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Investment Securities | 6 Months Ended
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Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract] |
Investment Securities | Investment Securities White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities and other long-term investments, which are all classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Net realized and unrealized investment gains (losses) on trading securities are reported in pre-tax revenues. White Mountains’s fixed maturity investments are generally valued using industry standard pricing methodologies. Key inputs include benchmark yields, benchmark securities, reported trades, issuer spreads, bids, offers, credit ratings and prepayment speeds. Income on mortgage and asset-backed securities is recognized using an effective yield based on anticipated prepayments and the estimated economic life of the securities. When actual prepayments differ significantly from anticipated prepayments, the estimated economic life is recalculated and the remaining unamortized premium or discount is amortized prospectively over the remaining economic life. Realized investment gains (losses) resulting from sales of investment securities are accounted for using the specific identification method. Premiums and discounts on all fixed maturity investments are amortized or accreted to income over the anticipated life of the investment. Short-term investments consist of interest-bearing money market funds, certificates of deposit and other securities, which at the time of purchase, mature or become available for use within one year. Short-term investments are carried at amortized or accreted cost, which approximated fair value as of June 30, 2019 and December 31, 2018. Other long-term investments consist primarily of unconsolidated entities, Kudu’s investments (non-controlling equity interests in the form of revenue and earnings participations), insurance-linked securities (“ILS”) funds, private equity funds and hedge funds. Net Investment Income White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments and dividend income from its common equity securities and other long-term investments. The following table presents pre-tax net investment income for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
Millions |  | 2019 |  | 2018 |  | 2019 |  | 2018
Fixed maturity investments |  | $ | 8.3 |  |  | $ | 8.9 |  |  | $ | 16.4 |  |  | $ | 19.8 |
Short-term investments |  | 1.3 |  |  | 2.1 |  |  | 2.6 |  |  | 4.7 |
Common equity securities |  | 2.9 |  |  | 2.8 |  |  | 8.3 |  |  | 7.8 |
Other long-term investments |  | 8.8 |  |  | (1.4 | ) |  | 10.4 |  |  | .5 |
Total investment income |  | 21.3 |  |  | 12.4 |  |  | 37.7 |  |  | 32.8 |
Third-party investment expenses |  | (.3 | ) |  | (.6 | ) |  | (.7 | ) |  | (1.3 | )
Net investment income, pre-tax |  | $ | 21.0 |  |  | $ | 11.8 |  |  | $ | 37.0 |  |  | $ | 31.5 |
Net Realized and Unrealized Investment Gains (Losses) The following table presents net realized and unrealized investment gains (losses) for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
Millions |  | 2019 |  | 2018 |  | 2019 |  | 2018
Net realized investment gains (losses), pre-tax (1) |  | $ | 45.5 |  |  | $ | 1.4 |  |  | $ | 71.2 |  |  | $ | (3.7 | )
Net unrealized investment (losses) gains, pre-tax (2) |  | (10.3 | ) |  | 9.1 |  |  | 209.6 |  |  | (39.5 | )
Net realized and unrealized investment gains (losses), pre-tax |  | 35.2 |  |  | 10.5 |  |  | 280.8 |  |  | (43.2 | )
Income tax (expense) benefit attributable to net realized and unrealized investment gains (losses) |  | (4.1 | ) |  | (1.9 | ) |  | (56.3 | ) |  | 3.8 |
Net realized and unrealized investment gains (losses), after-tax |  | $ | 31.1 |  |  | $ | 8.6 |  |  | $ | 224.5 |  |  | $ | (39.4 | )
(1) The $67.5 of realized gain associated with the MediaAlpha Transaction is recorded in a separate line item in the statement of operations titled realized gain and unrealized investment gain from the MediaAlpha Transaction. See Note 2 — “Significant Transactions.” (2) Includes $114.7 of unrealized investment gain associated with the MediaAlpha Transaction, which is recorded in a separate line item in the statement of operations titled realized gain and unrealized investment gain from the MediaAlpha Transaction. See Note 2 — “Significant Transactions.” For the three and six months ended June 30, 2019 and 2018, all of White Mountains’s net realized and unrealized investment gains (losses) were recorded in the consolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income. Net Realized Investment Gains (Losses) The following tables present net realized investment gains (losses) for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended |  | Three Months Ended
