Jim Simons
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Jim Simons’s AnaptysBio ANAB Stock Holding History

Jim Simons’s Portfolio ANAB Stock Details ANAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$5.04M Buy
90,900
+14,600
+19% +$786K 0.01% 1378
2025
Q4 		$3.7M Sell
76,300
-47,000
-38% -$1.83M 0.01% 1501
2025
Q3 		$3.78M Sell
123,300
-139,786
-53% -$3.21M 0.01% 1654
2025
Q2 		$5.84M Sell
263,086
-75,614
-22% -$1.58M 0.01% 1424
2025
Q1 		$6.3M Buy
338,700
+145,500
+75% +$2.43M 0.01% 1279
2024
Q4 		$2.56M Sell
193,200
-7,200
-4% -$174K ﹤0.01% 1887
2024
Q3 		$6.71M Buy
200,400
+47,698
+31% +$1.63M 0.01% 1265
2024
Q2 		$3.83M Buy
152,702
+52,502
+52% +$1.22M 0.01% 1474
2024
Q1 		$2.26M Buy
100,200
+4,600
+5% +$109K ﹤0.01% 1953
2023
Q4 		$2.05M Buy
95,600
+2,900
+3% +$50K ﹤0.01% 1937
2023
Q3 		$1.67M Buy
92,700
+34,700
+60% +$662K ﹤0.01% 1973
2023
Q2 		$1.18M Sell
58,000
-13,600
-19% -$276K ﹤0.01% 2371
2023
Q1 		$1.56M Buy
+71,600
New +$1.74M ﹤0.01% 2180
2022
Q3 		– Sell
-29,600
Closed -$601K – 4000
2022
Q2 		$601K Sell
29,600
-28,700
-49% -$636K ﹤0.01% 3048
2022
Q1 		$1.44M Buy
58,300
+23,700
+68% +$717K ﹤0.01% 2468
2021
Q4 		$1.2M Sell
34,600
-34,100
-50% -$1.08M ﹤0.01% 2509
2021
Q3 		$1.86M Sell
68,700
-155,600
-69% -$3.95M ﹤0.01% 2144
2021
Q2 		$5.82M Sell
224,300
-6,482
-3% -$155K 0.01% 1540
2021
Q1 		$4.97M Buy
230,782
+96,182
+71% +$2.43M 0.01% 1651
2020
Q4 		$2.89M Buy
134,600
+107,800
+402% +$2.62M ﹤0.01% 1912
2020
Q3 		$395K Buy
+26,800
New +$484K ﹤0.01% 2902
2020
Q2 		– Sell
-293,500
Closed -$4.15M – 3413
2020
Q1 		$4.15M Buy
293,500
+201,100
+218% +$3.05M ﹤0.01% 1678
2019
Q4 		$1.5M Buy
+92,400
New +$2.19M ﹤0.01% 2449
2018
Q2 		– Sell
-59,400
Closed -$6.18M – 3243
2018
Q1 		$6.18M Sell
59,400
-68,100
-53% -$7.68M 0.01% 1683
2017
Q4 		$12.8M Buy
127,500
+29,700
+30% +$2.19M 0.01% 1227
2017
Q3 		$3.42M Buy
+97,800
New +$2.64M ﹤0.01% 1992

Other funds holding ANAB

EC
EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
AAA
Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
6CM
683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Jim Simons's ANAB Position: Q1 2026 in Review

Jim Simons increased its AnaptysBio (ANAB) stake by 19% in Q1 2026, buying an estimated $786K and bringing the position to 90,900 shares worth $5.04M. The position accounts for 0.01% of the portfolio, ranked #1378.

Jim Simons first reported a position in ANAB in Q3 2017 and has held it in 26 quarters since. The position peaked at $12.8M in Q4 2017. 207 funds tracked by Wall St. Rank hold ANAB as of Q1 2026.

  • Jim Simons held 90,900 shares of AnaptysBio worth $5.04M as of Q1 2026.
  • Jim Simons bought 14,600 AnaptysBio shares in Q1 2026, an estimated $786K.
  • AnaptysBio made up 0.01% of Jim Simons's portfolio in Q1 2026, its #1378 holding.
  • Jim Simons first reported a position in AnaptysBio in Q3 2017 and has held it in 26 quarters since.
  • Jim Simons's AnaptysBio position peaked at $12.8M in Q4 2017.
  • 207 funds tracked by Wall St. Rank held AnaptysBio as of Q1 2026.

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