Among active 13F managers last quarter, 12 opened and 12 added, while 9 reduced; the largest holder to move was Millennium Management LLC (new position). Over the last 180 days, 1 insider bought and none sold, a net +$50K in open-market trades.
Funds lean in and no leg opposes.
98 tracked 13F filers disclose a position in ATYR as of the latest SEC 13F filings, a combined $26.4M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Federated Hermes, Inc. | 10.5M | $8.2M | —Held | Q1 2026 | |
| 2 | UBS Group AG | 3.9M | $3.0M | ▲+138% Added · +2.2M sh | Q1 2026 | |
| 3 | Vanguard Capital Management LLC | 3.8M | $2.3M | ▼−0.1% Reduced · −4K sh | Q2 2026 | |
| 4 | FMR LLC | 2.5M | $1.5M | ▼−83% Reduced · −12.2M sh | Q2 2026 | |
| 5 | BlackRock, Inc. | 1.8M | $1.1M | ▼−72% Reduced · −4.6M sh | Q2 2026 | |
| 6 | Kalehua Capital Management LLC | 1.8M | $1.1M | ▲New +1.8M sh | Q2 2026 | |
| 7 | Millennium Management LLC | 1.6M | $1.3M | ▲New +1.6M sh | Q1 2026 | |
| 8 | Citadel Advisors LLC | 1.2M | $741K | ▲26× Added · +1.2M sh | Q2 2026 | |
| 9 | Morgan Stanley | 1.2M | $956K | ▼−13% Reduced · −178K sh | Q1 2026 | |
| 10 | Geode Capital Management, LLC | 1.2M | $703K | ▼−51% Reduced · −1.2M sh | Q2 2026 | |
| 11 | Two Sigma Investments, LP | 1.1M | $893K | ▲+152% Added · +690K sh | Q1 2026 | |
| 12 | Susquehanna International Group, LLP | 867K | $676K | ▲+13% Added · +102K sh | Q1 2026 | |
| 13 | Northern Trust Corp | 711K | $555K | ▲+1.3% Added · +9K sh | Q1 2026 | |
| 14 | Vanguard Fiduciary Trust Co | 576K | $344K | ▼−12% Reduced · −76K sh | Q2 2026 | |
| 15 | AQR Capital Management LLC | 496K | $387K | ▼−36% Reduced · −274K sh | Q1 2026 | |
| 16 | State Street Corp | 495K | $295K | ▼−72% Reduced · −1.3M sh | Q2 2026 | |
| 17 | Bank Of America Corp | 304K | $237K | ▲+140% Added · +177K sh | Q1 2026 | |
| 18 | Goldman Sachs Group Inc | 283K | $221K | ▼−18% Reduced · −62K sh | Q1 2026 | |
| 19 | Nuveen, LLC | 229K | $179K | ▲+0.6% Added · +1K sh | Q1 2026 | |
| 20 | Charles Schwab Investment Management Inc | 211K | $164K | ▼−5.0% Reduced · −11K sh | Q1 2026 | |
| 21 | Bank of New York Mellon Corp | 194K | $151K | ▼~0% Reduced · −1 sh | Q1 2026 | |
| 22 | Group One Trading LLC | 139K | $83K | ▼−25% Reduced · −45K sh | Q2 2026 | |
| 23 | Marshall Wace, LLP | 138K | $108K | ▲New +138K sh | Q1 2026 | |
| 24 | XTX Topco Ltd | 111K | $87K | ▲+40% Added · +32K sh | Q1 2026 | |
| 25 | Deutsche Bank AG | 103K | $81K | ▼−14% Reduced · −17K 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, 12 funds opened a new position in ATYR and 12 added to an existing one, while 9 reduced. 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 | Their position there |
|---|---|---|
| Nvidia CorpNVDA | 41 funds | $122.7B |
| Eli Lilly & CoLLY | 41 funds | $25.7B |
| JPMorgan Chase & CoJPM | 41 funds | $20.5B |
| Bank Of America CorpBAC | 41 funds | $9.9B |
| Merck & Co. Inc.MRK | 41 funds | $9.7B |
| Unitedhealth Group IncUNH | 41 funds | $9.4B |
| Intuitive Surgical IncISRG | 41 funds | $8.2B |
| Apple IncAAPL | 40 funds | $94.1B |
| Microsoft CorpMSFT | 40 funds | $83.3B |
| Amazon.com IncAMZN | 40 funds | $65.8B |
| Broadcom IncAVGO | 40 funds | $48.3B |
| Alphabet Inc-CL AGOOGL | 40 funds | $46.0B |
Ranked by how many of ATYR's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ATYR.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 27, 2026 | Schimmel Paul | Director | Buy (P) | 100K | $50K |
| Feb 4, 2026 | Broadfoot Jill Marie | Chief Financial Officer | Sell (S) | 2K | $2K |
| Feb 4, 2026 | Shukla Sanjay | President and CEO, Director | Sell (S) | 4K | $4K |
| Feb 4, 2026 | Denyes Nancy | General Counsel | Sell (S) | 1K | $1K |
| Oct 9, 2025 | Schimmel Paul | Director | Buy (P) | 318K | $299K |
| Oct 8, 2025 | Schimmel Paul | Director | Buy (P) | 682K | $614K |
| Mar 17, 2025 | Gross Jane A | Director | Buy (P) | 4K | $15K |
| Feb 4, 2025 | Broadfoot Jill Marie | Chief Financial Officer | Sell (S) | 1K | $5K |
| Feb 4, 2025 | Denyes Nancy | General Counsel | Sell (S) | 899 | $3K |
| Jul 24, 2024 | Schimmel Paul | Director | Buy (P) | 52K | $101K |
| Jul 23, 2024 | Schimmel Paul | Director | Buy (P) | 7K | $12K |
| Jul 22, 2024 | Schimmel Paul | Director | Buy (P) | 41K | $71K |
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 30 | 33 | – |
Insiders Form 4 open-market | 1 | 0 | +$50K |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for ATYR
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/ATYR/capital-change-brief"
Use Arkolith's capital_change_brief for ATYR. 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 ATYR. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.