|  | June 30, 2019 |  | June 30, 2018
Millions |  | Net Realized Gains |  | Net Foreign Exchange Gains (Losses) |  | Total Net Realized Gains Reflected in Earnings |  | Net Realized (Losses) Gains |  | Net Foreign Exchange Gains (Losses) |  | Total Net Realized (Losses) Gains Reflected in Earnings
Fixed maturity investments |  | $ | 3.0 |  |  | $ | — |  |  | $ | 3.0 |  |  | $ | (8.8 | ) |  | $ | — |  |  | $ | (8.8 | )
Short-term investments |  | .1 |  |  | — |  |  | .1 |  |  | (.7 | ) |  | — |  |  | (.7 | )
Common equity securities |  | 41.6 |  |  | — |  |  | 41.6 |  |  | 10.8 |  |  | — |  |  | 10.8 |
Other long-term investments |  | .8 |  |  | — |  |  | .8 |  |  | .1 |  |  | — |  |  | .1 |
Net realized investment gains, pre-tax |  | 45.5 |  |  | — |  |  | 45.5 |  |  | 1.4 |  |  | — |  |  | 1.4 |
Income tax (expense) benefit attributable to net realized investment gains (losses) |  | (7.1 | ) |  | — |  |  | (7.1 | ) |  | 9.4 |  |  | — |  |  | 9.4 |
Net realized investment gains, after-tax |  | $ | 38.4 |  |  | $ | — |  |  | $ | 38.4 |  |  | $ | 10.8 |  |  | $ | — |  |  | $ | 10.8 |
|  | Six Months Ended |  | Six Months Ended
|  | June 30, 2019 |  | June 30, 2018
Millions |  | Net Realized Gains |  | Net Foreign Exchange Gains (Losses) |  | Total Net Realized Gains Reflected in Earnings |  | Net Realized (Losses) Gains |  | Net Foreign Exchange Gains (Losses) |  | Total Net Realized (Losses) Gains Reflected in Earnings
Fixed maturity investments |  | $ | 2.1 |  |  | $ | — |  |  | $ | 2.1 |  |  | $ | (22.5 | ) |  | $ | 18.2 |  |  | $ | (4.3 | )
Short-term investments |  | .1 |  |  | — |  |  | .1 |  |  | (.8 | ) |  | — |  |  | (.8 | )
Common equity securities |  | 67.4 |  |  | — |  |  | 67.4 |  |  | 12.0 |  |  | — |  |  | 12.0 |
Other long-term investments |  | 1.6 |  |  | — |  |  | 1.6 |  |  | (3.4 | ) |  | (7.2 | ) |  | (10.6 | )
Net realized investment gains (losses), pre-tax |  | 71.2 |  |  | — |  |  | 71.2 |  |  | (14.7 | ) |  | 11.0 |  |  | (3.7 | )
Income tax (expense) benefit attributable to net realized investment gains (losses) |  | (8.8 | ) |  | — |  |  | (8.8 | ) |  | 8.9 |  |  | — |  |  | 8.9 |
Net realized investment gains (losses), after-tax |  | $ | 62.4 |  |  | $ | — |  |  | $ | 62.4 |  |  | $ | (5.8 | ) |  | $ | 11.0 |  |  | $ | 5.2 |
Net Unrealized Investment Gains (Losses) The following tables present net unrealized investment gains (losses) and changes in the carrying value of investments measured at fair value for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended |  | Three Months Ended
|  | June 30, 2019 |  | June 30, 2018
Millions |  | Net Unrealized Gains (Losses) |  | Net Foreign Exchange Gains |  | Total Net Unrealized Gains (Losses) Reflected in Earnings |  | Net Unrealized Gains |  | Net Foreign Exchange (Losses) |  | Total Net Unrealized Gains Reflected in Earnings
Fixed maturity investments |  | $ | 13.9 |  |  | $ | — |  |  | $ | 13.9 |  |  | $ | 1.4 |  |  | $ | — |  |  | $ | 1.4 |
Short-term investments |  | .2 |  |  | — |  |  | .2 |  |  | .7 |  |  | — |  |  | .7 |
Common equity securities |  | (13.8 | ) |  | — |  |  | (13.8 | ) |  | 5.5 |  |  | — |  |  | 5.5 |
Other long-term investments |  | (10.9 | ) |  | .3 |  |  | (10.6 | ) |  | 2.3 |  |  | (.8 | ) |  | 1.5 |
Net unrealized investment (losses) gains, pre-tax |  | (10.6 | ) |  | .3 |  |  | (10.3 | ) |  | 9.9 |  |  | (.8 | ) |  | 9.1 |
Income tax benefit (expense) attributable to net unrealized investment gains (losses) |  | 3.0 |  |  | — |  |  | 3.0 |  |  | (11.4 | ) |  | .1 |  |  | (11.3 | )
Net unrealized investment (losses) gains, after-tax |  | $ | (7.6 | ) |  | $ | .3 |  |  | $ | (7.3 | ) |  | $ | (1.5 | ) |  | $ | (.7 | ) |  | $ | (2.2 | )
|  | Six Months Ended |  | Six Months Ended
|  | June 30, 2019 |  | June 30, 2018
Millions |  | Net Unrealized Gains |  | Net Foreign Exchange Gains |  | Total Net Unrealized Gains Reflected in Earnings |  | Net Unrealized (Losses) Gains |  | Net Foreign Exchange (Losses) Gains |  | Total Net Unrealized (Losses) Gains Reflected in Earnings
