MBI Institutional Ownership & Shareholders
MBIA INC (MBI) is currently held by 123 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $166.10M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Kahn Brothers Group is currently the largest disclosed institutional shareholder of MBI tracked by InsiderSet, reporting ownership valued at approximately $27.47M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $19.05M, representing an estimated loss of -30.67% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 73% of the total disclosed MBI value among the investors covered in this analysis. Major shareholders include Kahn Brothers Group, Blackrock, Inc., Wolf Hill Capital Management, Lp, and several other long-term asset managers with concentrated positions in MBIA INC (MBI).
This page ranks the largest institutional MBI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
123
Total Reported Value
$166.10M
Largest Holder
Kahn Brothers Group
Largest Position
$27.47M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
110
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Kahn Brothers Group | Thomas Graham, Alan, Irving Kahns | 4.34% | 4,213,920 | $27,474,758 | $19,046,918 | -$8,427,840 | -30.67% |
| Blackrock, Inc. | 0.00% | 3,673,151 | $23,948,944 | $16,602,643 | -$7,346,301 | -30.67% | |
| Wolf Hill Capital Management, Lp | 1.34% | 2,118,014 | $13,809,451 | $9,573,423 | -$4,236,028 | -30.67% | |
| Vanguard Capital Management Llc | 0.00% | 1,991,235 | $12,982,852 | $9,000,382 | -$3,982,470 | -30.67% | |
| Valueworks Llc | 2.68% | 1,967,228 | $12,826,327 | $8,891,871 | -$3,934,456 | -30.67% | |
| Geode Capital Management, Llc | 0.00% | 1,142,258 | $7,449,558 | $5,163,006 | -$2,286,552 | -30.69% | |
| State Street Corp | 0.00% | 1,092,959 | $7,126,093 | $4,940,175 | -$2,185,918 | -30.67% | |
| Cerity Partners Llc | 0.01% | 1,087,425 | $7,090,012 | $4,915,161 | -$2,174,851 | -30.67% | |
| Hosking Partners Llp | 0.22% | 1,456,452 | $6,204,486 | $6,583,163 | +$378,677 | +6.10% | |
| Russell Investments Group, Ltd. | 0.00% | 459,085 | $2,993,232 | $2,075,064 | -$918,168 | -30.67% | |
| Northern Trust Corp | 0.00% | 444,082 | $2,895,414 | $2,007,251 | -$888,163 | -30.67% | |
| Ubs Group Ag | 0.00% | 400,226 | $2,609,474 | $1,809,022 | -$800,452 | -30.67% | |
| Charles Schwab Investment Management Inc | 0.00% | 376,149 | $2,452,491 | $1,700,193 | -$752,298 | -30.67% | |
| Chou Associates Management | Francis Chou | 0.97% | 321,000 | $2,092,920 | $1,450,920 | -$642,000 | -30.67% |
| Vanguard Portfolio Management Llc | 0.00% | 311,198 | $2,029,011 | $1,406,615 | -$622,396 | -30.67% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 310,892 | $2,027,016 | $1,405,232 | -$621,784 | -30.67% |
| Vanguard Fiduciary Trust Co | 0.00% | 302,691 | $1,973,545 | $1,368,163 | -$605,382 | -30.67% | |
| Tudor Investment Corp Et Al | 0.01% | 298,409 | $1,945,627 | $1,348,809 | -$596,818 | -30.67% | |
| Goldman Sachs Group Inc | 0.00% | 289,008 | $1,884,333 | $1,306,316 | -$578,017 | -30.67% | |
| Morgan Stanley | 0.00% | 249,088 | $1,624,054 | $1,125,878 | -$498,176 | -30.67% | |
| Toronto Dominion Bank | 0.00% | 227,905 | $1,485,941 | $1,030,131 | -$455,810 | -30.67% | |
| Jtc Employer Solutions Trustee Ltd | 0.09% | 180,000 | $1,173,000 | $813,600 | -$359,400 | -30.64% | |
| Wells Fargo & Company/Mn | 0.00% | 157,381 | $1,026,123 | $711,362 | -$314,761 | -30.67% | |
| Alta Fundamental Advisers Llc | 0.35% | 148,662 | $969,276 | $671,952 | -$297,324 | -30.67% | |
| Price T Rowe Associates Inc | 0.00% | 146,561 | $956,000 | $662,456 | -$293,544 | -30.71% | |
| Aqr Capital Management Llc | 0.00% | 140,983 | $919,209 | $637,243 | -$281,966 | -30.67% | |
