MDAI · Spectral AI, Inc. · Shareholders & Ownership

$1.45 -0.05 (-3.33%)

Market Cap

$48.28M

32.18M

Volume · Oct 23 129.79K Avg daily vol (3M) 142.23K

Every disclosed holder of MDAI 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 MDAI

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)	52	6,908,838	21.47%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	4	5,793,455	18.00%	Yes
Remaining	—	19,482,635	60.53%	Rest
Registered funds (N-PORT, not summed)	10	1,565,128	4.86%	No

Shares outstanding: 32,184,928, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

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 MDAI

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	DiMaio John Michael Insider CIK 1993856 · Sep 28, 2026 Director, issuer-wide, not summed	2,922,847	9.08%	+32,000	Sep 28, 2026	Director, issuer-wide, not summed
1.1	John Michael DiMaio 13D CIK 1993856 · Unknown · Feb 7, 2024	2,485,908	7.72%	—	Feb 7, 2024
2	Hudson Bay Capital Management LP 13G CIK 1393825 · Registered investment adviser · Mar 31, 2026 Rule 13d-1(b), qualified institution	1,671,416	5.19%	-795,204	Mar 31, 2026	Rule 13d-1(b), qualified institution
3	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	994,410	3.09%	+268,120	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Highlander Partners, L.P. 13F CIK 1903866 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	900,000	2.80%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
5	Laurence E. Hirsch 13G CIK 1016213 · Unknown · Aug 13, 2025 Rule 13d-1(c), passive investor	900,000	2.80%	0	Aug 13, 2025	Rule 13d-1(c), passive investor
6	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	827,454	2.57%	+827,454	Jun 30, 2026	carried, not yet filed for the newest quarter
7	Erich Spangenberg 13D CIK 1331984 · Unknown · May 28, 2025	736,131	2.29%	-4,000,000	May 28, 2025
8	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	733,170	2.28%	+209,540	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
9	LMR Partners LLP 13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	503,694	1.57%	+196,185	Jun 30, 2026	carried, not yet filed for the newest quarter
9.1	LMR Partners LLP 13G CIK 1578621 · Exempt reporting adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,106,358	6.54%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
10	ARISTEIA CAPITAL, L.L.C. 13F CIK 1080171 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	359,943	1.12%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
11	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	287,000	0.89%	+88,000	Jun 30, 2026	carried, not yet filed for the newest quarter
11.1	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	287,000	0.89%	+88,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
12	Capone Vincent S. Insider CIK 1992121 · Apr 24, 2026 Director, issuer-wide, not summed	286,450	0.89%	+100,000	Apr 24, 2026	Director, issuer-wide, not summed
13	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	247,504	0.77%	+44,844	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
14	Clear Street Group Inc. 13F CIK 1881567 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	233,357	0.73%	-51,848	Jun 30, 2026	carried, not yet filed for the newest quarter
15	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	226,319	0.70%	+5,318	Jun 30, 2026	carried, not yet filed for the newest quarter
16	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	225,823	0.70%	+112,803	Jun 30, 2026	carried, not yet filed for the newest quarter
17	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	222,595	0.69%	-78,612	Jun 30, 2026	carried, not yet filed for the newest quarter
18	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	161,777	0.50%	+39,523	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	91,968	0.29%	+36,373	Jun 30, 2026	iShares Trust, not summed
19	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	160,701	0.50%	+160,701	Jun 30, 2026	carried, not yet filed for the newest quarter
20	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	142,664	0.44%	+868	Jun 30, 2026	carried, not yet filed for the newest quarter
21	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	123,629	0.38%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
22	UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO 13F CIK 1019231 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	121,711	0.38%	-88,777	Jun 30, 2026	carried, not yet filed for the newest quarter
23	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	117,931	0.37%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	116,021	0.36%	-87	May 31, 2026	Fidelity Concord Street Trust, not summed
25	Cotton Richard John Insider CIK 1992322 · May 18, 2026 Director, issuer-wide, not summed	111,477	0.35%	+14,700	May 18, 2026	Director, issuer-wide, not summed
26	MOORE CAPITAL MANAGEMENT, LP 13F CIK 1448574 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	100,000	0.31%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Oasis Management Co Ltd. 13F CIK 1317904 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	100,000	0.31%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Q Global Advisors, LLC 13F CIK 1469589 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	99,670	0.31%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Rathbones Group PLC 13F CIK 1351991 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	87,045	0.27%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Caption Management, LLC 13F CIK 1706766 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	83,537	0.26%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Calamos Advisors LLC 13F CIK 1316507 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	81,526	0.25%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
32	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	75,600	0.23%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	TPG GP A, LLC 13F CIK 1903793 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	74,999	0.23%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
34	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	66,666	0.21%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
35	TENOR CAPITAL MANAGEMENT Co., L.P. 13F CIK 1346554 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	66,666	0.21%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Forum Financial Management, LP 13F CIK 1911832 · Registered investment adviser · Sep 30, 2026	60,501	0.19%	0	Sep 30, 2026
37	Saba Capital Management, L.P. 13F CIK 1510281 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	59,763	0.19%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
38	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	50,547	0.16%	+18,449	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Virtu Financial LLC 13F CIK 1533964 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	40,979	0.13%	+40,979	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Empery Asset Management, LP 13F CIK 1469336 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	33,336	0.10%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
41	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	32,927	0.10%	+5,839	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	30,346	0.09%	+3,979	May 31, 2026	Fidelity Concord Street Trust, not summed
43	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	28,717	0.09%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
44	Sadagopan Deepak Insider CIK 1992074 · Apr 24, 2026 Director, issuer-wide, not summed	25,000	0.08%	—	Apr 24, 2026	Director, issuer-wide, not summed
45	Snyder Marion Ann Insider CIK 2131265 · Apr 24, 2026 Director, issuer-wide, not summed	25,000	0.08%	—	Apr 24, 2026	Director, issuer-wide, not summed
46	Mellish Martin C.B. Insider CIK 1992320 · Jun 4, 2025 Director, issuer-wide, not summed	24,398	0.08%	+5,000	Jun 4, 2025	Director, issuer-wide, not summed
47	HRT FINANCIAL LP 13F CIK 1475597 · Unknown · Jun 30, 2026 Classes MDAI, MDAIW, carried, not yet filed for the newest quarter	22,384	0.07%	+22,384	Jun 30, 2026	Classes MDAI, MDAIW, carried, not yet filed for the newest quarter
48	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	20,259	0.06%	+20,259	Jun 30, 2026	carried, not yet filed for the newest quarter
49	N.E.W. Advisory Services LLC 13F CIK 1803456 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	20,010	0.06%	+6,010	Jun 30, 2026	carried, not yet filed for the newest quarter
50	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	15,452	0.05%	+15,452	Jun 30, 2026	carried, not yet filed for the newest quarter

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 69 holders

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Key facts CIK 1833498 CUSIP 84757T105 13F (30d) 1 filings 1 filers Visit website Investor relations