Fixed maturity investments |  | $ | 35.9 |  |  | $ | — |  |  | $ | 35.9 |  |  | $ | (17.2 | ) |  | $ | (14.8 | ) |  | $ | (32.0 | )
Short-term investments |  | .2 |  |  | — |  |  | .2 |  |  | — |  |  | — |  |  | — |
Common equity securities |  | 71.7 |  |  | — |  |  | 71.7 |  |  | (11.2 | ) |  | — |  |  | (11.2 | )
Other long-term investments(1) |  | 101.8 |  |  | — |  |  | 101.8 |  |  | .4 |  |  | 3.3 |  |  | 3.7 |
Net unrealized investment gains (losses), pre-tax |  | 209.6 |  |  | — |  |  | 209.6 |  |  | (28.0 | ) |  | (11.5 | ) |  | (39.5 | )
Income tax expense attributable to net unrealized investment gains (losses) |  | (47.5 | ) |  | — |  |  | (47.5 | ) |  | (5.1 | ) |  | — |  |  | (5.1 | )
Net unrealized investment gains (losses), after-tax |  | $ | 162.1 |  |  | $ | — |  |  | $ | 162.1 |  |  | $ | (33.1 | ) |  | $ | (11.5 | ) |  | $ | (44.6 | )
(1) Includes $114.7 in unrealized investment gain associated with the MediaAlpha Transaction. See Note 2 — “Significant Transactions.” The following table presents total gains (losses) included in earnings attributable to net unrealized investment gains (losses) for Level 3 investments for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended | Six Months Ended
|  | June 30, | June 30,
Millions |  | 2019 |  | 2018 | 2019 |  | 2018
Other long-term investments |  | $ | (14.0 | ) |  | $ | 3.2 |  | $ | 100.0 |  |  | $ | (1.9 | )
Total net unrealized investment (losses) gains, pre-tax - Level 3 investments |  | $ | (14.0 | ) |  | $ | 3.2 |  | $ | 100.0 |  |  | $ | (1.9 | )
Investment Holdings The following tables present the cost or amortized cost, gross unrealized investment gains (losses) and carrying values of White Mountains’s fixed maturity investments as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019
Millions |  | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Carrying Value
U.S. Government and agency obligations |  | $ | 183.5 |  |  | $ | 1.4 |  |  | $ | (.1 | ) |  | $ | 184.8 |
Debt securities issued by corporations |  | 446.1 |  |  | 11.7 |  |  | — |  |  | 457.8 |
Municipal obligations |  | 286.3 |  |  | 11.2 |  |  | (.1 | ) |  | 297.4 |
Mortgage and asset-backed securities |  | 168.2 |  |  | 1.7 |  |  | (.5 | ) |  | 169.4 |
Total fixed maturity investments |  | $ | 1,084.1 |  |  | $ | 26.0 |  |  | $ | (.7 | ) |  | $ | 1,109.4 |
|  | December 31, 2018
Millions |  | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Carrying Value
U.S. Government and agency obligations |  | $ | 154.0 |  |  | $ | .1 |  |  | $ | (.9 | ) |  | $ | 153.2 |
Debt securities issued by corporations |  | 519.0 |  |  | 1.0 |  |  | (9.5 | ) |  | 510.5 |
Municipal obligations |  | 279.0 |  |  | 2.4 |  |  | (1.1 | ) |  | 280.3 |
Mortgage and asset-backed securities |  | 136.1 |  |  | .1 |  |  | (2.7 | ) |  | 133.5 |
Total fixed maturity investments |  | $ | 1,088.1 |  |  | $ | 3.6 |  |  | $ | (14.2 | ) |  | $ | 1,077.5 |
The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency losses, and carrying values of White Mountains’s common equity securities and other long-term investments as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019
Millions |  | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Foreign Currency Losses |  | Carrying Value
Common equity securities |  | $ | 616.6 |  |  | $ | 92.6 |  |  | $ | — |  |  | $ | — |  |  | $ | 709.2 |
Other long-term investments |  | $ | 561.9 |  |  | $ | 168.2 |  |  | $ | (63.7 | ) |  | $ | (2.0 | ) |  | $ | 664.4 |
|  | December 31, 2018
Millions |  | Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Foreign Currency Losses |  | Carrying Value
Common equity securities |  | $ | 904.7 |  |  | $ | 51.0 |  |  | $ | (30.1 | ) |  | $ | — |  |  | $ | 925.6 |
Other long-term investments |  | $ | 330.3 |  |  | $ | 52.2 |  |  | $ | (54.9 | ) |  | $ | (2.0 | ) |  | $ | 325.6 |
Other Long-Term Investments The following table presents the carrying values of White Mountains’s other long-term investments as of June 30, 2019 and December 31, 2018:
|  | Carrying Value at
Millions |  | June 30, 2019 |  | December 31, 2018
Kudu investments (1)(2) |  | $ | 142.2 |  |  | $ | — |
MediaAlpha (1)(3) |  | 114.7 |  |  | — |
PassportCard/DavidShield (1) |  | 75.0 |  |  | 75.0 |
Elementum (1) |  | 55.1 |  |  | — |
Other unconsolidated entities (1)(4) |  | 39.1 |  |  | 60.0 |
Kudu (5) |  | — |  |  | 30.7 |
Total unconsolidated entities (1) |  | 426.1 |  |  | 165.7 |
