Siga Technologies Inc (SIGA) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

71,604,956Shares Outstanding

36,663,891Shares held by institutions

$156,554,815Value of institutional holdings

51.20%Institutional ownership %

6.94%Shares Changed QoQ

192No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Siga Technologies Inc (NASDAQ:SIGA) has 192 institutional investors that have filed 13F reports for the period ending December 2025.

These investors held 50.2% of outstanding shares in December 2025, up from 48.6% in September 2025.
They increased total shares held in SIGA by 5.39% quarter over quarter, and investors in Siga Technologies increased 13.61% from a year ago.
During the quarter, 97 of these 192 funds increased positions in SIGA, 60 reduced exposure, and 35 held steady.
In total, institutional investors held 35.97Mn shares in Siga Technologies as of December 2025, up by 1.84Mn shares quarter on quarter, and up 342.1K shares year over year.
STRS OHIO is the top holder of Siga Technologies as of December 31, 2025, with 109.9K shares representing 0.15% of outstanding stock.
Leading buyers of Siga Technologies shares for the quarter ending December 2025 were WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (66.67K), STRS OHIO (19.8K), OneAscent Financial Services LLC (10.13K), EXCHANGE TRADED CONCEPTS, LLC (6.99K), SIGNATUREFD, LLC (1.72K).
Leading sellers of Siga Technologies shares for the quarter ending December 2025 were SummerHaven Investment Management, LLC (21.68K), October Effect Ltd (2.8K), Farther Finance Advisors, LLC (2.62K), Versant Capital Management, Inc (1.13K), Sterling Capital Management LLC (305).
According to Business Quant data, leading holders of SIGA for December 2025 are STRS OHIO (109.9K), SummerHaven Investment Management, LLC (101.02K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (66.67K), JAMES INVESTMENT RESEARCH, INC. (53.55K), DAVENPORT & Co LLC (50.0K), EXCHANGE TRADED CONCEPTS, LLC (46.88K), WASHINGTON GROWTH STRATEGIES LLC (26.22K), Significant Wealth Partners LLC (23.13K), October Effect Ltd (20.3K), Onyx Bridge Wealth Group LLC (13.0K).

192 Institutional Holders

36,663,891 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	3,589,270	63,261	1.79%	$21,930,440.00
VANGUARD GROUP INC	31 Dec, 2025	2,723,750	67,808	2.55%	$16,642,113.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,536,794	104,414	4.29%	$15,500,185.00
AltraVue Capital, LLC	31 Dec, 2025	2,408,824	-8,690	-0.36%	$14,717,914.00
Goldman Sachs Group Inc	31 Dec, 2025	1,294,292	762,152	143.22%	$7,908,124.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	1,165,489	-67,243	-5.45%	$7,121,141.00
State Street Corp	31 Dec, 2025	1,075,570	41,716	4.03%	$6,571,733.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,043,083	-82,080	-7.29%	$6,373,237.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,025,080	190,397	22.81%	$6,263,239.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,004,734	6,512	0.65%	$6,140,303.00
JUPITER ASSET MANAGEMENT LTD	31 Dec, 2025	990,648	0	0.00%	$6,052,859.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	872,795	524,714	150.74%	$5,332,778.00
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	31 Dec, 2025	819,447	-8,140	-0.98%	$5,006,821.00
Uniplan Investment Counsel, Inc.	31 Dec, 2025	774,154	377,635	95.24%	$4,730,086.00
FIRST WILSHIRE SECURITIES MANAGEMENT INC	31 Dec, 2025	684,053	-3,844	-0.56%	$4,179,564.00
Bank Of America Corp /De/	31 Dec, 2025	641,421	-396,121	-38.18%	$3,919,082.00
CSM Advisors, LLC	31 Dec, 2025	627,870	31,358	5.26%	$3,835.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	611,019	-69,203	-10.17%	$3,733,326.00
Legato Capital Management LLC	31 Dec, 2025	580,545	68,506	13.38%	$3,547,130.00
NEW YORK STATE COMMON RETIREMENT FUND	31 Dec, 2025	570,561	0	0.00%	$3,486,128.00

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