potential uses of cash internationally to determine the appropriate level of dividend repatriations of our foreign source income.
Cash and Investment Securities
As of September 30, 2021 and December 31, 2020, we had Cash and cash equivalents of $1,046.4 million, which included $43.0 million related to Business Solutions, and $1,428.2 million, respectively. As described in Part I, Item 1, Financial Statements, Note 4, Assets Held for Sale and Investment Activities, we have agreed to sell our Business Solutions business. We expect that our use of the net proceeds on the sale, after taxes on the gain from the transaction, will be consistent with our objective to maintain strong liquidity and a capital structure consistent with investment-grade credit ratings, as further described below. In many cases, we receive funds from money transfers and certain other payment services before we settle the payment of those transactions. These funds, referred to as Settlement assets on our Condensed Consolidated Balance Sheets, are not used to support our operations. However, we earn income from investing these funds. We maintain a portion of these settlement assets in highly liquid investments, classified as Cash and cash equivalents within Settlement assets, to fund settlement obligations.
Investment securities, classified within Settlement assets on the Condensed Consolidated Balance Sheets, were $1,437.9 million and $1,990.6 million as of September 30, 2021 and December 31, 2020, respectively, and consist primarily of highly-rated state and municipal debt securities, including fixed-rate term notes and variable-rate demand notes. The substantial majority of our investment securities are held in order to comply with state licensing requirements in the United States and are required to have credit ratings of "A-" or better from a major credit rating agency.
Investment securities are exposed to market risk due to changes in interest rates and credit risk. We regularly monitor credit risk and attempt to mitigate our exposure by investing in highly-rated securities and diversifying our investment portfolio. Our investment securities are also actively managed with respect to concentration. As of September 30, 2021, all investments with a single issuer and each individual security represented less than 10% of our investment securities portfolio.
Cash Flows from Operating Activities
Cash provided by operating activities increased to $686.0 million during the nine months ended September 30, 2021, from $585.6 million in the corresponding period in the prior year. Cash provided by operating activities can be impacted by changes to our consolidated net income, in addition to fluctuations in our working capital balances, among other factors.
Financing Resources
On March 9, 2021, we issued $600.0 million and $300.0 million of aggregate principal amount of 1.350% and 2.750% unsecured notes due March 15, 2026 (“2026 Notes”) and March 15, 2031 (“2031 Notes”), respectively. Interest with respect to these notes is payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2021. If a change of control triggering event occurs, holders of the 2026 Notes and 2031 Notes may require us to repurchase some or all of their notes at a price equal to 101% of the principal amount of their notes, plus any accrued and unpaid interest. We may redeem the 2026 Notes and the 2031 Notes, in whole or in part, at any time prior to February 15, 2026 and December 15, 2030, respectively, at the greater of par or a price based on the applicable treasury rate plus 15 and 25 basis points, respectively. We may redeem the 2026 Notes and the 2031 Notes at any time after February 15, 2026 and December 15, 2030, respectively, at a price equal to par, plus accrued interest.
Proceeds from the 2026 Notes and 2031 Notes and cash, including cash generated from operations, were used to repay $650.0 million of the term loan facility in the first quarter of 2021 and $500.0 million of the aggregate principal amount of 3.600% unsecured notes due in March 2022 (“2022 Notes”) in the second quarter of 2021.
As of September 30, 2021, we have outstanding borrowings at par value of $2,870.0 million. The significant majority of these outstanding borrowings consist of unsecured fixed-rate notes with maturities ranging from 2023 to 2040. Our borrowings also include our floating rate term loan.