Private equity funds and hedge funds |  | 166.1 |  |  | 146.1 |
Insurance-linked securities funds |  | 40.3 |  |  | — |
Other |  | 31.9 |  |  | 13.8 |
Total other long-term investments |  | $ | 664.4 |  |  | $ | 325.6 |
(1) See Fair Value Measurements by Level table. (2) Includes Kudu’s non-controlling equity interests in the form of revenue and earnings participations. As of June 30, 2019 White Mountains’s consolidates Kudu. See Note 2 — “Significant Transactions”. (3) The MediaAlpha Transaction was completed on February 26, 2019. See Note 2 — “Significant Transactions”. (4) Includes White Mountains’s non-controlling interests in certain private common equity securities, limited liability companies and convertible preferred securities. (5) Includes White Mountains non-controlling interest in Kudu prior to consolidation. See Note 2 — “Significant Transactions”. Private Equity Funds and Hedge Funds White Mountains invests in private equity funds and hedge funds, which are included in other long-term investments. The fair value of these investments is generally estimated using the net asset value (“NAV”) of the funds. As of June 30, 2019, White Mountains held investments in thirteen private equity funds and one hedge fund. The largest investment in a single fund was $54.8 million as of June 30, 2019 and $54.3 million as of December 31, 2018. The following table presents investments and unfunded commitments in private equity funds and hedge funds by investment objective and sector as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019 |  | December 31, 2018
Millions |  | Fair Value |  | Unfunded Commitments |  | Fair Value |  | Unfunded Commitments
Private equity funds |  |  |  |  |  |  |  |  |  |  |  |
Manufacturing/Industrial |  | $ | 53.2 |  |  | $ | 4.1 |  |  | $ | 42.9 |  |  | $ | 10.5 |
Aerospace/Defense/Government |  | 32.4 |  |  | 26.9 |  |  | 27.6 |  |  | 34.9 |
Direct lending |  | 14.5 |  |  | 15.0 |  |  | 13.0 |  |  | 17.7 |
Financial services |  | 11.2 |  |  | 26.6 |  |  | 8.3 |  |  | 13.6 |
Total private equity funds |  | 111.3 |  |  | 72.6 |  |  | 91.8 |  |  | 76.7 |
Hedge funds |  |  |  |  |  |  |  |  |  |  |  |
Long/short banks and financials |  | 54.8 |  |  | — |  |  | 54.3 |  |  | — |
Total hedge funds |  | 54.8 |  |  | — |  |  | 54.3 |  |  | — |
Total private equity funds and hedge funds included in other long-term investments |  | $ | 166.1 |  |  | $ | 72.6 |  |  | $ | 146.1 |  |  | $ | 76.7 |
Investments in private equity funds are generally subject to a lock-up period during which investors may not request a redemption. Distributions prior to the expected termination date of the fund may be limited to dividends or proceeds arising from the liquidation of the fund’s underlying investments. In addition, certain private equity funds have the option to extend the lock-up period. The following table presents investments in private equity funds that were subject to lock-up periods as of June 30, 2019:
Millions |  | 1 – 3 years |  | 3 – 5 years |  | 5 – 10 years |  | >10 years |  | Total
Private equity funds — expected lock-up period remaining |  | $4.2 |  | $— |  | $81.4 |  | $25.7 |  | $111.3
Investors in private equity funds are generally subject to indemnification obligations outside of the capital commitment period and prior to the winding up of the fund. As of June 30, 2019 and December 31, 2018, White Mountains is not aware of any indemnification claims relating to its investments in private equity funds. Redemption of investments in most hedge funds is subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. As of June 30, 2019, White Mountains held one active hedge fund with a fair value of $54.8 million. The hedge fund is subject to a semi-annual restriction on redemptions and an advance notice period requirement of 45 days. Insurance-Linked Securities Funds White Mountains’s other long-term investments include insurance-linked securities (“ILS”) funds. The fair value of these investments are generally estimated using the NAV of the funds. As of June 30, 2019, White Mountains held investments in three ILS funds with a fair value of $40.3 million. Investments in ILS funds are generally subject to restrictions, including lock-up periods where no redemption or withdrawal are allowed, restrictions on redemption frequency and advance notice periods for redemptions. From time to time, natural catastrophe, liquidity, market or other events will occur that make the determination of fair value for underlying investments in an ILS fund less certain due to the potential for loss development. In such circumstances, the impacted investments may be subject to additional lock-up provisions. As of June 30, 2019, White Mountains holds one ILS fund subject to a lock-up period that expires on June 1, 2020. White Mountains’s ILS funds are subject to monthly and annual restrictions on redemptions and advance redemption notice period requirements that range between 30 and 90 days. