AI summary pending
View Full Filing (SEC EDGAR)Atyr Pharma Inc
$0.17-5.4%
-$9.0M
Net Activity
-30.06% total shares
Institutions Holding
94
Popularity Rank
#4740
Avg Weight
0.01%
Total Value
$23.8M
Market Cap
$16.2M
94 institutions currently hold ATYR, with 50 net buyers and 68 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Decreased
Based on recent trading activity
Net Selling Institutions
68
Net Buying Institutions
50
Top 5 by Value
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Across its top 20 institutional holders, ATYR's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 37/100).
ATYR ranks #4740 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
ATYR is a disclosed holding of Cliff Asness (AQR Capital Management), one of the tracked superinvestors on AlphaSMO — it makes up 0.0% of that fund's own 13F portfolio.
94 institutions disclose a position in ATYR, but none treat it as a major bet — even Kalehua Capital Management LLC, its most concentrated holder, allocates just 0.6% of its own portfolio to it.
Essential Partners LLC has trimmed its ATYR position for two straight quarters, cutting it by $1.2K while still holding $73.0.
ATYR is down 5.4% today, and institutions have been net sellers of $9.0M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
ATYR reported a net loss of $60.8M over the trailing twelve months.
+$8.3M
Total Buy Value
$17.6M
Total Sell Value
50
Net Buyers
68
Net Sellers
ATYR
Q2 2026
Top 5 Institutional Movers
ATYR does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Federated Hermes, Inc. | 13G/A | 2026-10-07 | 5.1% |
| FMR LLC | 13G/A | 2026-08-06 | 2.5% |
| BlackRock, Inc. | 13G/A | 2026-07-27 | 1.8% |
| Federated Hermes, Inc. | 13G/A | 2026-07-08 | 8.7% |
4
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)This 8-K is a routine earnings disclosure from aTyr Pharma. On August 7, 2026, the company put out a press release covering its financial results for the quarter ended June 30, 2026, and attached that release as Exhibit 99.1. The information is being "furnished" rather than "filed," which means it carries different legal weight under SEC rules.
View Full Filing (SEC EDGAR)ATYR Pharma disclosed in this 8-K that it signed a termination agreement with Kyorin Pharmaceutical on July 30, 2026, making that day the official end of their collaboration and license agreement. The prior license giving Kyorin exclusive rights to develop and commercialize efzofitimod in Japan has ended, and those rights have reverted to ATYR. The company now says it holds global rights to develop and commercialize the drug. The filing also notes related ancillary agreements were terminated and wind-down activities were agreed.
View Full Filing (SEC EDGAR)002120202
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,442
Total reported value
$354.7B
Held by 4442 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,353
Total reported value
$864.4B
Held by 4353 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,273
Total reported value
$320.7B
Held by 4273 institutions — one of the most-tracked stocks on AlphaSMO
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