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Rock Springs Capital Management’s Agios Pharmaceuticals AGIO Stock Holding History

Rock Springs Capital Management’s Portfolio AGIO Stock Details AGIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$19.8M Sell
532,563
-266,600
-33% -$8.09M 0.96% 35
2026
Q1 		$27M Hold
799,163
– – 1.59% 19
2025
Q4 		$21.8M Sell
799,163
-159,379
-17% -$5.59M 1.12% 28
2025
Q3 		$38.5M Sell
958,542
-31,203
-3% -$1.17M 2.25% 12
2025
Q2 		$32.9M Buy
989,745
+647,565
+189% +$19.6M 2.05% 16
2025
Q1 		$10M Sell
342,180
-128,906
-27% -$4.28M 0.57% 51
2024
Q4 		$15.5M Sell
471,086
-228,303
-33% -$10.7M 0.59% 51
2024
Q3 		$31.1M Sell
699,389
-344,872
-33% -$15.7M 1.01% 39
2024
Q2 		$45M Sell
1,044,261
-720,244
-41% -$26M 1.36% 29
2024
Q1 		$51.6M Sell
1,764,505
-387,668
-18% -$10.4M 1.31% 29
2023
Q4 		$47.9M Sell
2,152,173
-557,888
-21% -$12.5M 1.18% 29
2023
Q3 		$67.1M Buy
2,710,061
+23,894
+0.9% +$632K 1.8% 17
2023
Q2 		$76.1M Buy
2,686,167
+24,562
+0.9% +$611K 1.81% 19
2023
Q1 		$61.1M Sell
2,661,605
-334,987
-11% -$8.9M 1.46% 24
2022
Q4 		$84.1M Sell
2,996,592
-61,277
-2% -$1.73M 2.02% 14
2022
Q3 		$86.5M Buy
3,057,869
+129,411
+4% +$3.47M 2.23% 12
2022
Q2 		$64.9M Buy
2,928,458
+263,183
+10% +$5.94M 1.89% 12
2022
Q1 		$77.6M Buy
2,665,275
+18,650
+0.7% +$570K 1.95% 12
2021
Q4 		$87M Buy
2,646,625
+90,446
+4% +$3.64M 2.01% 12
2021
Q3 		$118M Sell
2,556,179
-18,129
-0.7% -$876K 2.48% 6
2021
Q2 		$142M Buy
2,574,308
+30,708
+1% +$1.72M 2.8% 3
2021
Q1 		$131M Buy
2,543,600
+20,079
+0.8% +$994K 2.87% 1
2020
Q4 		$109M Buy
2,523,521
+942,012
+60% +$37.2M 2.32% 6
2020
Q3 		$55.4M Buy
1,581,509
+401,789
+34% +$17.6M 1.4% 20
2020
Q2 		$63.1M Buy
1,179,720
+124,220
+12% +$5.75M 1.73% 10
2020
Q1 		$37.4M Buy
1,055,500
+414,000
+65% +$19.1M 1.55% 18
2019
Q4 		$30.6M Buy
641,500
+289,000
+82% +$10.9M 0.97% 37
2019
Q3 		$11.4M Buy
352,500
+182,000
+107% +$7.53M 0.46% 68
2019
Q2 		$8.51M Buy
170,500
+53,000
+45% +$2.83M 0.31% 84
2019
Q1 		$7.92M Buy
+117,500
New +$6.84M 0.31% 92

Other funds holding AGIO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LCM
Lynx1 Capital Management San Juan, Puerto Rico $866M AUM 231.68% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
EAM
Erste Asset Management Vienna, Austria $12.9B AUM 52.69% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM

Rock Springs Capital Management's AGIO Position: Q2 2026 in Review

Rock Springs Capital Management reduced its Agios Pharmaceuticals (AGIO) stake by 33% in Q2 2026, selling an estimated $8.09M and leaving 532,563 shares worth $19.8M. The position accounts for 0.96% of the portfolio, ranked #35.

Rock Springs Capital Management first reported a position in AGIO in Q1 2019 and has held it in 30 quarters since. The position peaked at $142M in Q2 2021. 239 funds tracked by Wall St. Rank hold AGIO as of Q2 2026.

  • Rock Springs Capital Management held 532,563 shares of Agios Pharmaceuticals worth $19.8M as of Q2 2026.
  • Rock Springs Capital Management sold 266,600 Agios Pharmaceuticals shares in Q2 2026, an estimated $8.09M.
  • Agios Pharmaceuticals made up 0.96% of Rock Springs Capital Management's portfolio in Q2 2026, its #35 holding.
  • Rock Springs Capital Management first reported a position in Agios Pharmaceuticals in Q1 2019 and has held it in 30 quarters since.
  • Rock Springs Capital Management's Agios Pharmaceuticals position peaked at $142M in Q2 2021.
  • 239 funds tracked by Wall St. Rank held Agios Pharmaceuticals as of Q2 2026.

Based on Rock Springs Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.