American Century Companies
ATYR

American Century Companies’s aTyr Pharma ATYR Stock Holding History

American Century Companies’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
-22,703
Closed -$68.6K – 2968
2025
Q1 		$68.6K Sell
22,703
-65,409
-74% -$238K ﹤0.01% 2851
2024
Q4 		$319K Buy
88,112
+26,516
+43% +$80.3K ﹤0.01% 2665
2024
Q3 		$108K Buy
61,596
+1,109
+2% +$2.02K ﹤0.01% 2829
2024
Q2 		$94.4K Buy
60,487
+6,444
+12% +$11.2K ﹤0.01% 2825
2024
Q1 		$105K Buy
54,043
+31,963
+145% +$55.8K ﹤0.01% 2856
2023
Q4 		$31.1K Hold
22,080
– – ﹤0.01% 2863
2023
Q3 		$34.9K Buy
22,080
+7,889
+56% +$14.6K ﹤0.01% 2824
2023
Q2 		$30.7K Buy
+14,191
New +$31K ﹤0.01% 2777

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

American Century Companies's ATYR Position: Q2 2025 in Review

American Century Companies sold out of aTyr Pharma (ATYR) in Q2 2025, closing a stake of 22,703 shares — an estimated $68.6K sold.

American Century Companies first reported a position in ATYR in Q2 2023 and held it in 8 quarters. The position peaked at $319K in Q4 2024. 110 funds tracked by Wall St. Rank hold ATYR as of Q2 2025.

  • American Century Companies reported no remaining aTyr Pharma position as of Q2 2025 after selling out during the quarter.
  • American Century Companies sold 22,703 aTyr Pharma shares in Q2 2025, an estimated $68.6K.
  • American Century Companies first reported a position in aTyr Pharma in Q2 2023 and held it in 8 quarters.
  • American Century Companies's aTyr Pharma position peaked at $319K in Q4 2024.
  • 110 funds tracked by Wall St. Rank held aTyr Pharma as of Q2 2025.

Based on American Century Companies's 13F filing for Q2 2025, filed 12 Aug 2025.