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. Fair Value Measurements as of June 30, 2019 Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (“observable inputs”) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (“unobservable inputs”). Quoted prices in active markets for identical assets or liabilities have the highest priority (“Level 1”), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (“Level 2”) and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (“Level 3”). As of June 30, 2019 and December 31, 2018, White Mountains used quoted market prices or other observable inputs to determine fair value for approximately 75% and 87% of the investment portfolio. Fair Value Measurements by Level The following tables present White Mountains’s fair value measurements for investments as of June 30, 2019 and December 31, 2018 by level. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimal credit risk, while the credit and other risks associated with other issuers, such as corporations, foreign governments, municipalities or entities issuing mortgage and asset-backed securities vary depending on the nature of the issuing entity type. White Mountains further disaggregates debt securities issued by corporations and common equity securities by industry sector because investors often reference commonly used benchmarks and their subsectors to monitor risk and performance. Accordingly, White Mountains has further disaggregated these asset classes into subclasses based on the similar sectors and industry classifications it uses to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate and S&P 500 indices.
|  | June 30, 2019
Millions |  | Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Fixed maturity investments: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations |  | $ | 184.8 |  |  | $ | 184.8 |  |  | $ | — |  |  | $ | — |
Debt securities issued by corporations: |  |  |  |  |  |  |  |  |
Financials |  | 134.3 |  |  | — |  |  | 134.3 |  |  | — |
Healthcare |  | 60.9 |  |  | — |  |  | 60.9 |  |  | — |
Industrial |  | 55.5 |  |  | — |  |  | 55.5 |  |  | — |
Technology |  | 48.6 |  |  | — |  |  | 48.6 |  |  | — |
Energy |  | 48.4 |  |  | — |  |  | 48.4 |  |  | — |
Consumer |  | 48.0 |  |  | — |  |  | 48.0 |  |  | — |
Communications |  | 26.0 |  |  | — |  |  | 26.0 |  |  | — |
Utilities |  | 19.9 |  |  | — |  |  | 19.9 |  |  | — |
Materials |  | 16.2 |  |  | — |  |  | 16.2 |  |  | — |
Total debt securities issued by corporations |  | 457.8 |  |  | — |  |  | 457.8 |  |  | — |
Mortgage and asset-backed securities |  | 169.4 |  |  | — |  |  | 169.4 |  |  | — |
Municipal obligations |  | 297.4 |  |  | — |  |  | 297.4 |  |  | — |
Total fixed maturity investments |  | 1,109.4 |  |  | 184.8 |  |  | 924.6 |  |  | — |
Short-term investments (1) |  | 187.1 |  |  | 169.8 |  |  | 17.3 |  |  | — |
Common equity securities: |  |  |  |  |  |  |  |  |  |  |  |
Exchange traded funds (2) |  | 513.1 |  |  | 499.7 |  |  | 13.4 |  |  | — |
Other (3) |  | 196.1 |  |  | — |  |  | 196.1 |  |  | — |
Total common equity securities |  | 709.2 |  |  | 499.7 |  |  | 209.5 |  |  | — |
Other long-term investments |  | 458.0 |  |  | — |  |  | — |  |  | 458.0 |
Other long-term investments — NAV (4) |  | 206.4 |  |  | — |  |  | — |  |  | — |
Total investments |  | $ | 2,670.1 |  |  | $ | 854.3 |  |  | $ | 1,151.4 |  |  | $ | 458.0 |
(1) Short-term investments are measured at amortized cost, which approximates fair value. (2) ETFs traded on foreign exchanges are priced using the fund’s published NAV to account for the difference in market close times and are therefore designated a level 2 measurement. (3) Consists of two investments in unit trusts that primarily invest in international equities. (4) Consists of private equity funds, one hedge fund and ILS funds for which fair value is measured at NAV using the practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.
