Biggest changeTreasury and TBA Current Future Statement Securities Gain (Loss) Period Periods (GAAP) (Short Positions) (Long Positions) (Non-GAAP) (Non-GAAP) Three Months Ended December 31, 2022 $ (10,657 ) $ (9,700 ) $ - $ 11,076 $ (12,033 ) September 30, 2022 184,819 10,642 106 5,043 169,028 June 30, 2022 103,758 1,013 1,067 1,996 99,682 March 31, 2022 177,816 2,539 27 (1,287 ) 176,537 December 31, 2021 10,945 2,568 - (7,949 ) 16,326 September 30, 2021 5,375 (2,306 ) - (1,248 ) 8,929 June 30, 2021 (34,915 ) (5,963 ) - (5,104 ) (23,848 ) March 31, 2021 45,472 9,133 (8,559 ) (4,044 ) 48,942 December 31, 2020 8,538 (436 ) 5,480 (5,790 ) 9,284 September 30, 2020 4,079 131 3,336 (6,900 ) 7,512 June 30, 2020 (8,851 ) 582 1,133 (5,751 ) (4,815 ) March 31, 2020 (82,858 ) (7,090 ) - (4,900 ) (70,868 ) Years Ended December 31, 2022 $ 455,736 $ 4,494 $ 1,200 $ 16,828 $ 433,214 December 31, 2021 26,877 3,432 (8,559 ) (18,345 ) 50,349 December 31, 2020 (79,092 ) (6,813 ) 9,949 (23,341 ) (58,887 ) Economic Interest Expense and Economic Net Interest Income (in thousands) Interest Expense on Borrowings Gains (Losses) on Derivative Instruments Net Interest Income GAAP Attributed Economic GAAP Economic Interest Interest to Current Interest Net Interest Net Interest Income Expense Period(1) Expense(2) Income Income(3) Three Months Ended December 31, 2022 $ 31,897 $ 29,512 $ 11,076 $ 18,436 $ 2,385 $ 13,461 September 30, 2022 35,611 21,361 5,043 16,318 14,250 19,293 June 30, 2022 35,268 8,180 1,996 6,184 27,088 29,084 March 31, 2022 41,857 2,655 (1,287 ) 3,942 39,202 37,915 December 31, 2021 44,421 2,023 (7,949 ) 9,972 42,398 34,449 September 30, 2021 34,169 1,570 (1,248 ) 2,818 32,599 31,351 June 30, 2021 29,254 1,556 (5,104 ) 6,660 27,698 22,594 March 31, 2021 26,856 1,941 (4,044 ) 5,985 24,915 20,871 December 31, 2020 25,893 2,011 (5,790 ) 7,801 23,882 18,092 September 30, 2020 27,223 2,043 (6,900 ) 8,943 25,180 18,280 June 30, 2020 27,258 4,479 (5,751 ) 10,230 22,779 17,028 March 31, 2020 35,671 16,523 (4,900 ) 21,423 19,148 14,248 Years Ended December 31, 2022 $ 144,633 $ 61,708 $ 16,828 $ 44,880 $ 82,925 $ 99,753 December 31, 2021 134,700 7,090 (18,345 ) 25,435 127,610 109,265 December 31, 2020 116,045 25,056 (23,341 ) 48,397 90,989 67,648 (1) Reflects the effect of derivative instrument hedges for only the period presented.
