SIGA · Siga Technologies Inc · Shareholders & Ownership

$3.15 +0.03 (+0.96%)

Russell 2000 member Rebalance outlook locked

Market Cap

$224.17M

71.85M

Volume · Oct 22 202.56K Avg daily vol (3M) 715.38K

Every disclosed holder of SIGA 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 SIGA

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)	163	34,809,860	48.45%	Yes
Insiders (Forms 3, 4, 5)	11	1,290,667	1.80%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	35,749,189	49.76%	Rest
Registered funds (N-PORT, not summed)	166	12,519,105	17.42%	No

Shares outstanding: 71,849,716, 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 SIGA

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	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	4,186,282	5.83%	+692,089	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,132,826	1.58%	+130,103	Jun 30, 2026	iShares Trust, not summed
1.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	394,114	0.55%	+322,889	Jun 30, 2026	iShares Trust, not summed
1.3	iShares US Small Cap Value Factor ETF Fund S000069740 · Registered fund · Jun 30, 2026 iShares Trust, not summed	165,589	0.23%	—	Jun 30, 2026	iShares Trust, not summed
1.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	142,594	0.20%	+39,269	Jun 30, 2026	iShares Trust, not summed
1.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	70,201	0.10%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
2	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,719,568	3.79%	+16,844	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	U.S. Targeted Value Portfolio Fund S000000970 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	456,791	0.64%	-63,614	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
2.2	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	314,574	0.44%	+74,561	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
2.3	Dimensional U.S. Targeted Value ETF Fund S000070901 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	303,452	0.42%	-119,335	Jul 31, 2026	Dimensional ETF Trust, not summed
2.4	U.S. SMALL CAP VALUE PORTFOLIO Fund S000000987 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	273,051	0.38%	+160,949	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
2.5	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	255,849	0.36%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
3	AltraVue Capital, LLC 13F CIK 1740837 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,327,144	3.24%	-104,880	Jun 30, 2026	carried, not yet filed for the newest quarter
4	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,712,701	2.38%	-1,679	Jun 30, 2026	carried, not yet filed for the newest quarter
5	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,506,065	2.10%	+188,281	Jun 30, 2026	carried, not yet filed for the newest quarter
6	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,474,817	2.05%	-51,143	Jun 30, 2026	carried, not yet filed for the newest quarter
7	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,417,092	1.97%	+101,547	Jun 30, 2026	carried, not yet filed for the newest quarter
8	FIRST WILSHIRE SECURITIES MANAGEMENT INC 13F CIK 732847 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,339,883	1.86%	+449,385	Jun 30, 2026	carried, not yet filed for the newest quarter
9	Avantis U.S. Small Cap Value ETF Fund S000066459 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	1,253,944	1.75%	+157,695	May 31, 2026	American Century ETF Trust, not summed
10	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,245,992	1.73%	+26,315	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,206,157	1.68%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
12	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,133,989	1.58%	+122,051	Jun 30, 2026	carried, not yet filed for the newest quarter
12.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	16,500	0.02%	+3,500	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
12.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	1,065	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
13	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 13F CIK 1164833 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	914,047	1.27%	+87,000	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	Hotchkis and Wiley Small Cap Diversified Value Fund Fund S000045868 · Registered fund · Jun 30, 2026 HOTCHKIS & WILEY FUNDS/DE/, not summed	240,100	0.33%	+21,300	Jun 30, 2026	HOTCHKIS & WILEY FUNDS/DE/, not summed
14	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	740,910	1.03%	+325,806	Jun 30, 2026	carried, not yet filed for the newest quarter
15	NEW YORK STATE COMMON RETIREMENT FUND 13F CIK 810265 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	590,761	0.82%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
16	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	579,599	0.81%	+113,275	Jun 30, 2026	carried, not yet filed for the newest quarter
17	JACOBS LEVY EQUITY MANAGEMENT, INC 13F CIK 884414 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	566,863	0.79%	+275,017	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Uniplan Investment Counsel, Inc. 13F CIK 1520710 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	560,353	0.78%	+188,940	Jun 30, 2026	carried, not yet filed for the newest quarter
19	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	551,246	0.77%	-153,891	Jun 30, 2026	carried, not yet filed for the newest quarter
20	ROYCE & ASSOCIATES LP 13F CIK 906304 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	551,010	0.77%	-116,636	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	Royce Small-Cap Fund Fund S000009507 · Registered fund · Jun 30, 2026 ROYCE FUND, not summed	328,264	0.46%	-44,980	Jun 30, 2026	ROYCE FUND, not summed
20.2	Royce Capital Fund - Small-Cap Portfolio Fund S000009497 · Registered fund · Jun 30, 2026 ROYCE CAPITAL FUND, not summed	122,724	0.17%	-48,134	Jun 30, 2026	ROYCE CAPITAL FUND, not summed
20.3	Royce Small-Cap Value Fund Fund S000009516 · Registered fund · Jun 30, 2026 ROYCE FUND, not summed	75,727	0.11%	-23,522	Jun 30, 2026	ROYCE FUND, not summed
21	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	549,697	0.77%	-37,277	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Legato Capital Management LLC 13F CIK 1442641 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	512,039	0.71%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	464,304	0.65%	-1,679	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
