Item 1A. Risk Factors

There have been no material changes from the risk factors set forth in Part I, Item 1A in our Annual Report.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

On October 1, 2021, our Board of Directors authorized a share repurchase program of up to $4 billion of our outstanding common stock, enabling us to opportunistically return value to shareholders. The $4 billion authorization is effective for four years, beginning on January 1, 2022 and expiring on December 31, 2025, and does not require the purchase of any minimum number of shares.

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