Biggest changeGains (Losses) on Derivative Instruments - Reclassification of Derivative Transaction Expenses (in thousands) Recognized in Income Statement Attributed to Current Period Prior Reclassified Current Prior Reclassified Current Presentation Expenses Presentation Presentation Expenses Presentation Three Months Ended December 31, 2022 $ (10,657 ) $ 1,662 $ (12,319 ) $ 11,076 $ 1,662 $ 9,414 September 30, 2022 184,819 889 183,930 5,043 889 4,154 June 30, 2022 103,758 391 103,367 1,996 391 1,605 March 31, 2022 177,816 318 177,498 (1,287 ) 318 (1,605 ) December 31, 2021 10,945 112 10,833 (7,949 ) 112 (8,061 ) September 30, 2021 5,375 70 5,305 (1,248 ) 70 (1,318 ) June 30, 2021 (34,915 ) 82 (34,997 ) (5,104 ) 82 (5,186 ) March 31, 2021 45,472 121 45,351 (4,044 ) 121 (4,165 ) Economic Interest Expense and Economic Net Interest Income (in thousands) Interest Expense on Borrowings Gains (Losses) on Derivative Instruments Net Interest Income GAAP Attributed Economic GAAP Economic Interest Interest to Current Interest Net Interest Net Interest Income Expense Period (1) Expense (2) Income Income (3) Three Months Ended December 31, 2023 $ 49,539 $ 52,325 $ 25,161 $ 27,164 $ (2,786 ) $ 22,375 September 30, 2023 50,107 58,705 24,440 34,265 (8,598 ) 15,842 June 30, 2023 39,911 48,671 23,482 25,189 (8,760 ) 14,722 March 31, 2023 38,012 42,217 19,211 23,006 (4,205 ) 15,006 December 31, 2022 31,897 29,512 9,414 20,098 2,385 11,799 September 30, 2022 35,611 21,361 4,154 17,207 14,250 18,404 June 30, 2022 35,268 8,180 1,605 6,575 27,088 28,693 March 31, 2022 41,857 2,655 (1,605 ) 4,260 39,202 37,597 December 31, 2021 44,421 2,023 (8,061 ) 10,084 42,398 34,337 September 30, 2021 34,169 1,570 (1,318 ) 2,888 32,599 31,281 June 30, 2021 29,254 1,556 (5,186 ) 6,742 27,698 22,512 March 31, 2021 26,856 1,941 (4,165 ) 6,106 24,915 20,750 Years Ended December 31, 2023 $ 177,569 $ 201,918 $ 92,294 $ 109,624 $ (24,349 ) $ 67,945 December 31, 2022 144,633 61,708 13,568 48,140 82,925 96,493 December 31, 2021 134,700 7,090 (18,730 ) 25,820 127,610 108,880 (1) Reflects the effect of derivative instrument hedges for only the period presented.
The tables below provide information on our portfolio average balances, interest income, yield on assets, average borrowings, interest expense, cost of funds, net interest income and net interest spread for each quarter in 2022, 2021 and 2020 and for the years ended December 31, 2022, 2021 and 2020 on both a GAAP and economic basis.
The tables below provide information on our portfolio average balances, interest income, yield on assets, average borrowings, interest expense, cost of funds, net interest income and net interest spread for each quarter in 2023, 2022 and 2021 and for the years ended December 31, 2023, 2022 and 2021 on both a GAAP and economic basis.
On August 4, 2020, we entered into an equity distribution agreement (the “August 2020 Equity Distribution Agreement”) with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $150,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
Capital Raising Activities On August 4, 2020, we entered into an equity distribution agreement (the “August 2020 Equity Distribution Agreement”) with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $150,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
We issued a total of 5,498,730 shares under the August 2020 Equity Distribution Agreement for aggregate gross proceeds of approximately $150.0 million, and net proceeds of approximately $147.4 million, after commissions and fees, prior to its termination in June 2021. 42 On January 20, 2021, we entered into an underwriting agreement (the “January 2021 Underwriting Agreement”) with J.P.
We issued a total of 5,498,730 shares under the August 2020 Equity Distribution Agreement for aggregate gross proceeds of approximately $150.0 million, and net proceeds of approximately $147.4 million, after commissions and fees, prior to its termination in June 2021. 43 Table of Contents On January 20, 2021, we entered into an underwriting agreement (the “January 2021 Underwriting Agreement”) with J.P.
Coupled with the 156,751 shares remaining from the original 400,000 share authorization, the increased authorization brought the total authorization to 1,061,316 shares, representing 10% of the then outstanding share count.
Coupled with the 156,751 shares remaining from the original 400,000 share authorization, the increased authorization brought the total authorization to 1,061,315 shares, representing 10% of the then outstanding share count.
On October 29, 2021, we entered into an equity distribution agreement (the “October 2021 Equity Distribution Agreement”) with four sales agents pursuant to which we may offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that are deemed to be “at the market” offerings and privately negotiated transactions.
On October 29, 2021, we entered into an equity distribution agreement (the “October 2021 Equity Distribution Agreement”) with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
On October 29, 2021, we entered into the October 2021 Equity Distribution Agreement with four sales agents pursuant to which we may offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that are deemed to be “at the market” offerings and privately negotiated transactions.