|  | December 31, 2018
Millions |  | Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Fixed maturity investments: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations |  | $ | 153.2 |  |  | $ | 153.2 |  |  | $ | — |  |  | $ | — |
Debt securities issued by corporations: |  |  |  |  |  |  |  |  |  |  |  |
Financials |  | 143.4 |  |  | — |  |  | 143.4 |  |  | — |
Consumer |  | 68.5 |  |  | — |  |  | 68.5 |  |  | — |
Technology |  | 60.5 |  |  | — |  |  | 60.5 |  |  | — |
Energy |  | 57.6 |  |  | — |  |  | 57.6 |  |  | — |
Healthcare |  | 55.0 |  |  | — |  |  | 55.0 |  |  | — |
Industrial |  | 47.6 |  |  | — |  |  | 47.6 |  |  | — |
Communications |  | 31.8 |  |  | — |  |  | 31.8 |  |  | — |
Materials |  | 26.3 |  |  | — |  |  | 26.3 |  |  | — |
Utilities |  | 19.8 |  |  | — |  |  | 19.8 |  |  | — |
Total debt securities issued by corporations |  | 510.5 |  |  | — |  |  | 510.5 |  |  | — |
Mortgage and asset-backed securities |  | 133.5 |  |  | — |  |  | 133.5 |  |  | — |
Municipal obligations |  | 280.3 |  |  | — |  |  | 280.3 |  |  | — |
Total fixed maturity investments |  | 1,077.5 |  |  | 153.2 |  |  | 924.3 |  |  | — |
Short-term investments (1) |  | 214.2 |  |  | 204.4 |  |  | 9.8 |  |  | — |
Common equity securities: |  |  |  |  |  |  |  |  |  |  |  |
Exchange traded funds (2) |  | 675.3 |  |  | 617.0 |  |  | 58.3 |  |  | — |
Healthcare |  | 14.0 |  |  | 14.0 |  |  | — |  |  | — |
Financials |  | 13.5 |  |  | 13.5 |  |  | — |  |  | — |
Communications |  | 12.7 |  |  | 12.7 |  |  | — |  |  | — |
Industrial |  | 11.4 |  |  | 11.4 |  |  | — |  |  | — |
Technology |  | 7.4 |  |  | 7.4 |  |  | — |  |  | — |
Consumer |  | 6.2 |  |  | 6.2 |  |  | — |  |  | — |
Energy |  | 4.1 |  |  | 4.1 |  |  | — |  |  | — |
Materials |  | 3.1 |  |  | 3.1 |  |  | — |  |  | — |
Other (3) |  | 177.9 |  |  | — |  |  | 177.9 |  |  | — |
Total common equity securities |  | 925.6 |  |  | 689.4 |  |  | 236.2 |  |  | — |
Other long-term investments |  | 138.7 |  |  | — |  |  | — |  |  | 138.7 |
Other long-term investments — NAV (4) |  | 186.9 |  |  | — |  |  | — |  |  | — |
Total investments |  | $ | 2,542.9 |  |  | $ | 1,047.0 |  |  | $ | 1,170.3 |  |  | $ | 138.7 |
(1) Short-term investments are measured at amortized cost, which approximates fair value. (2) ETFs traded on foreign exchanges are priced using the fund’s published NAV to account for the difference in market close times and are therefore designated a level 2 measurement. (3) Consists of two investments in unit trusts that primarily invest in international equities. (4) Consists of unconsolidated entities, private equity funds and one hedge fund for which fair value is measured at NAV using the practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy. Debt Securities Issued by Corporations The following table presents the ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of June 30, 2019 and December 31, 2018:
|  | Fair Value at
Millions |  | June 30, 2019 |  | December 31, 2018
AAA |  | $ | 9.8 |  |  | $ | 8.9 |
AA |  | 79.6 |  |  | 88.7 |
A |  | 281.3 |  |  | 270.5 |
BBB |  | 87.1 |  |  | 142.4 |
Debt securities issued by corporations (1) |  | $ | 457.8 |  |  | $ | 510.5 |
(1) | Credit ratings are based upon issuer credit ratings provided by Standard & Poor’s Financial Services LLC (“Standard & Poor’s”), or if unrated by Standard & Poor’s, long-term obligation ratings provided by Moody’s Investor Service, Inc.
