Company · Ownership research

SIGA TECHNOLOGIES INC SIGA

CIK 0001010086 · CUSIP 826917106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 826917106 (SIGA), not CUSIP 826917906 (SIGA), CUSIP 826917956 (SIGA), and does not merge CUSIPs.

This page lists the top 20 of 200 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$21.93M 3,589,270 shares	0.00%	+63.26K(+1.80%)Added	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$16.64M 2,723,750 shares	0.00%	+67.81K(+2.60%)Added	SEC filing ↗ Jan 29, 2026	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$15.50M 2,536,794 shares	0.00%	+104.41K(+4.30%)Added	SEC filing ↗ Feb 12, 2026	▾
04	AltraVue Capital, LLC CIK 1740837 · View history	$14.72M 2,408,824 shares	1.21%	-8.69K(-0.40%)Reduced	SEC filing ↗ Feb 11, 2026	▾
05	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$7.12M 1,165,489 shares	0.00%	-67.24K(-5.50%)Reduced	SEC filing ↗ Feb 13, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$6.57M 1,075,570 shares	0.00%	+41.72K(+4.00%)Added	SEC filing ↗ Feb 13, 2026	▾
07	CITADEL ADVISORS LLC CIK 1423053 · View history	$6.37M 1,043,083 shares	0.00%	-82.08K(-7.30%)Reduced	SEC filing ↗ Feb 17, 2026	▾
08	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$6.26M 1,025,080 shares	0.00%	+190.40K(+22.80%)Added	SEC filing ↗ Feb 13, 2026	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$6.14M 1,004,734 shares	0.00%	+6.51K(+0.70%)Added	SEC filing ↗ Feb 9, 2026	▾
10	JUPITER ASSET MANAGEMENT LTD CIK 1215838 · View history	$6.05M 990,648 shares	0.05%	0(0.00%)Unchanged	SEC filing ↗ Feb 10, 2026	▾
11	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$5.33M 872,795 shares	0.00%	+524.71K(+150.70%)Added	SEC filing ↗ Feb 17, 2026	▾
12	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC CIK 1164833 · View history	$5.01M 819,447 shares	0.01%	-8.14K(-1.00%)Reduced	SEC filing ↗ Feb 17, 2026	▾
13	FIRST WILSHIRE SECURITIES MANAGEMENT INC CIK 732847 · View history	$4.18M 684,053 shares	1.05%	-3.84K(-0.60%)Reduced	SEC filing ↗ Feb 12, 2026	▾
14	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$3.95M 647,146 shares	0.00%	+115.01K(+21.60%)Added	SEC filing ↗ Mar 25, 2026	▾
15	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$3.92M 641,421 shares	0.00%	+122.65K(+23.60%)Added	SEC filing ↗ Feb 17, 2026	▾
16	CSM Advisors, LLC CIK 1863523 · View history	$3.83M 627,870 shares	0.10%	+31.36K(+5.30%)Added	SEC filing ↗ Feb 11, 2026	▾
17	ROYCE & ASSOCIATES LP CIK 906304 · View history	$3.73M 611,019 shares	0.04%	-69.20K(-10.20%)Reduced	SEC filing ↗ Feb 9, 2026	▾
18	Legato Capital Management LLC CIK 1442641 · View history	$3.55M 580,545 shares	0.31%	+68.51K(+13.40%)Added	SEC filing ↗ Feb 6, 2026	▾
19	NEW YORK STATE COMMON RETIREMENT FUND CIK 810265 · View history	$3.49M 570,561 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Feb 12, 2026	▾
20	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$3.39M 554,571 shares	0.00%	+54.82K(+11.00%)Added	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 200 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

200

Cancelled or null records excluded

Disclosed shares

35,828,717

Not deduplicated across managers

Disclosed value

$219.09M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SIGA TECHNOLOGIES INC · Q4 2025

Explore all 200 reporting institutions.

This page includes 20 of 200 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 200 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"826917106","quarter":"2025Q4","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.