ATYR aTyr Pharma, Inc.

NASDAQ
$0.54

aTyr Pharma, Inc. (ATYR) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+81.82
10 buyers / 1 seller
STRONG BUYING
Funds compared
12
funds with comparable ATYR positions
12 current holders · 8 prior-quarter holders
Net share change
+3.03M
+4.01M added, -985.2K cut
Position activity
4 new 6 increased 1 reduced 0 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Point72 Asset Management, L.P. New +37.3K — $22.2K 0.0% 59
Qube Research & Technologies Ltd Quant New +127.0K — $75.8K 0.0% 55
RENAISSANCE TECHNOLOGIES LLC Quant Increased +124.7K +307.7% $74.4K 0.0% 52
CITADEL ADVISORS LLC Quant Increased +1.19M +2521.9% $713.0K 0.0% 52
Balyasny Asset Management L.P. Increased +12.7K +122.8% $7.6K 0.0% 51
Schonfeld Strategic Advisors Long/Short Quant New +50.9K — $30.4K 0.0% 51
MARSHALL WACE, LLP Long/Short Increased +230.0K +166.5% $137.3K 0.0% 50
Y-Intercept Quant New +22.4K — $13.4K 0.0% 48
AQR Capital Management Long/Short Quant Increased +2.11M +426.3% $1.3M 0.0% 47
MILLENNIUM MANAGEMENT LLC Reduced -985.2K -60.0% $588.0K 0.0% 41

Most significant buyers

By move score, not size.

  • Point72 Asset Management, L.P. New · +37.3K
  • Qube Research & Technologies Ltd New · +127.0K
  • RENAISSANCE TECHNOLOGIES LLC Increased · +124.7K
  • CITADEL ADVISORS LLC Increased · +1.19M
  • Balyasny Asset Management L.P. Increased · +12.7K

Most significant sellers

By move score, not size.

  • MILLENNIUM MANAGEMENT LLC Reduced · -985.2K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Point72 Asset Management, L.P. 1 37.3K 0 +37.3K — 0.0% New 59
Qube Research & Technologies Ltd 2 127.0K 0 +127.0K — 0.0% New 55
RENAISSANCE TECHNOLOGIES LLC 1 165.2K 40.5K +124.7K +307.7% 0.0% Increased 52
CITADEL ADVISORS LLC 1 1.2M 47.4K +1.19M +2521.9% 0.0% Increased 52
Balyasny Asset Management L.P. 2 23.0K 10.3K +12.7K +122.8% 0.0% Increased 51
Schonfeld Strategic Advisors 3 50.9K 0 +50.9K — 0.0% New 51
MARSHALL WACE, LLP 2 368.1K 138.1K +230.0K +166.5% 0.0% Increased 50
Y-Intercept 4 22.4K 0 +22.4K — 0.0% New 48
AQR Capital Management 3 2.6M 496.0K +2.11M +426.3% 0.0% Increased 47
MILLENNIUM MANAGEMENT LLC 2 656.1K 1.6M -985.2K -60.0% 0.0% Reduced 41
TWO SIGMA INVESTMENTS, LP 2 1.2M 1.1M +100.6K +8.8% 0.0% Increased 28
ADAR1 Capital Management 3 50.7K 50.7K 0 +0.0% 0.0% Unchanged 17

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.