| Nuveen, Llc | 0.00% | 134,435 | $876,516 | $607,646 | -$268,870 | -30.67% | |
| Group One Trading Llc | 0.02% | 129,044 | $841,367 | $583,279 | -$258,088 | -30.67% | |
| Quantinno Capital Management Lp | 0.00% | 127,844 | $833,543 | $577,855 | -$255,688 | -30.67% | |
| Bluefin Capital Management, Llc | 0.22% | 115,006 | $749,839 | $519,827 | -$230,012 | -30.67% | |
| State Of Wisconsin Investment Board | 0.00% | 113,013 | $736,845 | $510,819 | -$226,026 | -30.67% | |
| Squarepoint Ops Llc | 0.00% | 101,858 | $664,114 | $460,398 | -$203,716 | -30.67% | |
| Freestone Capital Holdings, Llc | 0.02% | 99,763 | $650,455 | $450,929 | -$199,526 | -30.67% | |
| Bank Of New York Mellon Corp | 0.00% | 150,847 | $642,608 | $681,828 | +$39,220 | +6.10% | |
| Jane Street Group, Llc | 0.00% | 96,934 | $632,010 | $438,142 | -$193,868 | -30.67% | |
| Imc-Chicago, Llc | 0.01% | 143,319 | $610,539 | $647,802 | +$37,263 | +6.10% | |
| Bridgeway Capital Management, Llc | 0.01% | 81,700 | $532,684 | $369,284 | -$163,400 | -30.67% | |
| Bank Of America Corp | 0.00% | 76,686 | $499,993 | $346,621 | -$153,372 | -30.67% | |
| Alliancebernstein L.P. | 0.00% | 77,440 | $457,670 | $350,029 | -$107,641 | -23.52% | |
| Invesco Ltd. | 0.00% | 67,532 | $440,308 | $305,245 | -$135,063 | -30.67% | |
| Trexquant Investment Lp | 0.00% | 66,458 | $433,306 | $300,390 | -$132,916 | -30.67% | |
| Rhumbline Advisers | 0.00% | 58,815 | $383,467 | $265,844 | -$117,623 | -30.67% | |
| Nbc Securities, Inc. | 0.02% | 83,337 | $355,016 | $376,683 | +$21,667 | +6.10% | |
| Exoduspoint Capital Management, Lp | 0.00% | 46,010 | $299,985 | $207,965 | -$92,020 | -30.67% | |
| Deutsche Bank Ag\ | 0.00% | 43,643 | $284,552 | $197,266 | -$87,286 | -30.67% | |
| Empirical Asset Management, Llc | 0.06% | 42,300 | $275,796 | $191,196 | -$84,600 | -30.67% | |
| Citadel Advisors Llc | 0.00% | 40,954 | $267,020 | $185,112 | -$81,908 | -30.67% | |
| Barclays Plc | 0.00% | 37,008 | $241,291 | $167,276 | -$74,015 | -30.67% | |
| Empowered Funds, Llc | 0.00% | 32,235 | $210,172 | $145,702 | -$64,470 | -30.67% | |
| Two Sigma Investments, Lp | 0.00% | 31,676 | $206,528 | $143,176 | -$63,352 | -30.68% |
Frequently asked questions about MBI
Who are the largest institutional holders of MBI?
The largest institutional holders of MBI reported in the latest SEC Form 13F filings include Kahn Brothers Group, Blackrock, Inc., Wolf Hill Capital Management, Lp, Vanguard Capital Management Llc, and Valueworks Llc. InsiderSet ranks institutional holders by their latest reported MBI position.
What is MBI institutional ownership?
This page tracks MBI positions reported by institutional investment managers through SEC Form 13F. MBIA INC (MBI) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MBI?
InsiderSet currently tracks 123 institutional managers reporting MBI holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MBI shareholders.
How much MBI stock do institutions own?
Institutional investment managers disclosed approximately $166.10M in MBI holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MBI institutional ownership last updated?
The latest MBI institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MBI holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MBI position after the reporting date.
Are institutions buying or selling MBI?
Institutional buying and selling can be analyzed by comparing MBI positions across consecutive 13F reporting periods. InsiderSet's MBI Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MBI ownership changes.
How has MBI institutional ownership changed over time?
InsiderSet tracks MBI institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.