On October 29, 2021, we entered into an equity distribution agreement (the “October 2021 Equity Distribution Agreement”) with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
We were formed by Bimini in August 2010, commenced operations on November 24, 2010 and completed our initial public offering (“IPO”) on February 20, 2013. We are externally managed by Bimini Advisors, an investment adviser registered with the Securities and Exchange Commission (the “SEC”).
We were formed by Bimini Capital Management, Inc. ("Bimini") in August 2010, commenced operations on November 24, 2010 and completed our initial public offering (“IPO”) on February 20, 2013. We are externally managed by Bimini Advisors, LLC ("Bimini Advisors," or our "Manager"), an investment adviser registered with the Securities and Exchange Commission (the “SEC”).
On June 14, 2022, the Enterprises announced that they would each charge a 50 bps fee for commingled securities issued on or after July 1, 2022 to cover the additional capital required for such securities under the Enterprise capital framework, which was subsequently reduced on January 19, 2023 to 9.375 bps for commingled securities issued on or after April 1, 2023 to address industry concern that the fee posed a risk to the fungibility of the Uniform Mortgage-Backed Security (“UMBS”) and negatively impacted liquidity and pricing in the market for TBA securities. 60 In 2017, policymakers announced that LIBOR will be replaced by December 31, 2021.
On June 14, 2022, the Enterprises announced that they would each charge a 50 bps fee for commingled securities issued on or after July 1, 2022 to cover the additional capital required for such securities under the Enterprise capital framework, which was subsequently reduced on January 19, 2023 to 9.375 bps for commingled securities issued on or after April 1, 2023 to address industry concern that the fee posed a risk to the fungibility of the Uniform Mortgage-Backed Security (“UMBS”) and negatively impacted liquidity and pricing in the market for TBA securities.
As described more fully below, we may also access liquidity by selling our equity or debt securities in public offerings or private placements. 57 Stockholders ’ Equity On January 23, 2020, we entered into the January 2020 Equity Distribution Agreement with three sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $200,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
As described more fully below, we may also access liquidity by selling our equity or debt securities in public offerings or private placements. 60 Table of Contents Stockholders ’ Equity On August 4, 2020, we entered into the August 2020 Equity Distribution Agreement with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $150,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
The tables below present a reconciliation of the adjustments to interest expense shown for each period relative to our derivative instruments, and the income statement line item, gains (losses) on derivative instruments, calculated in accordance with GAAP for the years ended December 31, 2022, 2021 and 2020 and each quarter during 2022, 2021 and 2020. 46 Gains (Losses) on Derivative Instruments (in thousands) Economic Hedges Recognized in Attributed to Attributed to Income U.S.
The tables below present a reconciliation of the adjustments to interest expense shown for each period relative to our derivative instruments, and the income statement line item, gains (losses) on derivative instruments, calculated in accordance with GAAP for the years ended December 31, 2023, 2022 and 2021 and each quarter during 2023, 2022 and 2021.
(in thousands, except per share amounts) Year Per Share Amount Total 2013 $ 6.975 $ 4,662 2014 10.800 22,643 2015 9.600 38,748 2016 8.400 41,388 2017 8.400 70,717 2018 5.350 55,814 2019 4.800 54,421 2020 3.950 53,570 2021 3.900 97,601 2022 2.475 87,906 2023 YTD (1) 0.320 12,540 Totals $ 64.970 $ 540,010 (1) On January 11, 2023, the Company declared a dividend of $0.16 per share that was paid on February 24, 2023.
(in thousands, except per share amounts) Year Per Share Amount Total 2013 $ 6.975 $ 4,662 2014 10.800 22,643 2015 9.600 38,748 2016 8.400 41,388 2017 8.400 70,717 2018 5.350 55,814 2019 4.800 54,421 2020 3.950 53,570 2021 3.900 97,601 2022 2.475 87,906 2023 1.800 81,127 2024 YTD (1) 0.240 12,362 Totals $ 66.690 $ 620,959 (1) On January 10, 2024, the Company declared a dividend of $0.12 per share to be paid on February 27, 2024.
