SIGA Technologies
SIGA
183 hedge funds and large institutions have $184M invested in SIGA Technologies in 2026 Q1 according to their latest regulatory filings, with 27 funds opening new positions, 65 increasing their positions, 69 reducing their positions, and 39 closing their positions.
6% less repeat investments, than reductions
Existing positions increased: 65 | Existing positions reduced: 69
2.05% less ownership
Funds ownership: 50.05% → 48% (-2.1%)
9% less funds holding
Funds holding: 200 → 183 (-17)
16% less capital invested
Capital invested by funds: $219M → $184M (-$35.2M)
31% less first-time investments, than exits
New positions opened: 27 | Existing positions closed: 39
81% less call options, than puts
Call options by funds: $11K | Put options by funds: $57K
Top Buyers
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$3.12M |
| 2 |
Two Sigma Investments
New York
|
+$2.64M |
| 3 |
HF
HRT Financial
New York
|
+$2.25M |
| 4 |
AQR Capital Management
Greenwich,
Connecticut
|
+$2.16M |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$1.94M |
Top Sellers
| 1 |
JAM
Jupiter Asset Management
London,
United Kingdom
|
-$6.05M |
| 2 |
CA
CSM Advisors
Warrendale,
Pennsylvania
|
-$3.83M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$2.11M |
| 4 |
Morgan Stanley
New York
|
-$1.44M |
| 5 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$1.27M |
SIGA Hedge Fund Activity: Q1 2026 in Review
183 of the 8,125 institutional investors tracked by Wall St. Rank reported a position in SIGA Technologies (SIGA) for Q1 2026, worth a combined $184M — down 16% from $219M a quarter earlier.
Sellers outnumbered buyers: 39 funds closed out of SIGA and 27 opened new positions — a net loss of 12 holders — while 69 trimmed existing stakes and 65 added.
The largest buyer was Arrowstreet Capital, adding an estimated $3.12M. The largest seller was Jupiter Asset Management, exiting entirely with an estimated $6.05M sold.
- 183 institutional investors held SIGA Technologies (SIGA) as of Q1 2026, down from 200 in Q4 2025.
- Funds reported $184M of SIGA Technologies stock for Q1 2026, down 16% quarter-over-quarter.
- 27 funds opened new SIGA Technologies positions in Q1 2026 and 39 closed out, a net change of -12 holders.
- The largest SIGA Technologies buyer in Q1 2026 was Arrowstreet Capital, an estimated $3.12M added.
- The largest SIGA Technologies seller in Q1 2026 was Jupiter Asset Management, an estimated $6.05M sold.
Based on aggregated 13F filings for Q1 2026.