ATYR — ATYR PHARMA INC
As of Q2 2026, 20 SEC-registered investment managers reported holding ATYR (ATYR PHARMA INC) in their latest 13F filings, with a combined reported value of $9.68M across 16.23M shares. That is -52.7% by share count (-18.06M shares) versus the previous quarter, while reported value moved -63.7%. Ownership is concentrated: the five largest holders account for 61.6% of reported value and the top ten for 92.8%.
Compared with the prior quarter, 2 opened new positions, 8 added to existing stakes, 10 trimmed, 8 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
ATYR 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.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Vanguard Group history | Q4 2025 | 4.96M | $3.89M | 0.00% | Reduce |
| AQR Capital Management history | Q2 2026 | 2.61M | $1.56M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | Q2 2026 | 2.47M | $1.47M | 0.00% | Reduce |
| BlackRock Inc history | Q2 2026 | 1.83M | $1.09M | 0.00% | Reduce |
| Citadel Advisors history | Q2 2026 | 1.55M | $924.00K | 0.00% | Add |
| UBS Group AG history | Q2 2026 | 1.53M | $914.10K | 0.00% | Reduce |
| Morgan Stanley history | Q2 2026 | 1.34M | $801.88K | 0.00% | Add |
| Two Sigma Investments history | Q2 2026 | 1.25M | $743.10K | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 1.18M | $702.73K | 0.00% | Reduce |
| Millennium Management history | Q2 2026 | 656.05K | $391.53K | 0.00% | Reduce |
| Goldman Sachs Group history | Q2 2026 | 641.21K | $382.67K | 0.00% | Add |
| Marshall Wace history | Q2 2026 | 368.12K | $220.87K | 0.00% | Add |
| Wellington Management Group history | Q3 2025 | 289.23K | $208.65K | 0.00% | Add |
| Charles Schwab Investment Management history | Q1 2026 | 210.74K | $164.38K | 0.00% | Reduce |
| BNY Mellon history | Q1 2026 | 193.53K | $150.95K | 0.00% | Hold |
| Northern Trust Corp history | Q2 2026 | 220.14K | $131.38K | 0.00% | Reduce |
| Bank of America Corp history | Q2 2026 | 207.47K | $123.65K | 0.00% | Reduce |
| Renaissance Technologies history | Q2 2026 | 165.22K | $98.60K | 0.00% | Add |
| JPMorgan Chase & Co history | Q2 2026 | 150.67K | $85.34K | 0.00% | New |
| Deutsche Bank AG history | Q1 2026 | 103.33K | $80.59K | 0.00% | Reduce |
New Positions (Q2 2026)
- JPMorgan Chase & Co 150.67K sh · $85.34K
- Point72 Asset Management 37.28K sh · $22.25K
Fully Exited (vs previous quarter)
- Charles Schwab Investment Management sold 210.74K sh · $164.38K
- BNY Mellon sold 193.53K sh · $150.95K
- Deutsche Bank AG sold 103.33K sh · $80.59K
- Invesco Ltd sold 46.35K sh · $36.16K
- Prudential Financial sold 14.66K sh · $11.44K
- Manulife Financial sold 10.55K sh · $8.23K
- Legal & General Investment Management America sold 7.92K sh · $6.18K
- T. Rowe Price Associates sold 46.13K sh · $36
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AQR Capital Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 769.82K | 496.02K | 2.61M |
| Fidelity Management & Research (FMR) | 4.06M | 4.17M | 4.17M | 4.21M | 4.29M | 4.35M | 7.97M | 8.14M | 8.56M | 8.78M | 8.92M | 10.35M | 11.37M | 12.10M | 12.89M | 13.35M | 14.70M | 14.70M | 14.71M | 2.47M |