There was a 63 bps decrease in the average cost of funds and an $1,510.5 million increase in average outstanding borrowings during the year ended December 31, 2021 as compared to the year ended December 31, 2020. Our economic interest expense was $44.9 million, $25.4 million and $48.4 million for the years ended December 31, 2022, 2021 and 2020, respectively.
There was a 138 bps increase in the average cost of funds and an $665.5 million decrease in average outstanding borrowings during the year ended December 31, 2022 as compared to the year ended December 31, 2021. Our economic interest expense was $109.6 million, $48.1 million and $25.8 million for the years ended December 31, 2023, 2022 and 2021, respectively.
Treasury Fixed-Rate Fixed-Rate Average Rate(1) Rate(1) Mortgage Rate(2) Mortgage Rate(2) SOFR(3) December 31, 2022 4.00 % 3.88 % 5.68 % 6.42 % 3.62 % September 30, 2022 4.04 % 3.80 % 5.96 % 6.70 % 2.13 % June 30, 2022 3.00 % 2.97 % 4.83 % 5.70 % 0.70 % March 31, 2022 2.42 % 2.33 % 3.83 % 4.67 % 0.09 % December 31, 2021 1.26 % 1.51 % 2.33 % 3.11 % 0.05 % September 30, 2021 1.00 % 1.53 % 2.28 % 3.01 % 0.05 % June 30, 2021 0.87 % 1.44 % 2.34 % 3.02 % 0.02 % March 31, 2021 0.94 % 1.75 % 2.45 % 3.17 % 0.04 % December 31, 2020 0.36 % 0.92 % 2.17 % 2.67 % 0.09 % September 30, 2020 0.27 % 0.68 % 2.40 % 2.90 % 0.09 % June 30, 2020 0.29 % 0.65 % 2.59 % 3.13 % 0.05 % March 31, 2020 0.38 % 0.70 % 2.92 % 3.50 % 1.26 % (1) Historical 5 and 10 Year U.S.
U.S Fixed-Rate Fixed-Rate 90 Day Treasury Treasury Mortgage Mortgage Average Rate (1) Rate (1) Rate (2) Rate (2) SOFR (3) December 31, 2023 3.84 % 3.87 % 5.93 % 6.61 % 5.36 % September 30, 2023 4.61 % 4.57 % 6.72 % 7.31 % 5.27 % June 30, 2023 4.13 % 3.82 % 6.06 % 6.71 % 5.00 % March 31, 2023 3.61 % 3.49 % 5.56 % 6.32 % 4.51 % December 31, 2022 4.00 % 3.88 % 5.68 % 6.42 % 3.62 % September 30, 2022 4.04 % 3.80 % 5.96 % 6.70 % 2.13 % June 30, 2022 3.00 % 2.97 % 4.83 % 5.70 % 0.70 % March 31, 2022 2.42 % 2.33 % 3.83 % 4.67 % 0.09 % December 31, 2021 1.26 % 1.51 % 2.33 % 3.11 % 0.05 % September 30, 2021 1.00 % 1.53 % 2.28 % 3.01 % 0.05 % June 30, 2021 0.87 % 1.44 % 2.34 % 3.02 % 0.02 % March 31, 2021 0.94 % 1.75 % 2.45 % 3.17 % 0.04 % (1) Historical 5 and 10 Year U.S.
The average term to maturity of the outstanding repurchase agreements was 27 days and 27 days at December 31, 2022 and 2021, respectively. 50 The tables below present the average balance of borrowings outstanding, interest expense and average cost of funds, and one-month average and six-month average SOFR rates for each quarter in 2022, 2021 and 2020 and for the years ended December 31, 2022, 2021 and 2020 on both a GAAP and economic basis.
The tables below present the average balance of borrowings outstanding, interest expense and average cost of funds, and one-month average and six-month average SOFR rates for each quarter in 2023, 2022 and 2021 and for the years ended December 31, 2023, 2022 and 2021 on both a GAAP and economic basis.
Our investment strategy focuses on, and our portfolio consists of, two categories of Agency RMBS: (i) traditional pass-through Agency RMBS, such as mortgage pass-through certificates issued by the GSEs and collateralized mortgage obligations (“CMOs”) issued by the GSEs (“PT RMBS”) and (ii) structured Agency RMBS, such as interest-only securities (“IOs”), inverse interest-only securities (“IIOs”) and principal only securities (“POs”), among other types of structured Agency RMBS.
