MBI · Mbia Inc · Shareholders & Ownership

$4.46 -0.08 (-1.76%) Q2 2026 earnings call transcript

Russell 2000 member Rebalance outlook locked

Market Cap

$231.61M

51.02M

Volume · Oct 28 200.7K Avg daily vol (3M) 427.51K

Every disclosed holder of MBI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns MBI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	128	27,645,871	54.19%	Yes
Insiders (Forms 3, 4, 5)	10	5,819,378	11.41%	Yes
13D/G-only blocks	2	4,234,752	8.30%	Yes
Remaining	—	13,316,443	26.10%	Rest
Registered funds (N-PORT, not summed)	95	6,524,819	12.79%	No

Shares outstanding: 51,016,444, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MBI

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	KAHN BROTHERS GROUP INC 13G CIK 1039565 · Investment adviser · Aug 14, 2026 Rule 13d-1(b), qualified institution, not summed	4,213,920	8.26%	—	Aug 14, 2026	Rule 13d-1(b), qualified institution, not summed
1.1	KAHN BROTHERS GROUP INC 13F CIK 1039565 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,213,920	8.26%	+2,157,486	Jun 30, 2026	carried, not yet filed for the newest quarter
2	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,673,151	7.20%	+280,169	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,235,904	2.42%	+89,760	Jun 30, 2026	iShares Trust, not summed
2.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	461,763	0.91%	+62,126	Jun 30, 2026	iShares Trust, not summed
2.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	155,812	0.31%	+40,748	Jun 30, 2026	iShares Trust, not summed
2.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	91,697	0.18%	+18,743	Jun 30, 2026	Quantitative Master Series LLC, not summed
2.5	iShares Core S&P Total U.S. Stock Market ETF Fund S000004317 · Registered fund · Jun 30, 2026 iShares Trust, not summed	68,602	0.13%	+1,632	Jun 30, 2026	iShares Trust, not summed
3	Leeam S. Lowin 13G CIK 940880 · Unknown · Feb 27, 2026 Rule 13d-1(d), exempt investor	3,331,947	6.53%	—	Feb 27, 2026	Rule 13d-1(d), exempt investor
4	Fallon William C Insider CIK 1334233 · Mar 4, 2026 Director, CEO & President, issuer-wide	2,826,660	5.54%	-39,658	Mar 4, 2026	Director, CEO & President, issuer-wide
5	Wolf Hill Capital Management, LP 13F CIK 1785988 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,118,014	4.15%	-427,529	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	Wolf Hill Capital Management, LP 13G CIK 1785988 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,118,014	4.15%	-427,529	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
6	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,991,235	3.90%	+15,996	Jun 30, 2026	carried, not yet filed for the newest quarter
7	VALUEWORKS LLC 13F CIK 1282189 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,967,228	3.86%	+35,338	Jun 30, 2026	carried, not yet filed for the newest quarter
8	Hosking Partners LLP 13F CIK 1650135 · Registered investment adviser · Sep 30, 2026	1,456,452	2.85%	-92,813	Sep 30, 2026
9	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,431,336	2.81%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
10	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,142,258	2.24%	+55,737	Jun 30, 2026	carried, not yet filed for the newest quarter
11	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,092,959	2.14%	+24,206	Jun 30, 2026	carried, not yet filed for the newest quarter
11.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	15,697	0.03%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
11.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	993	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
11.3	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	456	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
12	Cerity Partners LLC 13F CIK 1566475 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,087,425	2.13%	+655,209	Jun 30, 2026	carried, not yet filed for the newest quarter
13	TCW GROUP INC 13F CIK 850401 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,065,260	2.09%	+26,800	Jun 30, 2026	carried, not yet filed for the newest quarter
14	Bergonzi Adam T. Insider CIK 1717578 · Mar 4, 2026 Assistant Vice President, issuer-wide	943,262	1.85%	-13,280	Mar 4, 2026	Assistant Vice President, issuer-wide
15	DIMENSIONAL FUND ADVISORS LP 13G CIK 354204 · Registered investment adviser · Dec 29, 2023 Rule 13d-1(b), qualified institution	902,805	1.77%	—	Dec 29, 2023	Rule 13d-1(b), qualified institution
16	Young Christopher H. Insider CIK 1717555 · Mar 4, 2026 Assistant Vice President, issuer-wide	651,544	1.28%	-8,668	Mar 4, 2026	Assistant Vice President, issuer-wide
17	Avitabile Daniel M. Insider CIK 1717524 · Mar 4, 2026 Assistant Vice President, issuer-wide	650,527	1.28%	-8,668	Mar 4, 2026	Assistant Vice President, issuer-wide
18	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	510,548	1.00%	+8,527	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
19	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	459,085	0.90%	+29,052	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	U.S. Small Cap Equity Fund Fund S000006864 · Registered fund · Jun 30, 2026 RUSSELL INVESTMENT FUNDS, not summed	32,279	0.06%	0	Jun 30, 2026	RUSSELL INVESTMENT FUNDS, not summed
20	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	444,082	0.87%	+39,741	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	24,342	0.05%	+3,008	Jun 30, 2026	Northern Funds, not summed
20.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	11,775	0.02%	-559	Jun 30, 2026	Northern Funds, not summed
21	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	400,226	0.78%	-266,347	Jun 30, 2026	carried, not yet filed for the newest quarter
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	376,149	0.74%	+9,419	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · Aug 31, 2026 SCHWAB STRATEGIC TRUST, not summed	208,102	0.41%	-1,845	Aug 31, 2026	SCHWAB STRATEGIC TRUST, not summed
22.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	113,173	0.22%	+12,355	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
