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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.

Q3 2025 vs. Q2 2025

How the institutions holding aTYR PHARMA INC changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of ATYR: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders1102103−5
Shares66.4M68.4K61.9M−4.35M (−6.6%)
Value$336.5M$346.7K$43.9M−$292.2M (−86.9%)

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (34)

Institutions that held aTYR PHARMA INC at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to ATYR in Q3 2025
InstitutionSharesValue% of portfolio
State of Wisconsin Investment Board438,262$316.2K0.00%
Artia Global Partners LP372,276$268.6K0.05%
XTX Topco Ltd312,410$225.4K0.01%
Brevan Howard Capital Management LP234,613$168.9K0.00%
ADAR1 Capital Management, LLC175,000$126.2K0.01%
Rafferty Asset Management, LLC170,610$123.1K0.00%
Graham Capital Management, L.P.147,851$106.7K0.00%
Squarepoint Ops LLC124,924$90.1K0.00%
Toronto Dominion Bank109,400$78.9K0.00%
Wolverine Trading, LLC54,026$43.0K0.00%
Los Angeles Capital Management LLC45,830$33.1K0.00%
DLD Asset Management, LP40,000$28.9K0.00%
Profund Advisors LLC36,785$26.5K0.00%
SEI Investments Co33,829$24.4K0.00%
Rockefeller Capital Management L.P.28,118$20.3K0.00%
Courier Capital LLC25,000$18.0K0.00%
Connor, Clark & Lunn Investment Management Ltd.20,994$15.1K0.00%
SG Americas Securities, LLC21,463$15.0K0.00%
RBF Capital, LLC20,000$14.4K0.00%
Hobbs Group Advisors, LLC18,653$13.5K0.00%
Belpointe Asset Management LLC10,438$7.53K0.00%
Russell Investments Group, Ltd.7,464$5.38K0.00%
Signaturefd, LLC1,809$1.30K0.00%
The PNC Financial Services Group, Inc.811$5850.00%
Quadrant Capital Group LLC462$3340.00%
MCF Advisors LLC400$2890.00%
US Bancorp316$2280.00%
Larson Financial Group LLC150$1080.00%
Advisory Services Network, LLC91$660.00%
Financial Consulate, Inc55$400.00%
CWM, LLC19$00.00%
FNY Investment Advisers, LLC700$00.00%
Rosalind Advisors, Inc.1,039,080––
T. Rowe Price Investment Management, Inc.141––

Sold out (39)

Institutions that held aTYR PHARMA INC at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of ATYR in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Octagon Capital Advisors LP3,820,000$19.4M
Alyeska Investment Group, L.P.1,412,749$7.16M
Integral Health Asset Management, LLC1,050,000$5.32M
Point72 Asset Management, L.P.988,677$5.01M
Erste Asset Management GmbH600,000$3.04M
Renaissance Technologies LLC518,355$2.63M
Marshall Wace, LLP511,412$2.59M
Ally Bridge Group (NY) LLC287,720$1.46M
Thoroughbred Financial Services, LLC210,775$1.07M
Dauntless Investment Group, LLC158,402$803.1K
Parkman Healthcare Partners LLC150,000$760.5K
Citadel Advisors LLC119,117$603.9K
Fred Alger Management, LLC92,493$468.9K
Schonfeld Strategic Advisors LLC77,264$391.7K
Quadrature Capital Ltd56,022$282.9K
Knott David M Jr50,367$255.4K
Polar Asset Management Partners Inc.40,500$205.3K
Diametric Capital, LP37,012$187.7K
Kingswood Wealth Advisors, LLC36,000$182.5K
Manufacturers Life Insurance Company, The32,477$164.7K
Virtu Financial LLC31,959$162.0K
Omers Administration Corp31,800$161.2K
D.A. Davidson & Co.31,650$160.5K
LPL Financial LLC26,335$133.5K
Kennedy Capital Management, Inc.21,514$109.1K
Colony Group, LLC20,000$101.4K
Creative Planning14,509$73.6K
Prelude Capital Management, LLC14,481$73.4K
Oxford Asset Management LLP13,734$69.6K
Catalyst Funds Management Pty Ltd10,700$54.2K
Simplex Trading, LLC9,203$46.0K
Twin Peaks Wealth Advisors, LLC1,815$9.49K
Nisa Investment Advisors, LLC1,203$6.10K
Proffitt & Goodson Inc880$4.46K
Sachetta, LLC830$4.21K
Huntington National Bank700$3.55K
NBC Securities, Inc.700$3.00K
Garde Capital, Inc.200$1.01K
Rothschild Investment LLC90$456

Not filed for Q3 2025 yet (2)

Institutions that held aTYR PHARMA INC at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATYR in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Avantax Advisory Services, Inc.57,669$292.4K
CIBC World Markets Corp10,718$54.3K