Our investment strategy focuses on, and our portfolio consists of, two categories of Agency RMBS: (i) traditional pass-through Agency RMBS, such as mortgage pass-through certificates issued by the Federal National Mortgage Association ("Fannie Mae"), the Federal Home Loan Mortgage Corporation ("Freddie Mac" and together with Fannie Mae, the "Enterprises") or the Government National Mortgage Association ("Ginnie Mae" and, together with the Enterprises the “GSEs”) and collateralized mortgage obligations (“CMOs”) issued by the GSEs (“PT RMBS”) and (ii) structured Agency RMBS, such as interest-only securities (“IOs”), inverse interest-only securities (“IIOs”) and principal only securities (“POs”), among other types of structured Agency RMBS.
On August 4, 2020, we entered into the August 2020 Equity Distribution Agreement with four sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $150,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
On March 7, 2023, we entered into an equity distribution agreement (the “March 2023 Equity Distribution Agreement”) with three sales agents pursuant to which we may offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that are deemed to be “at the market” offerings and privately negotiated transactions.
Capital Raising Activities On January 23, 2020, we entered into an equity distribution agreement (the “January 2020 Equity Distribution Agreement”) with three sales agents pursuant to which we could offer and sell, from time to time, up to an aggregate amount of $200,000,000 of shares of our common stock in transactions that were deemed to be “at the market” offerings and privately negotiated transactions.
On March 7, 2023, we entered into an equity distribution agreement (the “March 2023 Equity Distribution Agreement”) with three sales agents pursuant to which we may offer and sell, from time to time, up to an aggregate amount of $250,000,000 of shares of our common stock in transactions that are deemed to be “at the market” offerings and privately negotiated transactions.
These factors include: ● interest rate trends; ● increases in our cost of funds resulting from increases in the Federal Funds rate that are controlled by the Fed that occurred in 2022 and are likely to occur in 2023; ● the difference between Agency RMBS yields and our funding and hedging costs; ● competition for, and supply of, investments in Agency RMBS; ● actions taken by the U.S. government, including the presidential administration, the Fed, the FHFA, the FHA, the FOMC and the U.S.
These factors include: ● interest rate trends; ● increases in our cost of funds resulting from increases in the Federal Funds rate that are controlled by the Federal Reserve (the "Fed") that occurred in 2022 and 2023; ● the difference between Agency RMBS yields and our funding and hedging costs; ● competition for, and supply of, investments in Agency RMBS; ● actions taken by the U.S. government, including the presidential administration, the Fed, the Federal Housing Financing Agency (the “FHFA”), the Federal Deposit Insurance Corporation (the "FDIC"), the Federal Housing Administration (the “FHA”), the Federal Open Market Committee (the “FOMC”) and the U.S.
During the years ended December 31, 2022, 2021 and 2020, the Company received proceeds of $2,759.9 million $2,851.7 million, and $4,200.5 million, respectively, from the sales of RMBS.
During the years ended December 31, 2023, 2022 and 2021, the Company received proceeds of $835.1 million, $2,759.9 million, and $2,851.7 million, respectively, from the sales and maturities of RMBS and U.S.
During the year ended December 31, 2022, the Company repurchased a total of 2,538,470 shares of its common stock at an aggregate cost of approximately $24.5 million, including commissions and fees, for a weighted average price of $9.63 per share.
During the year ended December 31, 2023, the Company repurchased a total of 1,072,789 shares of its common stock at an aggregate cost of approximately $9.4 million, including commissions and fees, for a weighted average price of $8.79 per share.
This stock repurchase program has no termination date. From the inception of the stock repurchase program through December 31, 2022, the Company repurchased a total of 3,675,572 shares at an aggregate cost of approximately $64.8 million, including commissions and fees, for a weighted average price of $17.63 per share.
This stock repurchase program has no termination date. 44 Table of Contents From the inception of the stock repurchase program through December 31, 2023, the Company repurchased a total of 4,748,361 shares at an aggregate cost of approximately $74.2 million, including commissions and fees, for a weighted average price of $15.63 per share.
