Simplex Trading’s aTyr Pharma ATYR Stock Holding History

Simplex Trading’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	–	Sell	-1,335	Closed	-$872	–	10507
2026 Q1	$1.04K	Sell	1,335 -24,892	-95%	-$21K	﹤0.01%	8586
2025 Q4	$20.5K	Buy	+26,227	New	+$21.5K	﹤0.01%	6454
2025 Q3	–	Sell	-9,203	Closed	-$41.7K	–	10294
2025 Q2	$46K	Sell	9,203 -87,649	-90%	-$345K	﹤0.01%	6014
2025 Q1	$292K	Buy	96,852 +83,691	+636%	+$305K	﹤0.01%	3942
2024 Q4	$47K	Buy	13,161 +12,371	+1,566%	+$37.5K	﹤0.01%	5953
2024 Q3	$1K	Sell	790 -1,074	-58%	-$1.95K	﹤0.01%	8316
2024 Q2	$2K	Sell	1,864 -4,157	-69%	-$7.23K	﹤0.01%	8380
2024 Q1	$11K	Buy	+6,021	New	+$10.5K	﹤0.01%	7573
2023 Q4	–	Sell	-9,032	Closed	-$11.6K	–	10027
2023 Q3	$14K	Buy	+9,032	New	+$16.7K	﹤0.01%	6957
2023 Q1	–	Sell	-12,214	Closed	-$26.8K	–	10321
2022 Q4	$26K	Buy	+12,214	New	+$28.8K	﹤0.01%	6626
2019 Q1	–	Sell	-21	Closed	–	–	8001
2018 Q4	$0	Buy	+21	New	+$176	﹤0.01%	7955

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

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 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

Simplex Trading's ATYR Position: Q2 2026 in Review

Simplex Trading sold out of aTyr Pharma (ATYR) in Q2 2026, closing a stake of 1,335 shares — an estimated $872 sold.

Simplex Trading first reported a position in ATYR in Q4 2018 and held it in 11 quarters. The position peaked at $292K in Q1 2025. 90 funds tracked by Wall St. Rank hold ATYR as of Q2 2026.

Simplex Trading reported no remaining aTyr Pharma position as of Q2 2026 after selling out during the quarter.
Simplex Trading sold 1,335 aTyr Pharma shares in Q2 2026, an estimated $872.
Simplex Trading first reported a position in aTyr Pharma in Q4 2018 and held it in 11 quarters.
Simplex Trading's aTyr Pharma position peaked at $292K in Q1 2025.
90 funds tracked by Wall St. Rank held aTyr Pharma as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.