Siga Technologies Inc (SIGA) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

71,604,956Shares Outstanding

36,663,891Shares held by institutions

$162,787,676Value 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 with active 13F positions as of December 2025.

Collectively, these holders controlled 50.2% of Siga Technologies's outstanding shares in December 2025, up from 48.6% in September 2025.
Their total shares held in SIGA increased 5.39% quarter over quarter, and separately, investors owning Siga Technologies increased 13.61% from a year ago.
Among the 192 funds, 97 bought more Siga Technologies shares, 60 sold down, and 35 held their ground.
Altogether, these fund groups held 35.97Mn shares in SIGA by December 2025, up by 1.84Mn shares quarter on quarter, and up 342.1K shares year over year.
BlackRock, Inc. is the top holder of Siga Technologies as of December 31, 2025, with 3.59Mn shares representing 5.01% of outstanding stock.
Leading buyers of Siga Technologies shares for the quarter ending December 2025 were Goldman Sachs Group Inc (762.15K), AQR CAPITAL MANAGEMENT LLC (524.71K), Uniplan Investment Counsel, Inc. (377.64K), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (244.85K), MILLENNIUM MANAGEMENT LLC (232.97K).
The largest sellers of Siga Technologies for the quarter ending December 2025 were Bank Of America Corp /De/ (396.12K), Jpmorgan Chase & Co (237.14K), Federated Hermes, Inc. (209.67K), Morgan Stanley (162.51K), UBS Group AG (150.62K).
Per Business Quant data, the top 10 holders of Siga Technologies for the quarter ending December 2025 are BlackRock, Inc. (3.59Mn), VANGUARD GROUP INC (2.72Mn), DIMENSIONAL FUND ADVISORS LP (2.54Mn), AltraVue Capital, LLC (2.41Mn), Goldman Sachs Group Inc (1.29Mn), AMERICAN CENTURY COMPANIES INC (1.17Mn), State Street Corp (1.08Mn), CITADEL ADVISORS LLC (1.04Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.03Mn), GEODE CAPITAL MANAGEMENT, LLC (1.0Mn).

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

1 - 20 of 192

Research Tools