Mortgage and Asset-backed Securities The following table presents the fair value of White Mountains’s mortgage and asset-backed securities as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019 |  | December 31, 2018
Millions |  | Fair Value |  | Level 2 |  | Level 3 |  | Fair Value |  | Level 2 |  | Level 3
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
FNMA |  | $ | 67.6 |  |  | $ | 67.6 |  |  | $ | — |  |  | $ | 53.6 |  |  | $ | 53.6 |  |  | $ | — |
FHLMC |  | 41.9 |  |  | 41.9 |  |  | — |  |  | 38.1 |  |  | 38.1 |  |  | $ | — |
GNMA |  | 35.8 |  |  | 35.8 |  |  | — |  |  | 23.7 |  |  | 23.7 |  |  | $ | — |
Total agency (1) |  | 145.3 |  |  | 145.3 |  |  | — |  |  | 115.4 |  |  | 115.4 |  |  | — |
Total mortgage-backed securities |  | 145.3 |  |  | 145.3 |  |  | — |  |  | 115.4 |  |  | 115.4 |  |  | — |
Other asset-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vehicle receivables |  | 12.3 |  |  | 12.3 |  |  | — |  |  | 9.2 |  |  | 9.2 |  |  | — |
Credit card receivables |  | 11.8 |  |  | 11.8 |  |  | — |  |  | 8.9 |  |  | 8.9 |  |  | — |
Total other asset-backed securities |  | 24.1 |  |  | 24.1 |  |  | — |  |  | 18.1 |  |  | 18.1 |  |  | — |
Total mortgage and asset-backed securities |  | $ | 169.4 |  |  | $ | 169.4 |  |  | $ | — |  |  | $ | 133.5 |  |  | $ | 133.5 |  |  | $ | — |
(1) | Represents publicly traded mortgage-backed securities which carry the full faith and credit guaranty of the U.S. Government (i.e., GNMA) or are guaranteed by a government sponsored entity (i.e., FNMA, FHLMC).
Rollforward of Fair Value Measurements by Level White Mountains uses quoted market prices where available as the inputs to estimate fair value for its investments in active markets. Such measurements are considered to be either Level 1 or Level 2 measurements, depending on whether the quoted market price inputs are for identical securities (Level 1) or similar securities (Level 2). Level 3 measurements for fixed maturity investments, common equity securities and other long-term investments as of June 30, 2019 and 2018 consist of securities for which the estimated fair value has not been determined based upon quoted market price inputs for identical or similar securities. The following tables present the changes in White Mountains’s fair value measurements by level for the three months ended June 30, 2019 and 2018:
|  |  | Level 3 Investments | Unconsolidated Entities, Private Equity Funds, Hedge Funds and ILS Funds Measured at NAV (3)(5) |  |  |
Millions | Level 1 Investments | Level 2 Investments | Other Long-term Investments(2) |  | Total |
Balance at December 31, 2018 | $ | 842.6 |  | $ | 1,160.5 |  | $ | 138.7 |  | $ | 186.9 |  |  | $ | 2,328.7 |  | (1)
Net realized and unrealized gains | 115.2 |  | 62.0 |  | 100.0 |  | 3.4 |  |  | 280.6 |  | (2,4)
Amortization/Accretion | .1 |  | (.7 | ) | — |  | — |  |  | (.6 | ) |
Purchases | 70.1 |  | 232.0 |  | 136.7 |  | 102.5 |  |  | 541.3 |  |
Sales | (343.5 | ) | (319.7 | ) | — |  | (3.8 | ) |  | (667.0 | ) |
Transfers in | — |  | — |  | 82.6 |  | — |  |  | 82.6 |  |
Transfers out | — |  | — |  | — |  | (82.6 | ) |  | (82.6 | ) |
Balance at June 30, 2019 | $ | 684.5 |  | $ | 1,134.1 |  | $ | 458.0 |  | $ | 206.4 |  |  | $ | 2,483.0 |  | (1)
(1) Excludes carrying value of $187.1 million and $214.2 as of June 30, 2019 and December 31, 2018 classified as short-term investments. (2) Includes $114.7 in unrealized investment gains associated with the MediaAlpha Transaction. See Note 2 — “Significant Transactions”. (3) Investments for which fair value is measured at NAV using the practical expedient are no longer classified within the fair value hierarchy. See Note 1 — “Basis of Presentation and Significant Accounting Policies”. (4) Excludes realized and unrealized losses associated with short-term investments of $0.2 for the six months ended June 30, 2019. (5) Transfer includes $71.7 associated with the Kudu Transaction. See Note 2 — “Significant Transactions”.