24	LSV ASSET MANAGEMENT 13F CIK 1050470 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	461,307	0.64%	-77,323	Jun 30, 2026	carried, not yet filed for the newest quarter
25	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	427,275	0.59%	-57,397	Jun 30, 2026	carried, not yet filed for the newest quarter
26	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	425,800	0.59%	-49,213	Jun 30, 2026	carried, not yet filed for the newest quarter
27	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	421,009	0.59%	+157,674	Jun 30, 2026	carried, not yet filed for the newest quarter
28	DENALI ADVISORS LLC 13F CIK 1142941 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	414,436	0.58%	-22,451	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	393,007	0.55%	-231,896	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · May 31, 2026 Goldman Sachs ETF Trust, not summed	54,001	0.08%	+717	May 31, 2026	Goldman Sachs ETF Trust, not summed
29.2	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	36,027	0.05%	+8,594	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
30	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	357,715	0.50%	-75,946	Jun 30, 2026	carried, not yet filed for the newest quarter
31	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	349,820	0.49%	+9,499	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	194,435	0.27%	-3,052	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
31.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	103,669	0.14%	+12,627	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
31.3	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	34,489	0.05%	+12,705	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
31.4	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	17,097	0.02%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
32	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	333,833	0.46%	-6,342	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	18,351	0.03%	+1,816	Jun 30, 2026	Northern Funds, not summed
32.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,210	0.01%	-180	Jun 30, 2026	Northern Funds, not summed
33	Luckshire Daniel J Insider CIK 1512677 · Mar 13, 2026 Executive VP & CFO, issuer-wide	280,493	0.39%	+5,429	Mar 13, 2026	Executive VP & CFO, issuer-wide
34	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	277,358	0.39%	+2,180	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Creative Planning 13F CIK 1540235 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	275,528	0.38%	+106,973	Jun 30, 2026	carried, not yet filed for the newest quarter
36	SEGALL BRYANT & HAMILL, LLC 13F CIK 1006378 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	273,522	0.38%	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	265,684	0.37%	+8,881	Jun 30, 2026	carried, not yet filed for the newest quarter
38	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	264,900	0.37%	-191,485	Jun 30, 2026	carried, not yet filed for the newest quarter
39	VICTORY CAPITAL MANAGEMENT INC 13F CIK 1040188 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	260,062	0.36%	-116,509	Jun 30, 2026	carried, not yet filed for the newest quarter
39.1	Victory Small Cap Stock Fund Fund S000012914 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	245,315	0.34%	0	Jul 31, 2026	Victory Portfolios III, not summed
39.2	Victory Cornerstone Aggressive Fund Fund S000037226 · Registered fund · May 31, 2026 Victory Portfolios III, not summed	9,997	0.01%	-4,278	May 31, 2026	Victory Portfolios III, not summed
39.3	Victory Extended Market Index Fund Fund S000012941 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	4,750	0.01%	+103	Jul 31, 2026	Victory Portfolios III, not summed
40	Marshall Joseph W III Insider CIK 1458584 · Jun 9, 2026 Director, issuer-wide	246,523	0.34%	+16,881	Jun 9, 2026	Director, issuer-wide
41	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	211,807	0.29%	+7,783	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
42	Hruby Dennis E Insider CIK 1301548 · Mar 13, 2026 EVP & Chief Scientific Officer, issuer-wide	198,537	0.28%	+7,490	Mar 13, 2026	EVP & Chief Scientific Officer, issuer-wide
43	AMERIPRISE FINANCIAL INC 13F CIK 820027 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	193,368	0.27%	+9,831	Jun 30, 2026	carried, not yet filed for the newest quarter
44	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	181,998	0.25%	+77,936	Jun 30, 2026	carried, not yet filed for the newest quarter
45	STATE OF WISCONSIN INVESTMENT BOARD 13F CIK 854157 · Pension or benefit plan · Jun 30, 2026 carried, not yet filed for the newest quarter	164,400	0.23%	-13,400	Jun 30, 2026	carried, not yet filed for the newest quarter
46	DAVENPORT & Co LLC 13F CIK 887777 · Registered investment adviser · Sep 30, 2026	160,000	0.22%	+110,000	Sep 30, 2026
47	FIRST TRUST ADVISORS LP 13F CIK 1125816 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	159,509	0.22%	-846	Jun 30, 2026	carried, not yet filed for the newest quarter
47.1	First Trust Dow Jones Select MicroCap Index Fund Fund S000010772 · Registered fund · Jun 30, 2026 First Trust Exchange-Traded Fund, not summed	138,064	0.19%	+5,992	Jun 30, 2026	First Trust Exchange-Traded Fund, not summed
47.2	First Trust Active Factor Small Cap ETF Fund S000066790 · Registered fund · Aug 31, 2026 First Trust Exchange-Traded Fund VIII, not summed	24,496	0.03%	+4,641	Aug 31, 2026	First Trust Exchange-Traded Fund VIII, not summed
48	Man Group plc 13F CIK 1637460 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	157,348	0.22%	+62,835	Jun 30, 2026	carried, not yet filed for the newest quarter
49	LOS ANGELES CAPITAL MANAGEMENT LLC 13F CIK 1177206 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	145,060	0.20%	+75,978	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Multi-Manager Small Cap Equity Strategies Fund Fund S000036206 · Registered fund · May 31, 2026 COLUMBIA FUNDS SERIES TRUST I, not summed	139,046	0.19%	+15,118	May 31, 2026	COLUMBIA FUNDS SERIES TRUST I, not summed

15 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 260 holders

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Key facts CIK 1010086 CUSIP 826917106 13F (30d) 19 filings 19 filers Visit website Investor relations