MBIA Inc. (MBI) Ownership
MBI ownership summary
as of October 18, 2026- Institutions
- 54.5% of shares outstanding
- Insiders
- 17.94% of shares outstanding
- Shares outstanding
- 51.0M
- Float
- 41.9M shares available to trade
- Short interest
- 6.44% 2.9M shares short
- Days to cover
- 6.70 short interest up 4.3% vs prior month
- Institutions 54.49%
- Insiders 17.94%
- Other investors 27.57%
MBI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Kahn Brothers & CO Inc /DE/ | 8.26% | 4.2M | $18.6M | +2.2M (+104.9%) | June 30, 2026 |
| 2 | BlackRock Inc | 7.20% | 3.7M | $16.2M | +280,169 (+8.3%) | June 30, 2026 |
| 3 | Wolf Hill Capital Management, LP | 4.15% | 2.1M | $9.3M | −427,529 (−16.8%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.90% | 2.0M | $8.8M | +15,996 (+0.8%) | June 30, 2026 |
| 5 | Valueworks LLC | 3.86% | 2.0M | $8.7M | +35,338 (+1.8%) | June 30, 2026 |
| 6 | Hosking Partners LLP | 3.04% | 1.5M | $6.8M | −35,648 (−2.2%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 2.24% | 1.1M | $5.0M | +55,737 (+5.1%) | June 30, 2026 |
| 8 | State Street Corp | 2.14% | 1.1M | $4.8M | +24,206 (+2.3%) | June 30, 2026 |
| 9 | HPM Partners LLC | 2.13% | 1.1M | $4.8M | +655,209 (+151.6%) | June 30, 2026 |
| 10 | TCW Group Inc | 2.09% | 1.1M | $4.7M | +26,800 (+2.6%) | June 30, 2026 |
| 11 | Northern Trust Corp | 0.87% | 444K | $2.0M | +39,741 (+9.8%) | June 30, 2026 |
| 12 | UBS Group AG | 0.78% | 400K | $1.8M | −266,347 (−40.0%) | June 30, 2026 |
| 13 | Charles Schwab Investment Management Inc | 0.74% | 376K | $1.7M | +9,419 (+2.6%) | June 30, 2026 |
| 14 | Chou Associates Management Inc | 0.63% | 321K | $1.4M | — | June 30, 2026 |
| 15 | Vanguard Portfolio Management, LLC | 0.61% | 311K | $1.4M | +47,122 (+17.8%) | June 30, 2026 |
| 16 | Renaissance Technologies Corp | 0.61% | 311K | $1.4M | −99,000 (−24.2%) | June 30, 2026 |
| 17 | Whitebox Advisors, LLC | 0.60% | 304K | $1.3M | — | June 30, 2026 |
| 18 | Vanguard Fiduciary Trust Co | 0.59% | 303K | $1.3M | −7,922 (−2.6%) | June 30, 2026 |
| 19 | Tudor Investment Corp Et AL | 0.58% | 298K | $1.3M | −50,596 (−14.5%) | June 30, 2026 |
| 20 | The Goldman Sachs Group Inc | 0.57% | 289K | $1.3M | −34,671 (−10.7%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 3.3M shares and 7 cut 922K.
