Total stockholder dividends paid by Principal Life to its parent for the nine months ended September 30, 2021, were $900.0 million, $600.0 million of which was extraordinary and approved by the Commissioner. As of September 30, 2021, we had $2,466.2 million of cash and liquid assets held in our holding companies and other subsidiaries, which is available for corporate purposes. This includes assets in excess of targeted statutory capital ratios and immediate working capital needs. Corporate balances held in foreign holding companies meet the indefinite reinvestment exception.
Operations. Our primary consolidated cash flow sources are premiums from insurance products, pension and annuity deposits, asset management fee revenues, administrative services fee revenues, income from investments and proceeds from the sales or maturity of investments. Cash outflows consist primarily of payment of benefits to policyholders and beneficiaries, income and other taxes, current operating expenses, payment of dividends to policyholders, payments in connection with investments acquired, payments made to acquire subsidiaries, payments relating to policy and contract surrenders, withdrawals, policy loans, interest payments and repayment of short-term debt and long-term debt. Our investment strategies are generally intended to provide adequate funds to pay benefits without forced sales of investments. For a discussion of our investment objectives and strategies, see “Investments.”
Cash Flows. Cash flow activity, as reported in our consolidated statements of cash flows, provides relevant information regarding our sources and uses of cash. The following discussion of our operating, investing and financing portions of the cash flows excludes cash flows attributable to the separate accounts.
Net cash provided by operating activities was $2,107.0 million and $3,110.4 million for the nine months ended September 30, 2021 and 2020, respectively. Our insurance business typically generates positive cash flows from operating activities, as premiums collected from our insurance products and income received from our investments exceed acquisition costs, benefits paid, redemptions and operating expenses. These positive cash flows are then invested to support the obligations of our insurance and investment products and required capital supporting these products. Our cash flows from operating activities are affected by the timing of premiums, fees and investment income received and benefits and expenses paid. The decrease in cash provided by operating activities was primarily due to fluctuations in receivables and payables associated with the timing of settlements in 2021 as compared to 2020. Additionally, increases in net income were offset in part by proceeds from real estate sold in 2020 with no corresponding activity in 2021.
Net cash used in investing activities was $2,867.3 million and $3,639.9 million for the nine months ended September 30, 2021 and 2020, respectively. The decrease in cash used in investing activities was primarily due to lower net purchases of available-for-sale securities in 2021 as compared to 2020. The decrease was offset in part by increased net purchases of mortgage loans and lower Chile direct financing lease maturities in in 2021 as compared to 2020.
Net cash provided by financing activities was $1,055.9 million and $1,570.3 million for the nine months ended September 30, 2021 and 2020, respectively. The decrease in cash provided by financing activities was due to proceeds from long-term debt issued in 2020 with no corresponding activity in 2021 and lower net investment contract deposits in 2021 as compared to 2020. These decreases were partially offset by increased banking operation deposits due to a new bank sweep product launched in the third quarter of 2021 associated with the Acquired Business.
Shelf Registration. Under our current shelf registration, we have the ability to issue, in unlimited amounts, unsecured senior debt securities or subordinated debt securities, junior subordinated debt, preferred stock, common stock, warrants, depositary shares, purchase contracts and purchase units of PFG. Our wholly owned subsidiary, PFS, may guarantee, fully and unconditionally or otherwise, our obligations with respect to any non-convertible securities, other than common stock, described in the shelf registration.
Guarantors and Issuers of Guaranteed Securities. PFG has issued certain notes pursuant to transactions registered under the Securities Act of 1933. Such notes include all currently outstanding senior notes and junior subordinated notes, which are subordinated to all our senior debt (collectively, the “registered notes”). For additional information on the senior notes and junior subordinated notes, see Item 8. “Financial Statements and Supplementary Data, Notes to Consolidated Financial Statements, Note 9, Debt” in our Annual Report on Form 10-K for the year ended December 31, 2020.
PFS, a wholly owned subsidiary of PFG, has guaranteed each of the registered notes on a full and unconditional basis. The full and unconditional guarantees require PFS to satisfy the obligations of the guaranteed security immediately, if and when PFG has failed to make a scheduled payment thereunder. If PFS does not make such payment, any holder of the guaranteed security may immediately bring suit directly against PFS for payment of amounts due and payable. No other subsidiary of PFG has guaranteed any of the registered notes.