156 tracked 13F filers disclose a position in SIGA as of the latest SEC 13F filings, a combined $167.5M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $18.7M | 3.5M | ▼−2.6% Reduced · −95K sh | Q1 2026 | |
| 2 | DIMENSIONAL FUND ADVISORS LP | $14.5M | 2.7M | ▲+6.5% Added · +166K sh | Q1 2026 | |
| 3 | AltraVue Capital, LLC | $22.1M | 2.4M | ▼−3.3% Reduced · −84K sh | Q3 2025 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $9.2M | 1.7M | →First observed position No prior filed position | Q1 2026 | |
| 5 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $8.2M | 1.5M | ▲+49% Added · +501K sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $5.2M | 1.4M | ▲+7.7% Added · +102K sh | Q2 2026 | |
| 7 | AMERICAN CENTURY COMPANIES INC | $7.1M | 1.3M | ▲+13% Added · +152K sh | Q1 2026 | |
| 8 | AQR CAPITAL MANAGEMENT LLC | $6.5M | 1.2M | ▲+40% Added · +347K sh | Q1 2026 | |
| 9 | STATE STREET CORP | $4.1M | 1.1M | ▲+12% Added · +122K sh | Q2 2026 | |
| 10 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $4.4M | 827K | ▲+0.9% Added · +8K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $3.8M | 705K | ▼−32% Reduced · −338K sh | Q1 2026 | |
| 12 | GOLDMAN SACHS GROUP INC | $3.3M | 625K | ▼−3.4% Reduced · −22K sh | Q1 2026 | |
| 13 | NEW YORK STATE COMMON RETIREMENT FUND | $3.2M | 591K | ▲+3.5% Added · +20K sh | Q1 2026 | |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | $3.1M | 587K | →First observed position No prior filed position | Q1 2026 | |
| 15 | Uniplan Investment Counsel, Inc. | $2.0M | 560K | ▲+51% Added · +189K sh | Q2 2026 | |
| 16 | Legato Capital Management LLC | $1.9M | 512K | —Held | Q2 2026 | |
| 17 | BANK OF AMERICA CORP /DE/ | $2.6M | 485K | ▼−24% Reduced · −157K sh | Q1 2026 | |
| 18 | RENAISSANCE TECHNOLOGIES LLC | $2.5M | 475K | ▲+26% Added · +97K sh | Q1 2026 | |
| 19 | MILLENNIUM MANAGEMENT LLC | $2.5M | 466K | ▼−4.7% Reduced · −23K sh | Q1 2026 | |
| 20 | D. E. Shaw & Co., Inc. | $2.4M | 456K | ▼−18% Reduced · −98K sh | Q1 2026 | |
| 21 | TWO SIGMA INVESTMENTS, LP | $2.3M | 434K | ▲42× Added · +423K sh | Q1 2026 | |
| 22 | Qube Research & Technologies Ltd | $2.2M | 415K | ▲+152% Added · +250K sh | Q1 2026 | |
| 23 | DENALI ADVISORS LLC | $1.5M | 414K | ▼−5.1% Reduced · −22K sh | Q2 2026 | |
| 24 | VICTORY CAPITAL MANAGEMENT INC | $2.0M | 377K | ▲+11% Added · +37K sh | Q1 2026 | |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.8M | 340K | ▲+7.5% Added · +24K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 6 funds opened a new position in SIGA and 29 added to an existing one, while 12 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| ALPHABET INC-CL AGOOGL | 81 funds | $95.1B |
| NVIDIA CORPNVDA | 79 funds | $247.6B |
| MICROSOFT CORPMSFT | 79 funds | $171.8B |
| ELI LILLY & COLLY | 78 funds | $49.5B |
| APPLE INCAAPL | 77 funds | $184.9B |
| AMAZON.COM INCAMZN | 77 funds | $122.9B |
| BROADCOM INCAVGO | 77 funds | $103.5B |
| META PLATFORMS INC-CLASS AMETA | 77 funds | $69.3B |
| VISA INC-CLASS A SHARESV | 77 funds | $38.1B |
| MICRON TECHNOLOGY INCMU | 77 funds | $24.8B |
| TESLA INCTSLA | 75 funds | $41.2B |
| UNITEDHEALTH GROUP INCUNH | 75 funds | $19.4B |
Ranked by how many of SIGA's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 9, 2021 | Antal James | Director | Sell (S) | 30K | $235K |
| Aug 27, 2020 | Antal James | Director | Sell (S) | 30K | $213K |
| Dec 9, 2019 | Luckshire Daniel J | Executive VP & CFO | Buy (P) | 5K | $22K |
| Dec 9, 2019 | Gomez Phillip Louis III | Chief Executive Officer, Director | Buy (P) | 10K | $44K |
| Dec 9, 2019 | Kane Julie | Director | Buy (P) | 3K | $11K |
| Dec 9, 2019 | SAVAS PAUL G | Director | Buy (P) | 20K | $87K |
| Aug 23, 2019 | SAVAS PAUL G | Director | Buy (P) | 10K | $50K |
| Aug 9, 2019 | SAVAS PAUL G | Director | Buy (P) | 10K | $51K |
| Jun 7, 2019 | Hruby Dennis E | VP & Chief Scientific Officer | Sell (S) | 16K | $89K |
| Jun 6, 2019 | Hruby Dennis E | VP & Chief Scientific Officer | Sell (S) | 17K | $95K |
| Jun 5, 2019 | Hruby Dennis E | VP & Chief Scientific Officer | Sell (S) | 17K | $97K |
| Jun 5, 2019 | Antal James | Director | Sell (S) | 30K | $171K |
Connected entities for SIGA
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/SIGA/capital-change-brief"
Use Arkolith's capital_change_brief for SIGA. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SIGA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.