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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities |  |  |
Net income | $ 2,523.3 | $ 2,248.9 | $ 1,768.7
Adjustments to reconcile net income to net cash provided by operating activities |  |  |
Depreciation, amortization and impairment of property and equipment | 189.6 | 190.8 | 159.5
Stock-based compensation expense | 246.2 | 206.6 | 197.1
Net gains recognized on other investments | (189.6) | (176.3) | (50.5)
Net investments in T. Rowe Price investment products used to economically hedge supplemental savings plan liability | (142.9) | (126.0) | (129.5)
Net change in securities held by consolidated T. Rowe Price investment products | (798.8) | (930.9) | (437.0)
Other changes in assets and liabilities | 91.1 | 109.6 | 111.6
Net cash provided by operating activities | 1,918.9 | 1,522.7 | 1,619.9
Cash flows from investing activities |  |  |
Purchases of T. Rowe Price investment products | (272.4) | (239.7) | (1,124.0)
Dispositions of T. Rowe Price investment products | 454.1 | 131.4 | 352.4
Net cash of T. Rowe Price investment products on consolidation (deconsolidation) | (53.9) | (18.4) | (23.8)
Additions to property and equipment | (214.6) | (204.6) | (168.5)
Other investing activity | 50.5 | 6.8 | 88.4
Net cash provided by (used in) investing activities | (36.3) | (324.5) | (875.5)
Cash flows from financing activities |  |  |
Repurchases of common stock | (1,201.9) | (705.8) | (1,090.4)
Common share issuances under stock-based compensation plans | 3.9 | 83.3 | 74.8
Dividends paid to common stock and equity-award holders | (845.8) | (733.9) | (694.3)
Net subscriptions received from redeemable non-controlling interest holders | 557.5 | 523.7 | 470.4
Net cash provided by (used in) financing activities | (1,486.3) | (832.7) | (1,239.5)
Effect of exchange rate changes on cash and cash equivalents of consolidated T. Rowe Price investment products | 1.9 | (2.5) | (15.4)
Net change in cash and cash equivalents during period | 398.2 | 363.0 | (510.5)
Cash and cash equivalents at beginning of year | 1,858.3 | 1,495.3 | 2,005.8
Cash and cash equivalents at end of year | $ 2,256.5 | $ 1,858.3 | $ 1,495.3

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