iShares Biotechnology ETF (IBB): which funds own it
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Sections with a free account
3 concentrated managers hold it (+1 vs last quarter) with a median weight of 1.4%.
Quarter flow (concentrated managers)
Change in managers (2 → 3): 1 opened · 0 exited = +1
Net flow in the quarter: −$848K (−4 K shares) · bought $3.5M and sold $4.4MShares concentrated managers added minus those they cut, valued at the 13F quarter-end implied price, not each trade's price. It is a different measure from the change in managers: the two can have opposite signs.
Concentrated managers holding it
- Bronte Capital Management PtyReduced$12.5M1.4%−0.1 pp
- DAFNA Capital ManagementReduced$8.1M1.5%−0.7 pp
- QVT FinancialNew$3.5M0.2%+0.2 pp
Up to 15, sorted by position value. The percentage is the weight in each manager's portfolio.
Other relevant holders
Filers with $100M or more in the stock that do not count as concentrated managers because of their type: they are left out of the counts, the consensus and the accumulation.
- Healthcare of Ontario Pension Plan Trust FundPension or sovereign fund$138M0.2%
Largest holders of IBB (all 13F filers)
- Bank of America6.9 MBank or trading desk−384 K
- Citigroup4.8 MBank or trading desk−362 K
- Morgan Stanley3.3 MBank or trading desk+548 K
- BNP Paribas Financial Markets2.2 MBank or trading desk−212 K
- Two Sigma Investments1.6 MQuant or multi-manager+1.0 M
- Goldman Sachs Group1.2 MBank or trading desk−100 K
- Envestnet Asset Management1.1 MWealth adviser−104 K
- Raymond James Financial1.1 MWealth adviser+21 K
- Wells Fargo1.0 MBank or trading desk+175 K
- Commerce Bank909 KBank or trading desk+28 K
- Shares
- 6.9 M
- Change
- −384 K
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- Type
- Bank or trading desk
- Value
- $1.3 bn
- Shares
- 4.8 M
- Change
- −362 K
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- Type
- Bank or trading desk
- Value
- $905M
- Shares
- 3.3 M
- Change
- +548 K
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- Type
- Bank or trading desk
- Value
- $632M
- Shares
- 2.2 M
- Change
- −212 K
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- Type
- Bank or trading desk
- Value
- $422M
- Shares
- 1.6 M
- Change
- +1.0 M
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- Type
- Quant or multi-manager
- Value
- $302M
- Shares
- 1.2 M
- Change
- −100 K
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- Type
- Bank or trading desk
- Value
- $224M
- Shares
- 1.1 M
- Change
- −104 K
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- Type
- Wealth adviser
- Value
- $214M
- Shares
- 1.1 M
- Change
- +21 K
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- Type
- Wealth adviser
- Value
- $200M
- Shares
- 1.0 M
- Change
- +175 K
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- Type
- Bank or trading desk
- Value
- $196M
- Shares
- 909 K
- Change
- +28 K
See more
- Type
- Bank or trading desk
- Value
- $173M
The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.
This company filed no 8-K forms in the last year. Foreign companies listed in the US (ADRs) report material events on forms 6-K and 20-F, and ETFs and funds do not file 8-Ks. If it is a foreign company listed in the US through ADRs (American Depositary Receipts), what trades are bank-issued certificates that represent shares from its home market. See its filings on EDGAR ↗