Cliff Asness’s aTyr Pharma ATYR Stock Holding History

Cliff Asness’s Portfolio ATYR Stock Details ATYR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.56M	Buy	2,610,548 +2,114,530	+426%	+$1.38M	﹤0.01%	2773
2026 Q1	$387K	Sell	496,018 -273,802	-36%	-$231K	﹤0.01%	3274
2025 Q4	$603K	Buy	+769,820	New	+$632K	﹤0.01%	2816

Other funds holding ATYR

Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

GCP

GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

KCM

Kalehua Capital Management Dallas, Texas $174M AUM

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Cliff Asness's ATYR Position: Q2 2026 in Review

Cliff Asness increased its aTyr Pharma (ATYR) stake by 426% in Q2 2026, buying an estimated $1.38M and bringing the position to 2,610,548 shares worth $1.56M. The position accounts for ﹤0.01% of the portfolio, ranked #2773.

Cliff Asness first reported a position in ATYR in Q4 2025 and has held it in 3 quarters since. 90 funds tracked by Wall St. Rank hold ATYR as of Q2 2026.

Cliff Asness held 2,610,548 shares of aTyr Pharma worth $1.56M as of Q2 2026.
Cliff Asness bought 2,114,530 aTyr Pharma shares in Q2 2026, an estimated $1.38M.
aTyr Pharma made up ﹤0.01% of Cliff Asness's portfolio in Q2 2026, its #2773 holding.
Cliff Asness first reported a position in aTyr Pharma in Q4 2025 and has held it in 3 quarters since.
90 funds tracked by Wall St. Rank held aTyr Pharma as of Q2 2026.

Based on AQR Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.