MBI top mutual fund and ETF holders
19 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.81% | 1.4M | $6.3M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.19% | 1.1M | $4.9M | −12,864 (−1.1%) | September 30, 2026 |
| 3 | Fidelity Small Cap Index | 0.96% | 489K | $2.2M | +1,073 (+0.2%) | July 31, 2026 |
| 4 | iShares Russell 2000 Value ETF | 0.81% | 412K | $1.8M | +624 (+0.2%) | September 30, 2026 |
| 5 | Vanguard Russell 2000 ETF | 0.49% | 248K | $1.1M | −18,178 (−6.8%) | September 30, 2026 |
| 6 | Fidelity Extended Market Index | 0.44% | 223K | $984,691 | −1,200 (−0.5%) | August 31, 2026 |
| 7 | Schwab US Small-Cap ETF™ | 0.42% | 214K | $943,515 | +144 (+0.1%) | September 30, 2026 |
| 8 | iShares Micro-Cap ETF | 0.26% | 134K | $592,188 | −926 (−0.7%) | September 30, 2026 |
| 9 | Schwab Small Cap Index | 0.22% | 113K | $499,093 | — | August 31, 2026 |
| 10 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.20% | 101K | $446,962 | −7,049 (−6.5%) | September 30, 2026 |
| 11 | iShares Russell 2000 Small-Cap Idx Instl | 0.18% | 92K | $404,384 | — | August 31, 2026 |
| 12 | Fidelity Total Market Index | 0.17% | 86K | $378,621 | — | August 31, 2026 |
| 13 | Bridge Hosking Global Equity B USD Acc | 0.15% | 74K | $327,235 | −1,304 (−1.7%) | September 30, 2026 |
| 14 | EA Bridgeway Ultra-Small Company Mkt ETF | 0.14% | 74K | $324,386 | — | September 30, 2026 |
| 15 | Fidelity Series Total Market Index | 0.14% | 70K | $306,588 | +2,958 (+4.4%) | August 31, 2026 |
| 16 | iShares Core S&P Total US Stock Mkt ETF | 0.14% | 69K | $304,996 | +60 (+0.1%) | September 30, 2026 |
| 17 | Hosking Global No.1 A1 | 0.13% | 65K | $285,825 | −3,664 (−5.4%) | September 30, 2026 |
| 18 | Fidelity Small Cap Value Index | 0.12% | 64K | $280,344 | +1,325 (+2.1%) | July 31, 2026 |
| 19 | Nuveen Small Cap Blend Idx R6 | 0.12% | 61K | $270,302 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
MBI insider transactions
latest 5| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-01-02 | Theodore Shasta | Sell | $6.74 | 9,570 | $64,502 |
| 2024-12-30 | Theodore Shasta | Sell | $6.13 | 11,261 | $69,030 |
| 2024-11-19 | Richard C Vaughan | Sell | $6.59 | 9,000 | $59,310 |
| 2024-06-13 | Theodore Shasta | Sell | $5.52 | 21,405 | $118,156 |
| 2023-12-27 | Richard C Vaughan | Sell | $6.31 | 12,000 | $75,720 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
MBI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MBI
Institutional investors own 54.5% of MBIA's shares and insiders 17.94%. The largest holder is Kahn Brothers & CO Inc /DE/ with 8.26% of the shares (4.2M), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 7 reduced their stake in the latest filings. Short interest is 6.44% of the float, or 6.70 days of average trading volume. The share count fell 73.8% since 2014.
Related: MBI analyst forecast, MBI key metrics. See the MBI stock overview for the latest quote and news.
MBI ownership FAQ
Who owns the most MBIA stock?
The largest shareholders of MBIA are Kahn Brothers & CO Inc /DE/ (8.26%), BlackRock Inc (7.20%), Wolf Hill Capital Management, LP (4.15%), Vanguard Capital Management, LLC (3.90%), Valueworks LLC (3.86%).
What percentage of MBIA is owned by institutions?
Institutions hold 54.5% of MBIA's shares outstanding; insiders hold 17.94%.
Which funds own MBIA?
The largest fund holders of MBIA are Vanguard MStar Total Stk Mkt Idx Invest (2.81%), iShares Russell 2000 ETF (2.19%), Fidelity Small Cap Index (0.96%), iShares Russell 2000 Value ETF (0.81%), Vanguard Russell 2000 ETF (0.49%).
What is MBIA's short interest?
2.9M shares of MBIA were sold short, 6.44% of the float; at the average daily volume it would take 6.70 days to cover.
Are insiders buying or selling MBIA?
Of the latest 5 reported insider transactions in MBIA (since December 27, 2023), 0 were purchases and 5 were sales.
How many shares of MBIA are outstanding?
MBIA has 51.0M shares outstanding, of which 41.9M are in the public float.