22.3	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · Aug 31, 2026 SCHWAB STRATEGIC TRUST, not summed	30,503	0.06%	+443	Aug 31, 2026	SCHWAB STRATEGIC TRUST, not summed
22.4	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	22,069	0.04%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
23	Chou Associates Management Inc. 13F CIK 1389403 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	321,000	0.63%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
24	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	311,198	0.61%	+47,122	Jun 30, 2026	carried, not yet filed for the newest quarter
25	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	310,892	0.61%	-99,000	Jun 30, 2026	carried, not yet filed for the newest quarter
26	WHITEBOX ADVISORS LLC 13F CIK 1257391 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	304,461	0.60%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
27	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	302,691	0.59%	-7,922	Jun 30, 2026	carried, not yet filed for the newest quarter
28	TUDOR INVESTMENT CORP ET AL 13F CIK 923093 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	298,409	0.58%	-50,596	Jun 30, 2026	carried, not yet filed for the newest quarter
29	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	289,008	0.57%	-34,671	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	64,195	0.13%	+30,193	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
29.2	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · Aug 31, 2026 Goldman Sachs ETF Trust, not summed	31,003	0.06%	-18,455	Aug 31, 2026	Goldman Sachs ETF Trust, not summed
30	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	249,088	0.49%	-4,818	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Schachinger Joseph R. Insider CIK 1706359 · Mar 4, 2026 EVP, CFO and Treasurer, issuer-wide	248,057	0.49%	-2,400	Mar 4, 2026	EVP, CFO and Treasurer, issuer-wide
32	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	234,862	0.46%	+8,794	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
33	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	227,905	0.45%	-4,200	Jun 30, 2026	carried, not yet filed for the newest quarter
34	JTC Employer Solutions Trustee Ltd 13F CIK 1875645 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	180,000	0.35%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
35	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	157,381	0.31%	+21,548	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Alta Fundamental Advisers LLC 13F CIK 1641604 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	148,662	0.29%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	148,421	0.29%	+5,769	Jun 30, 2026	carried, not yet filed for the newest quarter
38	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	146,561	0.29%	+27,706	Jun 30, 2026	carried, not yet filed for the newest quarter
38.1	T. Rowe Price Total Equity Market Index Fund Fund S000002091 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	32,082	0.06%	0	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
38.2	T. Rowe Price Extended Equity Market Index Fund Fund S000002090 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	22,000	0.04%	0	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
38.3	T. Rowe Price Small-Cap Index Fund Fund S000051327 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	6,041	0.01%	0	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
39	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	140,983	0.28%	+115,254	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	134,435	0.26%	+20,958	Jun 30, 2026	carried, not yet filed for the newest quarter
40.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	61,293	0.12%	+6,945	Jul 31, 2026	TIAA-CREF Funds, not summed
40.2	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	54,244	0.11%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
40.3	TIAA Separate Account VA-1 - Stock Index Account Fund S000005098 · Registered fund · Jun 30, 2026 TIAA Separate Account VA-1, not summed	2,049	0.00%	0	Jun 30, 2026	TIAA Separate Account VA-1, not summed
40.4	Nuveen Life Stock Index Fund Fund S000005094 · Registered fund · Jun 30, 2026 TIAA-CREF Life Funds, not summed	1,028	0.00%	0	Jun 30, 2026	TIAA-CREF Life Funds, not summed
41	GROUP ONE TRADING LLC 13F CIK 932540 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	129,044	0.25%	+56,907	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Quantinno Capital Management LP 13F CIK 1759654 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	127,844	0.25%	+33,080	Jun 30, 2026	carried, not yet filed for the newest quarter
43	GILBERT STEVEN J Insider CIK 1105209 · May 12, 2026 Director, issuer-wide	125,423	0.25%	+16,181	May 12, 2026	Director, issuer-wide
44	DEWBREY DIANE L Insider CIK 1200125 · May 12, 2026 Director, issuer-wide	121,198	0.24%	+16,181	May 12, 2026	Director, issuer-wide
45	BLUEFIN CAPITAL MANAGEMENT, LLC 13F CIK 1144208 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	115,006	0.23%	+18,000	Jun 30, 2026	carried, not yet filed for the newest quarter
46	STATE OF WISCONSIN INVESTMENT BOARD 13F CIK 854157 · Pension or benefit plan · Jun 30, 2026 carried, not yet filed for the newest quarter	113,013	0.22%	+22,300	Jun 30, 2026	carried, not yet filed for the newest quarter
47	VAUGHAN RICHARD C Insider CIK 1228948 · May 12, 2026 Director, issuer-wide	103,055	0.20%	+16,181	May 12, 2026	Director, issuer-wide
48	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	101,858	0.20%	-75,844	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Freestone Capital Holdings, LLC 13F CIK 1470876 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	99,763	0.20%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
50	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	96,934	0.19%	-212,802	Jun 30, 2026	carried, not yet filed for the newest quarter

4 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 193 holders

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Key facts CIK 814585 CUSIP 55262C100 13F (30d) 27 filings 24 filers Visit website Investor relations