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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Cash flows from operating activities |  |
Net income | $ 1,593.7 | $ 1,655.0
Adjustments to reconcile net income to net cash provided by operating activities |  |
Depreciation and amortization of property and equipment | 144.0 | 131.7
Stock-based compensation expense | 164.5 | 136.1
Net gains recognized on investments | (75.3) | (137.3)
Net investments in T. Rowe Price investment products used to economically hedge supplemental savings plan liability | (19.1) | (20.5)
Net change in securities held by consolidated T. Rowe Price investment products | (350.8) | (688.1)
Other changes in assets and liabilities | 459.9 | 423.8
Net cash provided by operating activities | 1,916.9 | 1,500.7
Cash flows from investing activities |  |
Purchases of T. Rowe Price investment products | (240.3) | (35.0)
Dispositions of T. Rowe Price investment products | 381.9 | 112.0
Net cash of T. Rowe Price investment products on deconsolidation | (49.1) | (8.3)
Additions to property and equipment | (155.4) | (148.9)
Other investing activity | 9.8 | 3.5
Net cash used in investing activities | (53.1) | (76.7)
Cash flows from financing activities |  |
Repurchases of common stock | (1,158.5) | (576.0)
Common share issuances under stock-based compensation plans | 76.2 | 116.3
Dividends paid to common stockholders of T. Rowe Price Group | (635.7) | (550.4)
Net subscriptions received from redeemable non-controlling interest holders | 298.7 | 387.1
Net cash used in financing activities | (1,419.3) | (623.0)
Effect of exchange rate changes on cash and cash equivalents of consolidated T. Rowe Price investment products | 3.4 | (2.2)
Net change in cash and cash equivalents during period | 447.9 | 798.8
Cash and cash equivalents at beginning of period | 1,858.3 | 1,495.3
Cash and cash equivalents at ending of period | $ 2,306.2 | $ 2,294.1

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