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SIGA — SIGA TECHNOLOGIES INC

Reported value held$74.98M
Funds holding (latest)39
SectorHealth Care
Funds holding (Q2 2026)31
Institutional value$50.92M · 14.07M sh
New / Add / Cut / Exit1 / 18 / 11 / 2
Top-5 / Top-10 concentration63.6% / 80.6%
Institutional holdings change Accumulating +1.0% (+144.85K sh)
Institutional value change Down -31.4%

As of Q2 2026, 31 SEC-registered investment managers reported holding SIGA (SIGA TECHNOLOGIES INC) in their latest 13F filings, with a combined reported value of $50.92M across 14.07M shares. That is +1.0% by share count (+144.85K shares) versus the previous quarter, while reported value moved -31.4%. Ownership is concentrated: the five largest holders account for 63.6% of reported value and the top ten for 80.6%.

Compared with the prior quarter, 1 opened new positions, 18 added to existing stakes, 11 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

SIGA is classified in the Health Care sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 2.72M $16.64M 0.00% Add
BlackRock Inc history Q2 2026 4.19M $15.24M 0.00% Add
Arrowstreet Capital history Q2 2026 1.47M $5.37M 0.00% Reduce
Geode Capital Management history Q2 2026 1.42M $5.16M 0.00% Add
AQR Capital Management history Q2 2026 1.25M $4.54M 0.00% Add
Norges Bank Investment Management history Q4 2022 493.70K $3.63M 0.00% New
Millennium Management history Q2 2026 579.60K $2.11M 0.00% Add
Citadel Advisors history Q2 2026 551.25K $2.01M 0.00% Reduce
Royce & Associates history Q2 2026 551.01K $2.01M 0.02% Reduce
Bank of America Corp history Q2 2026 427.27K $1.56M 0.00% Reduce
Renaissance Technologies history Q2 2026 425.80K $1.55M 0.00% Reduce
Morgan Stanley history Q2 2026 421.01K $1.53M 0.00% Add
Goldman Sachs Group history Q2 2026 393.01K $1.43M 0.00% Reduce
Two Sigma Investments history Q2 2026 357.71K $1.30M 0.00% Reduce
Charles Schwab Investment Management history Q2 2026 349.82K $1.27M 0.00% Add
Northern Trust Corp history Q2 2026 333.83K $1.22M 0.00% Reduce
Marshall Wace history Q2 2024 134.28K $1.02M 0.00% Reduce
Janus Henderson Group history Q1 2026 187.52K $1.00M 0.00% Reduce
BNY Mellon history Q2 2026 265.68K $967.09K 0.00% Add
D. E. Shaw & Co history Q2 2026 264.90K $964.24K 0.00% Reduce

View all 39 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 4.02M 3.88M 3.80M 3.63M 3.53M 3.59M 3.49M 4.19M
Arrowstreet Capital 345.03K 233.13K 69.76K 33.42K 67.56K 642.41K 187.72K — — — 587.57K 600.74K 806.83K 431.77K 593.27K 578.78K 834.68K 1.03M 1.53M 1.47M
Geode Capital Management 829.46K 807.07K 813.99K 785.97K 782.36K 802.71K 834.57K 853.00K 968.51K 1.02M 1.04M 1.05M 1.11M 1.13M 1.05M 997.95K 998.22K 1.00M 1.32M 1.42M
AQR Capital Management — — — 12.10K 16.64K 15.79K 14.74K — — — — 12.99K 13.33K — — 19.36K 348.08K 872.79K 1.22M 1.25M
Millennium Management 63.38K 74.22K 39.19K 39.47K 23.74K 30.29K 187.50K 123.88K 49.39K 111.33K 135.21K 29.93K 527.57K 91.14K 34.43K 56.48K 256.34K 489.31K 466.32K 579.60K
Citadel Advisors 131.32K 120.30K 122.33K 315.60K 1.30M 322.19K 812.84K 979.22K 834.74K 433.46K 356.26K 390.49K 1.40M 1.35M 1.29M 1.43M 1.16M 1.07M 705.14K 551.25K
Royce & Associates 542.45K 541.51K 453.36K 128.68K 327.03K 664.28K 915.34K 975.36K 1.33M 1.76M 1.07M 866.26K 858.81K 844.32K 758.68K 642.58K 680.22K 611.02K 667.65K 551.01K
Bank of America Corp 36.33K 79.36K 75.92K 18.80K 96.36K 178.04K 653.34K 68.29K 414.21K 290.43K 441.02K 266.55K 394.90K 27.22K 166.86K 405.73K 518.77K 641.42K 484.67K 427.27K
Renaissance Technologies 616.69K 893.50K 685.31K 637.51K 2.35M 1.05M 704.64K 56.14K 19.40K — 18.44K 92.94K 123.60K 417.44K 627.54K 598.91K 308.50K 378.10K 475.01K 425.80K
Morgan Stanley 178.55K 110.31K 90.62K 245.53K 734.55K 1.02M 1.02M 158.64K 172.25K 402.87K 583.14K 343.84K 323.49K 251.65K 292.86K 521.87K 656.96K 494.46K 263.33K 421.01K
Goldman Sachs Group 290.73K 292.00K 126.12K 101.14K 187.85K 375.22K 218.42K 2.52M 2.31M 1.65M 1.53M 854.35K 256.82K 341.59K 283.20K 521.61K 532.14K 647.15K 624.90K 393.01K
Two Sigma Investments — — — 668.20K 994.04K 769.41K 80.84K — — — — — — — 27.74K 113.73K — 10.40K 433.66K 357.71K
Charles Schwab Investment Management 122.53K 122.53K 126.33K 120.58K 304.44K 308.71K 311.28K 305.81K 320.59K 310.85K 331.50K 483.16K 507.26K 462.19K 360.78K 335.60K 349.38K 316.70K 340.32K 349.82K
Northern Trust Corp 478.76K 455.89K 435.97K 447.59K 445.13K 438.17K 467.96K 469.54K 465.62K 490.23K 483.25K 463.73K 438.46K 464.81K 469.59K 403.37K 392.88K 375.85K 340.18K 333.83K
BNY Mellon 264.83K 220.72K 225.28K 213.11K 226.16K 287.28K 281.10K 279.79K 282.82K 212.49K 179.05K 194.82K 190.04K 289.71K 290.43K 291.48K 270.33K 254.17K 256.80K 265.68K
D. E. Shaw & Co 10.04K 147.34K 144.21K 3.22M 2.20M 1.49M 1.10M 840.63K 795.68K 711.73K 548.24K 1.07M 680.51K 592.66K 547.86K 433.02K 499.75K 554.57K 456.38K 264.90K
UBS Group AG — 20.98K 3.53K 4.60K 372 9.90K 31.71K 37.45K 28.34K 55.31K 64.89K 22.31K 32.30K 62.61K 45.84K 34.76K 173.01K 22.40K 104.06K 182.00K
Invesco Ltd 71.79K 79.56K 88.80K 219.49K 100.24K 100.88K 112.67K 86.21K 87.91K 84.17K 184.27K 186.98K 133.75K 121.28K 120.77K 109.63K 105.28K 113.44K 111.52K 113.09K
Prudential Financial — — — — — 349.42K 575.17K 11.67K — — — — 111.57K 188.97K — — 83.39K 96.89K 100.59K 104.19K
CPP Investments — — — — — — — — — — — — — — — — — 75.00K 69.40K 69.40K

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