Structured PT RMBS RMBS Total Three Months Ended Portfolio (%) Portfolio (%) Portfolio (%) December 31, 2022 4.9 6.0 5.0 September 30, 2022 6.1 10.4 6.5 June 30, 2022 8.3 13.7 9.4 March 31, 2022 8.1 19.5 10.7 December 31, 2021 9.0 24.6 11.4 September 30, 2021 9.8 25.1 12.4 June 30, 2021 10.9 29.9 12.9 March 31, 2021 9.9 40.3 12.0 54 The following tables summarize certain characteristics of the Company’s PT RMBS and structured RMBS as of December 31, 2022 and 2021: ($ in thousands) Weighted Percentage Average of Weighted Maturity Fair Entire Average in Longest Asset Category Value Portfolio Coupon Months Maturity December 31, 2022 Fixed Rate RMBS $ 3,519,906 99.4 % 3.47 % 339 1-Nov-52 Interest-Only Securities 19,669 0.6 % 4.01 % 234 25-Jul-48 Inverse Interest-Only Securities 427 0.0 % 0.00 % 286 15-Jun-42 Total Mortgage Assets $ 3,540,002 100.0 % 3.46 % 336 1-Nov-52 December 31, 2021 Fixed Rate RMBS $ 6,298,189 96.7 % 2.93 % 342 1-Dec-51 Interest-Only Securities 210,382 3.2 % 3.40 % 263 25-Jan-52 Inverse Interest-Only Securities 2,524 0.1 % 3.75 % 300 15-Jun-42 Total Mortgage Assets $ 6,511,095 100.0 % 3.03 % 325 25-Jan-52 ($ in thousands) December 31, 2022 December 31, 2021 Percentage of Percentage of Agency Fair Value Entire Portfolio Fair Value Entire Portfolio Fannie Mae $ 2,320,960 65.6 % $ 4,719,349 72.5 % Freddie Mac 1,219,042 34.4 % 1,791,746 27.5 % Total Portfolio $ 3,540,002 100.0 % $ 6,511,095 100.0 % December 31, 2022 December 31, 2021 Weighted Average Pass-through Purchase Price $ 106.41 $ 107.19 Weighted Average Structured Purchase Price $ 18.74 $ 15.21 Weighted Average Pass-through Current Price $ 91.46 $ 105.31 Weighted Average Structured Current Price $ 14.05 $ 14.08 Effective Duration (1) 5.58 3.39 (1) Effective duration is the approximate percentage change in price for a 100 bps change in rates.
Structured PT RMBS RMBS Total Three Months Ended Portfolio (%) Portfolio (%) Portfolio (%) December 31, 2023 5.4 7.9 5.5 September 30, 2023 6.1 5.7 6.0 June 30, 2023 5.6 7.0 5.6 March 31, 2023 3.9 5.7 4.0 December 31, 2022 4.9 6.0 5.0 September 30, 2022 6.1 10.4 6.5 June 30, 2022 8.3 13.7 9.4 March 31, 2022 8.1 19.5 10.7 The following tables summarize certain characteristics of the Company’s PT RMBS and structured RMBS as of December 31, 2023 and 2022: ($ in thousands) Weighted Percentage Average of Weighted Maturity Fair Entire Average in Longest Asset Category Value Portfolio Coupon Months Maturity December 31, 2023 Fixed Rate RMBS $ 3,877,082 99.6 % 4.33 % 334 1-Nov-53 Interest-Only Securities 16,572 0.4 % 4.01 % 223 25-Jul-48 Inverse Interest-Only Securities 358 0.0 % 0.00 % 274 15-Jun-42 Total Mortgage Assets $ 3,894,012 100.0 % 4.30 % 331 1-Nov-53 December 31, 2022 Fixed Rate RMBS $ 3,519,906 99.4 % 3.47 % 339 1-Nov-52 Interest-Only Securities 19,669 0.6 % 4.01 % 234 25-Jul-48 Inverse Interest-Only Securities 427 0.0 % 0.00 % 286 15-Jun-42 Total Mortgage Assets $ 3,540,002 100.0 % 3.46 % 336 1-Nov-52 ($ in thousands) December 31, 2023 December 31, 2022 Percentage of Percentage of Agency Fair Value Entire Portfolio Fair Value Entire Portfolio Fannie Mae $ 2,714,192 69.7 % $ 2,320,960 65.6 % Freddie Mac 1,179,820 30.3 % 1,219,042 34.4 % Total Portfolio $ 3,894,012 100.0 % $ 3,540,002 100.0 % December 31, 2023 December 31, 2022 Weighted Average Pass-through Purchase Price $ 104.10 $ 106.41 Weighted Average Structured Purchase Price $ 18.74 $ 18.74 Weighted Average Pass-through Current Price $ 95.70 $ 91.46 Weighted Average Structured Current Price $ 13.51 $ 14.05 Effective Duration (1) 4.40 5.58 (1) Effective duration is the approximate percentage change in price for a 100 bps change in rates.