|  |  | Level 3 Investments | Unconsolidated Entities, Private Equity Funds, and Hedge Funds, Measured at NAV (3) |  |
Millions | Level 1 Investments | Level 2 Investments | Other Long-term Investments | Total |
Balance at December 31, 2017 | $ | 890.4 |  | $ | 2,105.4 |  | $ | 77.2 |  | $ | 135.3 |  | $ | 3,208.3 |  | (1)(2)
Net realized and unrealized gains (losses) | 3.3 |  | (34.6 | ) | (6.5 | ) | 2.9 |  | (34.9 | ) | (4)
Amortization/Accretion | .1 |  | (1.9 | ) | — |  | — |  | (1.8 | ) |
Purchases | 315.7 |  | 539.0 |  | 44.2 |  | 2.9 |  | 901.8 |  |
Sales | (444.2 | ) | (1,353.3 | ) | — |  | (.5 | ) | (1,798.0 | ) |
Transfers in | — |  | — |  | — |  | — |  | — |  |
Transfers out | — |  | — |  | — |  | — |  | — |  |
Balance at June 30, 2018 | $ | 765.3 |  | $ | 1,254.6 |  | $ | 114.9 |  | $ | 140.6 |  | $ | 2,275.4 |  | (1)
(1) Excludes carrying value of $321.7 and $176.1 as of June 30, 2018 and December 31, 2017 classified as short-term investments. (2) Excludes carrying value of $(3.7) as of December 31, 2017 associated with foreign currency forward contracts. (3) Investments for which fair value is measured at NAV using the practical expedient are no longer classified within the fair value hierarchy. See Note 1 — “Basis of Presentation and Significant Accounting Policies”. (4) Excludes realized and unrealized losses associated with foreign currency forward contracts, foreign currency on cash and open trades and short-term investments of $3.5, $4.2 and $0.6 for the six months ended June 30, 2018. Fair Value Measurements — Transfers Between Levels - Six-months ended June 30, 2019 and 2018 Transfers between levels are recorded using the fair value measurement as of the end of the quarterly period in which the event or change in circumstance giving rise to the transfer occurred. During the first six months of 2019 and 2018, there were no fixed maturity investments or other long-term investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements. During the first six months of 2019 and 2018, there were no fixed maturity investments or other long-term investments classified as Level 2 measurements in the prior period that were transferred to Level 3 measurements. Significant Unobservable Inputs The following tables present significant unobservable inputs used in estimating the fair value of other long-term investments, other than private equity funds, hedge funds and ILS funds classified within Level 3 as of June 30, 2019 and December 31, 2018. The fair value of investments in certain unconsolidated entities, private equity funds, hedge funds and ILS funds are generally estimated using the NAV of the funds.
$ in Millions, Except Share Price |  | June 30, 2019
Description |  | Valuation Technique(s) |  | Fair Value (1) |  | Unobservable Input
Kudu investments |  | Discounted cash flow |  | $142.2 |  | Discount rate range | - | 15.3% to 19.6%
|  |  |  |  |  | Revenue exit multiple range | - | 6.6 to 12.2
MediaAlpha |  | Price of recent transaction(2) |  | $114.7 |  | Unit price | - | $208.98
PassportCard/DavidShield |  | Discounted cash flow |  | $75.0 |  | Discount rate | - | 18.0%
|  |  |  |  |  | Revenue exit multiple | - | 1.00
Elementum Holdings, L.P. |  | Price of recent transaction(2) |  | $55.1 |  | Transaction price | - | $55.1
Private debt instruments |  | Discounted cash flow |  | $21.7 |  | Discount rate range | - | 6.56% to 8.71%
YOUSURE Tarifvergleich GmbH (“durchblicker”) |  | Discounted cash flow |  | $15.5 |  | Discount rate | - | 23.0%
|  |  |  |  |  | Revenue exit multiple | - | 2.25
Vidado (f.k.a. Captricity, Inc.) |  | Discounted cash flow |  | $14.5 |  | Discount rate | - | 23.0%
|  |  |  |  |  | Revenue exit multiple | - | 3.75
Galvanic Applied Sciences |  | Multiple of EBITDA |  | $2.2 |  | EBITDA multiple | - | 6.0
Compare.com |  | Estimated net realizable value |  | $1.9 |  | Discount to book value | - | 94%
(1) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs. (2) The MediaAlpha Transaction was completed on February 26, 2019. The Elementum Transaction was completed on May 31, 2019. See Note 2 — “Significant Transactions”.
$ in Millions, Except Share Price |  | December 31, 2018
Description |  | Valuation Technique(s) |  | Fair Value (1) |  | Unobservable Input
PassportCard/DavidShield |  | Discounted cash flow |  | $75.0 |  | Discount rate | - | 18.0%
|  |  |  |  |  | Revenue exit multiple | - | 1.00
Compare.com |  | Discounted cash flow |  | $16.9 |  | Discount rate | - | 22.0%
|  |  |  |  |  | Revenue exit multiple | - | 2.75
durchblicker |  | Discounted cash flow |  | $15.5 |  | Discount rate | - | 23.0%
|  |  |  |  |  | Revenue exit multiple | - | 2.25
Vidado (f.k.a. Captricity, Inc.) |  | Discounted cash flow |  | $14.5 |  | Discount rate | - | 23.0%
Private debt instrument |  | Discounted cash flow |  | $10.0 |  | Discount rate | - | 9.23%
|  |  |  |  |  | Revenue exit multiple | - | 3.75
Galvanic Applied Sciences |  | Multiple of EBITDA |  | $3.1 |  | EBITDA multiple | - | 6.0
(1) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.

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