aTYR PHARMA INC
ATYR- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001339970
No open-market purchases or sales by aTYR PHARMA INC insiders were filed in the last 90 days; 89 institutions reported holding it in 13F filings for Q2 2026, worth $23.2M in total; no superinvestor holds it.
Q1 2026 vs. Q4 2025
How the institutions holding aTYR PHARMA INC changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Of which not filed for Q1 2026 | Q1 2026 | Change |
|---|---|---|---|---|
| Holders | 84 | 1 | 111 | +28 |
| Shares | 54.8M | 4.96M | 56.1M | +6.19M (+12.4%) |
| Value | $42.1M | $3.89M | $43.7M | +$5.49M (+14.4%) |
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (36)
Institutions that held aTYR PHARMA INC at the end of Q1 2026 but not at the end of Q4 2025.
Sold out (8)
Institutions that held aTYR PHARMA INC at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Two Sigma Advisers, LP | 841,350 | $658.9K |
| Tikvah Management LLC | 460,833 | $360.9K |
| Two Sigma Securities, LLC | 39,006 | $30.5K |
| SG Americas Securities, LLC | 24,032 | $19.0K |
| R Squared Ltd | 11,255 | $8.81K |
| Amalgamated Bank | 3,014 | $2.00K |
| Natixis | 280 | $219 |
| Rosalind Advisors, Inc. | 1,039,080 | – |
Not filed for Q1 2026 yet (1)
Institutions that held aTYR PHARMA INC at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Vanguard Group Inc | 4,961,871 | $3.89M |