On an economic basis, our interest expense on borrowings for the years ended December 31, 2022, 2021 and 2020 was $44.9 million, $25.4 million and $48.4 million, respectively, resulting in $99.8 million, $109.3 million and $67.7 million of economic net interest income, respectively.
On an economic basis, our interest expense on borrowings for the years ended December 31, 2023, 2022 and 2021 was $109.6 million, $48.1 million and $25.8 million, respectively, resulting in $68.0 million, $96.5 million and $108.9 million of economic net interest income, respectively.
($ in thousands) Average Average Advisory Services Orchid Orchid Management Overhead Three Months Ended MBS Equity Fee Allocation Total December 31, 2022 $ 3,370,608 $ 823,516 $ 2,566 $ 560 $ 3,126 September 30, 2022 3,571,037 839,935 2,616 522 3,138 June 30, 2022 4,260,727 866,539 2,631 519 3,150 March 31, 2022 5,545,844 853,577 2,634 441 3,075 December 31, 2021 6,056,259 806,382 2,587 443 3,030 September 30, 2021 5,136,331 672,384 2,156 390 2,546 June 30, 2021 4,504,887 542,679 1,792 395 2,187 March 31, 2021 4,032,716 456,687 1,621 404 2,025 December 31, 2020 3,633,631 387,503 1,384 442 1,826 September 30, 2020 3,422,564 368,588 1,252 377 1,629 June 30, 2020 3,126,779 361,093 1,268 348 1,616 March 31, 2020 3,269,859 376,673 1,377 347 1,724 Years Ended December 31, 2022 $ 4,187,054 $ 845,892 $ 10,447 $ 2,042 $ 12,489 December 31, 2021 4,932,548 619,533 8,156 1,632 9,788 December 31, 2020 3,363,208 373,464 5,281 1,514 6,795 Financial Condition: Mortgage-Backed Securities As of December 31, 2022, our RMBS portfolio consisted of $3,540.0 million of Agency RMBS at fair value and had a weighted average coupon on assets of 3.46%.
($ in thousands) Average Average Advisory Services Orchid Orchid Management Overhead Three Months Ended MBS Equity Fee Allocation Total December 31, 2023 $ 4,207,118 $ 851,532 $ 2,275 $ 617 $ 2,892 September 30, 2023 4,447,098 964,230 2,870 557 3,427 June 30, 2023 4,186,939 899,109 2,704 639 3,343 March 31, 2023 3,769,954 865,722 2,642 576 3,218 December 31, 2022 3,370,608 823,516 2,566 560 3,126 September 30, 2022 3,571,037 839,935 2,616 522 3,138 June 30, 2022 4,260,727 866,539 2,631 519 3,150 March 31, 2022 5,545,844 853,577 2,634 441 3,075 December 31, 2021 6,056,259 806,382 2,587 443 3,030 September 30, 2021 5,136,331 672,384 2,156 390 2,546 June 30, 2021 4,504,887 542,679 1,792 395 2,187 March 31, 2021 4,032,716 456,687 1,621 404 2,025 Years Ended December 31, 2023 $ 4,152,777 $ 895,148 $ 10,491 $ 2,389 $ 12,880 December 31, 2022 4,187,054 845,892 10,447 2,042 12,489 December 31, 2021 4,932,548 619,533 8,156 1,632 9,788 Financial Condition: Mortgage-Backed Securities As of December 31, 2023, our RMBS portfolio consisted of $3,894.0 million of Agency RMBS at fair value and had a weighted average coupon on assets of 4.30%.