MBIA Inc.
US ˙ NYSE ˙ US55262C1009

SecurityMBI / MBIA Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership25,079 shares
Latest Disclosed Value $ 148,217
Trexquant Investment LP reports 39.91% decrease in ownership of MBI / MBIA Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 25,079 shares of MBIA Inc. (US:MBI) valued at $148,217 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 41,734 shares of MBIA Inc.. This represents a change in shares of -39.91% during the quarter. The current value of the position is $153,734 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MBIA COM 55262C100 25,079 -16,655 -39.91 148 -50.34 0.0011
2026-02-17 2025-12-31 13F MBIA COM 55262C100 41,734 41,734 299 0.0027
2025-11-14 2025-09-30 13F MBIA COM 55262C100 0 -63,067 -100.00 0 -100.00
2025-08-12 2025-06-30 13F MBIA COM 55262C100 63,067 -90,422 -58.91 274 -64.27 0.0031
2025-05-14 2025-03-31 13F MBIA COM 55262C100 153,489 43,947 40.12 764 8.06 0.0089
2025-02-12 2024-12-31 13F MBIA COM 55262C100 109,542 92,892 557.91 708 1,098.31 0.0082
2024-11-12 2024-09-30 13F MBIA COM 55262C100 16,650 -48,435 -74.42 59 -83.47 0.0008
2024-08-13 2024-06-30 13F MBIA COM 55262C100 65,085 9,242 16.55 357 -5.31 0.0055
2024-05-14 2024-03-31 13F MBIA COM 55262C100 55,843 55,843 377 0.0075
2024-02-09 2023-12-31 13F MBIA COM 55262C100 0 -23,311 -100.00 0 -100.00
2023-11-13 2023-09-30 13F MBIA COM 55262C100 23,311 23,311 168 0.0042
2023-08-11 2023-06-30 13F MBIA COM 55262C100 0 -21,050 -100.00 0 -100.00
2023-05-15 2023-03-31 13F MBIA COM 55262C100 21,050 7,103 50.93 195 8.38 0.0054
2023-02-13 2022-12-31 13F MBIA COM 55262C100 13,947 13,947 179 0.0051
2021-08-12 2021-06-30 13F MBIA COM 55262C100 0 -14,445 -100.00 0 -100.00
2021-05-13 2021-03-31 13F MBIA COM 55262C100 14,445 -37,802 -72.35 139 -59.59 0.0128
2021-02-11 2020-12-31 13F MBIA COM 55262C100 52,247 52,247 344 0.0364
2020-11-06 2020-09-30 13F MBIA COM 55262C100 0 -30,915 -100.00 0 -100.00
2020-08-07 2020-06-30 13F MBIA COM 55262C100 30,915 30,915 224 0.0156
2020-05-08 2020-03-31 13F MBIA COM 55262C100 0 -14,052 -100.00 0 -100.00
2020-02-12 2019-12-31 13F MBIA COM 55262C100 14,052 38 0.27 131 1.55 0.0077
2020-02-18 2019-09-30 13F/A-1 MBIA COM 55262C100 14,014 -13,994 -49.96 129 -50.57 0.0111
2019-11-08 2019-09-30 13F MBIA COM 55262C100 14,014 -13,994 129 11,141.3973
2019-08-09 2019-06-30 13F MBIA COM 55262C100 28,008 14,818 112.34 261 107.14 0.0235
2019-05-13 2019-03-31 13F MBIA COM 55262C100 13,190 -11,764 -47.14 126 -43.50 0.0089
2019-02-13 2018-12-31 13F MBIA COM 55262C100 24,954 11,947 91.85 223 60.43 0.0139
2018-11-09 2018-09-30 13F MBIA COM 55262C100 13,007 13,007 139 0.0105
2017-11-09 2017-09-30 13F MBIA COM 55262C100 0 -30,500 -100.00 0 -100.00
2017-08-01 2017-06-30 13F MBIA COM 55262C100 30,500 15,713 106.26 288 130.40 0.0788
2017-05-08 2017-03-31 13F MBIA COM 55262C100 14,787 14,787 125 0.0160
2016-05-11 2016-03-31 13F MBIA COM 55262C100 0 -107,200 -100.00 0 -100.00
2016-02-10 2015-12-31 13F MBIA COM 55262C100 107,200 107,200 0.00 695 0.0612
2015-11-02 2015-09-30 13F MBIA COM 55262C100 0 -30,900 -100.00 0 -100.00
2015-08-12 2015-06-30 13F MBIA COM 55262C100 30,900 -139,775 -81.90 185 -88.34 0.0208
2015-05-13 2015-03-31 13F MBIA COM 55262C100 170,675 134,375 370.18 1,587 358.67 0.1620
2015-02-13 2014-12-31 13F MBIA COM 55262C100 36,300 36,300 346 0.0612
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.