Simplex Trading
ATYR

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
Q1 		$121K Sell
155,500
-7,800
-5% -$6.58K ﹤0.01% 4860
2025
Q4 		$128K Sell
163,300
-244,500
-60% -$201K ﹤0.01% 4721
2025
Q3 		$294K Buy
407,800
+157,800
+63% +$715K ﹤0.01% 4489
2025
Q2 		$1.27M Buy
250,000
+218,500
+694% +$860K ﹤0.01% 2532
2025
Q1 		$95K Buy
31,500
+28,700
+1,025% +$105K ﹤0.01% 5110
2024
Q4 		$10K Buy
+2,800
New +$8.48K ﹤0.01% 7228
2023
Q3 		– Sell
-49,500
Closed -$106K – 10045
2023
Q2 		$106K Buy
49,500
+46,000
+1,314% +$100K ﹤0.01% 5018
2023
Q1 		$7K Buy
3,500
+600
+21% +$1.31K ﹤0.01% 7859
2022
Q4 		$6K Sell
2,900
-500
-15% -$1.18K ﹤0.01% 7989
2022
Q3 		$10K Sell
3,400
-6,000
-64% -$20.1K ﹤0.01% 8279
2022
Q2 		$26K Sell
9,400
-5,900
-39% -$21.3K ﹤0.01% 7313
2022
Q1 		$81K Buy
15,300
+5,600
+58% +$31.7K ﹤0.01% 6456
2021
Q4 		$72K Buy
9,700
+4,500
+87% +$37.6K ﹤0.01% 6743
2021
Q3 		$26K Sell
5,200
-100
-2% -$598 ﹤0.01% 8212
2021
Q2 		$25K Buy
+5,300
New +$22.6K ﹤0.01% 8404

Other funds holding ATYR

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
GCP
GSA Capital Partners London, United Kingdom $1.61B AUM 28.28% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Simplex Trading's ATYR Position: Q1 2026 in Review

Simplex Trading reduced its aTyr Pharma (ATYR) stake by 95% in Q1 2026, selling an estimated $21K and leaving 1,335 shares worth $1.04K. The position accounts for ﹤0.01% of the portfolio, ranked #8586.

Simplex Trading first reported a position in ATYR in Q4 2018 and has held it in 11 quarters since. The position peaked at $292K in Q1 2025. 111 funds tracked by Wall St. Rank hold ATYR as of Q1 2026.

  • Simplex Trading held 1,335 shares of aTyr Pharma worth $1.04K as of Q1 2026.
  • Simplex Trading sold 24,892 aTyr Pharma shares in Q1 2026, an estimated $21K.
  • aTyr Pharma made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #8586 holding.
  • Simplex Trading first reported a position in aTyr Pharma in Q4 2018 and has held it in 11 quarters since.
  • Simplex Trading's aTyr Pharma position peaked at $292K in Q1 2025.
  • 111 funds tracked by Wall St. Rank held aTyr Pharma as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.