Hudson Bay Capital Management
ATYR

Hudson Bay Capital Management’s aTyr Pharma ATYR Stock Holding History

Hudson Bay Capital Management’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
2025
Q2 		– Sell
-13,320
Closed -$40.2K – 1709
2025
Q1 		$40.2K Buy
+13,320
New +$48.6K ﹤0.01% 1202
2017
Q4 		– Sell
-13,477
Closed -$953K – 563
2017
Q3 		$953K Buy
+13,477
New +$624K 0.02% 304

Other funds holding ATYR

Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
OCA
Octagon Capital Advisors New York $904M AUM 737.04% 1-Year Est. Return
TM
Tikvah Management Charlotte, North Carolina $323M AUM 69.61% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $26.4B AUM 44.85% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Hudson Bay Capital Management's ATYR Position: Q2 2025 in Review

Hudson Bay Capital Management sold out of aTyr Pharma (ATYR) in Q2 2025, closing a stake of 13,320 shares — an estimated $40.2K sold.

Hudson Bay Capital Management first reported a position in ATYR in Q3 2017 and held it in 2 quarters. The position peaked at $953K in Q3 2017. 110 funds tracked by Wall St. Rank hold ATYR as of Q2 2025.

  • Hudson Bay Capital Management reported no remaining aTyr Pharma position as of Q2 2025 after selling out during the quarter.
  • Hudson Bay Capital Management sold 13,320 aTyr Pharma shares in Q2 2025, an estimated $40.2K.
  • Hudson Bay Capital Management first reported a position in aTyr Pharma in Q3 2017 and held it in 2 quarters.
  • Hudson Bay Capital Management's aTyr Pharma position peaked at $953K in Q3 2017.
  • 110 funds tracked by Wall St. Rank held aTyr Pharma as of Q2 2025.

Based on Hudson Bay Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.