Jim Simons’s iShares Biotechnology ETF IBB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$1.05M Sell
6,200
-20,200
-77% -$3.45M ﹤0.01% 2255
2025
Q4
$4.46M Sell
26,400
-1,082
-4% -$176K 0.01% 1373
2025
Q3
$3.97M Buy
+27,482
New +$3.75M 0.01% 1631
2025
Q1
Sell
-13,100
Closed -$1.73M 3619
2024
Q4
$1.73M Buy
+13,100
New +$1.84M ﹤0.01% 2147
2023
Q2
Sell
-12,500
Closed -$1.61M 4071
2023
Q1
$1.61M Buy
+12,500
New +$1.64M ﹤0.01% 2156
2022
Q4
Sell
-10,600
Closed -$1.24M 4237
2022
Q3
$1.24M Sell
10,600
-24,400
-70% -$3.03M ﹤0.01% 2368
2022
Q2
$4.12M Buy
35,000
+33,400
+2,088% +$3.96M ﹤0.01% 1703
2022
Q1
$208K Buy
+1,600
New +$208K ﹤0.01% 3631
2021
Q1
Sell
-10,795
Closed -$1.64M 3479
2020
Q4
$1.64M Buy
+10,795
New +$1.54M ﹤0.01% 2248
2020
Q1
Sell
-4,700
Closed -$566K 3596
2019
Q4
$566K Buy
+4,700
New +$524K ﹤0.01% 2853
2019
Q3
Sell
-19,800
Closed -$2.16M 3543
2019
Q2
$2.16M Buy
19,800
+9,500
+92% +$1.01M ﹤0.01% 2281
2019
Q1
$1.15M Buy
+10,300
New +$1.13M ﹤0.01% 2607

Other funds holding IBB

Jim Simons's IBB Position: Q1 2026 in Review

Jim Simons reduced its iShares Biotechnology ETF (IBB) stake by 77% in Q1 2026, selling an estimated $3.45M and leaving 6,200 shares worth $1.05M. The position accounts for ﹤0.01% of the portfolio, ranked #2255.

Jim Simons first reported a position in IBB in Q1 2019 and has held it in 12 quarters since. The position peaked at $4.46M in Q4 2025. 921 funds tracked by Wall St. Rank hold IBB as of Q1 2026.

  • Jim Simons held 6,200 shares of iShares Biotechnology ETF worth $1.05M as of Q1 2026.
  • Jim Simons sold 20,200 iShares Biotechnology ETF shares in Q1 2026, an estimated $3.45M.
  • iShares Biotechnology ETF made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2255 holding.
  • Jim Simons first reported a position in iShares Biotechnology ETF in Q1 2019 and has held it in 12 quarters since.
  • Jim Simons's iShares Biotechnology ETF position peaked at $4.46M in Q4 2025.
  • 921 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q1 2026.

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