Renaissance Technologies
ATYR

Renaissance Technologies’s aTyr Pharma ATYR Stock Holding History

Renaissance Technologies’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 		$31.6K Buy
+40,522
New +$34.2K ﹤0.01% 3139
2025
Q3 		– Sell
-518,355
Closed -$2.63M – 4020
2025
Q2 		$2.63M Buy
518,355
+38,400
+8% +$151K ﹤0.01% 1940
2025
Q1 		$1.45M Sell
479,955
-94,500
-16% -$345K ﹤0.01% 2189
2024
Q4 		$2.08M Sell
574,455
-574,720
-50% -$1.74M ﹤0.01% 2026
2024
Q3 		$2.02M Sell
1,149,175
-144,639
-11% -$263K ﹤0.01% 2013
2024
Q2 		$2.02M Buy
1,293,814
+20,959
+2% +$36.5K ﹤0.01% 1881
2024
Q1 		$2.48M Buy
1,272,855
+394,883
+45% +$689K ﹤0.01% 1887
2023
Q4 		$1.24M Buy
877,972
+371,979
+74% +$477K ﹤0.01% 2262
2023
Q3 		$799K Sell
505,993
-20,362
-4% -$37.7K ﹤0.01% 2453
2023
Q2 		$1.14M Buy
526,355
+368,700
+234% +$805K ﹤0.01% 2391
2023
Q1 		$331K Sell
157,655
-8,421
-5% -$18.5K ﹤0.01% 3068
2022
Q4 		$364K Sell
166,076
-21,449
-11% -$50.6K ﹤0.01% 3131
2022
Q3 		$563K Buy
187,525
+36,700
+24% +$123K ﹤0.01% 2861
2022
Q2 		$427K Buy
150,825
+39,970
+36% +$145K ﹤0.01% 3247
2022
Q1 		$593K Sell
110,855
-16,300
-13% -$92.4K ﹤0.01% 3080
2021
Q4 		$950K Sell
127,155
-52,500
-29% -$438K ﹤0.01% 2683
2021
Q3 		$1.63M Buy
179,655
+3,400
+2% +$20.3K ﹤0.01% 2251
2021
Q2 		$860K Sell
176,255
-65,705
-27% -$280K ﹤0.01% 2738
2021
Q1 		$1.08M Sell
241,960
-77,170
-24% -$363K ﹤0.01% 2584
2020
Q4 		$1.24M Sell
319,130
-89,300
-22% -$326K ﹤0.01% 2395
2020
Q3 		$1.32M Buy
408,430
+42,600
+12% +$175K ﹤0.01% 2359
2020
Q2 		$1.62M Buy
365,830
+156,830
+75% +$569K ﹤0.01% 2291
2020
Q1 		$585K Buy
209,000
+9,080
+5% +$39.2K ﹤0.01% 2682
2019
Q4 		$834K Buy
199,920
+6,300
+3% +$24.3K ﹤0.01% 2712
2019
Q3 		$678K Buy
193,620
+61,772
+47% +$228K ﹤0.01% 2748
2019
Q2 		$676K Buy
131,848
+21,808
+20% +$148K ﹤0.01% 2872
2019
Q1 		$847K Buy
110,040
+12,329
+13% +$87.8K ﹤0.01% 2746
2018
Q4 		$678K Buy
97,711
+18,638
+24% +$156K ﹤0.01% 2745
2018
Q3 		$899K Buy
79,073
+40,940
+107% +$448K ﹤0.01% 2646
2018
Q2 		$486K Buy
38,133
+10,412
+38% +$247K ﹤0.01% 2842
2018
Q1 		$1.03M Buy
27,721
+7,764
+39% +$364K ﹤0.01% 2648
2017
Q4 		$978K Buy
19,957
+11,750
+143% +$722K ﹤0.01% 2665
2017
Q3 		$580K Buy
8,207
+3,900
+91% +$181K ﹤0.01% 2749
2017
Q2 		$205K Buy
4,307
+1,536
+55% +$71.9K ﹤0.01% 2994
2017
Q1 		$136K Buy
2,771
+50
+2% +$2.29K ﹤0.01% 3043
2016
Q4 		$82K Sell
2,721
-2,222
-45% -$91.1K ﹤0.01% 3125
2016
Q3 		$220K Buy
+4,943
New +$214K ﹤0.01% 3048

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

Renaissance Technologies's ATYR Position: Q1 2026 in Review

Renaissance Technologies opened a new position in aTyr Pharma (ATYR) in Q1 2026: 40,522 shares worth $31.6K. The stake represents ﹤0.01% of the portfolio and ranks #3139 among its holdings. This is a return to the name: Renaissance Technologies previously reported a position in ATYR as recently as Q2 2025.

Renaissance Technologies first reported a position in ATYR in Q3 2016 and has held it in 37 quarters since. The position peaked at $2.63M in Q2 2025. 111 funds tracked by Wall St. Rank hold ATYR as of Q1 2026.

  • Renaissance Technologies held 40,522 shares of aTyr Pharma worth $31.6K as of Q1 2026.
  • aTyr Pharma was a new Renaissance Technologies position in Q1 2026.
  • aTyr Pharma made up ﹤0.01% of Renaissance Technologies's portfolio in Q1 2026, its #3139 holding.
  • Renaissance Technologies first reported a position in aTyr Pharma in Q3 2016 and has held it in 37 quarters since.
  • Renaissance Technologies's aTyr Pharma position peaked at $2.63M in Q2 2025.
  • 111 funds tracked by Wall St. Rank held aTyr Pharma as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.