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 1.40M | 1.53M | 1.59M | 5.78M | 6.47M | 6.55M | 6.44M | 1.83M |
| Citadel Advisors | 432.71K | 242.69K | 227.52K | 40.60K | 18.80K | 42.74K | 50.73K | 343.29K | 1.80M | 1.75M | 1.91M | 1.85M | 985.21K | 56.26K | 395.41K | 462.42K | 839.00K | 381.00K | 203.37K | 1.55M |
| UBS Group AG | — | 1.13K | 4.00K | 2.00K | 5.97K | — | 1.00K | — | 4.40K | 16.43K | 20.19K | — | — | 229.58K | 1.64M | 1.75M | 4.51M | 1.63M | 3.87M | 1.53M |
| Morgan Stanley | — | 20.46K | 72 | — | — | — | 2.28K | 2.46K | 2.40K | 15.92K | 19.72K | 1 | 1 | 41.21K | 262.68K | 259.97K | 710.34K | 1.40M | 1.23M | 1.34M |
| Two Sigma Investments | 541.72K | 486.99K | 235.24K | 178.56K | 180.01K | 162.54K | 125.62K | 420.59K | 92.33K | 26.54K | 10.09K | — | — | 21.63K | 22.24K | 31.33K | 211.00K | 454.44K | 1.14M | 1.25M |
| Geode Capital Management | 130.28K | 231.50K | 234.32K | 238.81K | 239.50K | 242.24K | 578.90K | 593.47K | 587.00K | 587.00K | 595.11K | 662.68K | 809.10K | 891.41K | 927.80K | 2.10M | 2.18M | 2.28M | 2.39M | 1.18M |
| Millennium Management | 23.97K | 19.66K | — | — | — | 68.11K | — | 352.10K | 84.31K | 125.23K | 62.48K | 106.43K | 108.66K | 367.99K | 1.60M | 1.65M | 1.89M | — | 1.64M | 656.05K |
| Goldman Sachs Group | — | 18.51K | — | — | — | — | — | — | — | 143.57K | 217.23K | — | — | 261.82K | 382.32K | 36.27K | 688.16K | 345.59K | 283.24K | 641.21K |
| Marshall Wace | 43.01K | 250.40K | 203.01K | 159.41K | 175.91K | 140.30K | 10.95K | — | — | — | 158.62K | — | 14.03K | — | 838.45K | 511.41K | — | — | 138.12K | 368.12K |
| Northern Trust Corp | 24.67K | 44.41K | 44.41K | 45.87K | 45.87K | 45.87K | 70.61K | 115.93K | 78.52K | 100.10K | 99.17K | 118.46K | 130.81K | 182.62K | 186.62K | 680.94K | 674.12K | 702.19K | 711.11K | 220.14K |
| Bank of America Corp | 382 | — | — | — | — | 64 | — | 1.48K | 116 | 148.76K | 156.18K | 117.04K | 620 | 91.22K | 288.31K | 42.35K | 177.67K | 126.70K | 303.56K | 207.47K |
| Renaissance Technologies | 179.66K | 127.16K | 110.86K | 150.82K | 187.53K | 166.08K | 157.66K | 526.36K | 505.99K | 877.97K | 1.27M | 1.29M | 1.15M | 574.46K | 479.95K | 518.36K | — | — | 40.52K | 165.22K |
| JPMorgan Chase & Co | — | 308.50K | — | 70.00K | — | 2.60K | 134.87K | 59.30K | 49.64K | 11.87K | 33.85K | 20.69K | 31.44K | 178.53K | — | 41.11K | 105.82K | 110.37K | — | 150.67K |
| Point72 Asset Management | — | — | — | — | — | — | — | — | — | — | — | — | — | 4.88M | 2.84M | 988.68K | — | — | — | 37.28K |
| Balyasny Asset Management | — | — | — | — | — | — | — | — | — | — | — | — | — | 44.31K | 227.14K | — | 500.00K | — | 10.33K | 23.02K |
| Wells Fargo & Co | 1.59K | 1.66K | 1.66K | 1.68K | 1.69K | 1.70K | 1.85K | 1.89K | 1.88K | 1.91K | 1.91K | 1.50K | 2.50K | 105.77K | 168.22K | 277.39K | 111.06K | 116.72K | 46.54K | 6.50K |
| PNC Financial Services | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 811 | 478 | 8.20K | 1.28K |
| Citigroup Inc | — | — | 650 | — | — | 428.46K | — | — | — | 78.62K | 78.62K | — | 132.98K | 104.48K | 1 | 33.33K | 5.72K | 3.07K | 5.89K | 900 |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details