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Of the 10 tracked institutions holding ATYR, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +6.9pt. It's a gauge of who owns the name, not just how many.
Among the 10 tracked institutional investors we monitor, ATYR (ATYR PHARMA INC) is held with a combined value of $10.22M across 15,308,088 shares. The largest holder is VANGUARD GROUP INC with a position worth $3.89M. 2 funds opened new positions in the most recent quarter. 3 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$10.22M
Total Shares Held
15,308,088
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $3.89M | 0.00% | -11.9% |
| 2 | AQR CAPITAL MANAGEMENT LLC | $1.56M | 0.00% | +426.3% |
| 3 | FMR LLC | $1.47M | 0.00% | -83.2% |
| 4 | BlackRock, Inc. | $1.09M | 0.00% | -71.6% |
| 5 | CITADEL ADVISORS LLC | $741.26K | 0.00% | +2521.9% |
| 6 | TWO SIGMA ADVISERS, LP | $658.86K | 0.00% | New |
| 7 | MILLENNIUM MANAGEMENT LLC | $391.53K | 0.00% | -60.0% |
| 8 | STATE STREET CORP | $295.39K | 0.00% | -71.8% |
| 9 | RENAISSANCE TECHNOLOGIES LLC | $98.60K | 0.00% | +307.7% |
| 10 | Point72 Asset Management, L.P. | $22.25K | 0.00% | New |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of ATYR with a position worth $3.89M, representing 0.00% of their portfolio. In total, 10 institutional investors hold ATYR with a combined value of $10.22M.
In the most recent quarter, 2 funds opened a new position in ATYR. Additionally, 3 increased their holdings and 5 reduced their positions.
Institutional investors hold $10.22M worth of ATYR stock across 10 positions. The largest institutional holder is VANGUARD GROUP INC with $3.89M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATYR, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATYR positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-08-06 |
| 1.8% | 2026-07-27 |
SEC Schedule 13D (activist) and 13G (passive) filings for ATYR. Filed when an investor acquires 5%+ ownership.
Last Close
$0.17
2026-10-21
YTD
-77.3%
0% of 52-week range
