BCM
IBB icon

Bronte Capital Management’s iShares Biotechnology ETF IBB Stock Holding History

Bronte Capital Management’s Portfolio IBB Stock Details IBB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$12.5M Sell
65,807
-3,458
-5% -$594K 1.34% 19
2026
Q1 		$11.7M Sell
69,265
-3,085
-4% -$528K 1.16% 23
2025
Q4 		$12.2M Sell
72,350
-209,072
-74% -$34M 1.22% 19
2025
Q3 		$45.4M Sell
281,422
-13,924
-5% -$1.9M 4.07% 9
2025
Q2 		$42.1M Buy
295,346
+32,947
+13% +$4.04M 3.31% 12
2025
Q1 		$39.3M Sell
262,399
-2,187
-0.8% -$297K 3.19% 12
2024
Q4 		$41M Sell
264,586
-8,369
-3% -$1.18M 3.24% 11
2024
Q3 		$39.7M Buy
272,955
+512
+0.2% +$74.1K 3.23% 12
2024
Q2 		$37.4M Sell
272,443
-10,977
-4% -$1.47M 2.93% 13
2024
Q1 		$38.9M Buy
283,420
+1,892
+0.7% +$258K 3.17% 11
2023
Q4 		$38.2M Sell
281,528
-1,701
-0.6% -$208K 3.42% 12
2023
Q3 		$34.6M Sell
283,229
-44,584
-14% -$5.67M 3.49% 12
2023
Q2 		$41.6M Buy
327,813
+25,737
+9% +$3.34M 4.01% 7
2023
Q1 		$39M Buy
302,076
+44,461
+17% +$5.82M 4.53% 8
2022
Q4 		$33.8M Sell
257,615
-5,476
-2% -$708K 4.27% 10
2022
Q3 		$30.8M Sell
263,091
-21,178
-7% -$2.63M 3.83% 10
2022
Q2 		$33.4M Buy
+284,269
New +$33.7M 3.83% 8

Other funds holding IBB

Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
BNP Paribas Financial Markets
BNP Paribas Financial Markets Paris, France $289B AUM 60.46% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return
CB
Commerce Bank Kansas City, Missouri $22.8B AUM 28.56% 1-Year Est. Return

Bronte Capital Management's IBB Position: Q2 2026 in Review

Bronte Capital Management reduced its iShares Biotechnology ETF (IBB) stake by 5% in Q2 2026, selling an estimated $594K and leaving 65,807 shares worth $12.5M. The position accounts for 1.34% of the portfolio, ranked #19.

Bronte Capital Management first reported a position in IBB in Q2 2022 and has held it in 17 quarters since. The position peaked at $45.4M in Q3 2025. 958 funds tracked by Wall St. Rank hold IBB as of Q2 2026.

  • Bronte Capital Management held 65,807 shares of iShares Biotechnology ETF worth $12.5M as of Q2 2026.
  • Bronte Capital Management sold 3,458 iShares Biotechnology ETF shares in Q2 2026, an estimated $594K.
  • iShares Biotechnology ETF made up 1.34% of Bronte Capital Management's portfolio in Q2 2026, its #19 holding.
  • Bronte Capital Management first reported a position in iShares Biotechnology ETF in Q2 2022 and has held it in 17 quarters since.
  • Bronte Capital Management's iShares Biotechnology ETF position peaked at $45.4M in Q3 2025.
  • 958 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q2 2026.

Based on Bronte Capital Management's 13F filing for Q2 2026, filed 5 Aug 2026.