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Of the 13 tracked institutions holding BIO, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +4.8pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, BIO (BIO RAD LABS INC) is held with a combined value of $1.54B across 5,177,974 shares. The largest holder is VANGUARD GROUP INC with a position worth $537.58M. WELLINGTON MANAGEMENT GROUP LLP opened a new position in the most recent quarter. 7 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$1.54B
Total Shares Held
5,177,974
Institutional Holders
13
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $537.58M | 0.01% | -1.1% |
| 2 | BlackRock, Inc. | $498.82M | 0.01% | +1.1% |
| 3 | STATE STREET CORP | $167.88M | 0.00% | +2.2% |
| 4 | Capital Research Global Investors | $130.21M | 0.02% | +15.0% |
| 5 | AQR CAPITAL MANAGEMENT LLC | $56.05M | 0.02% | +103.8% |
| 6 | Gotham Asset Management, LLC | $48.82M | 0.11% | +9.1% |
| 7 | Fisher Asset Management, LLC | $34.33M | 0.01% | -1.5% |
| 8 | CITADEL ADVISORS LLC | $17.86M | 0.01% | -59.1% |
| 9 | WELLINGTON MANAGEMENT GROUP LLP | $17.69M | 0.00% | New |
| 10 | MILLENNIUM MANAGEMENT LLC | $17.59M | 0.01% | +1363.0% |
| Member | Type | Date |
|---|---|---|
| Thomas R Tillis | Sell | Feb 13, 2015 |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of BIO with a position worth $537.58M, representing 0.01% of their portfolio. In total, 13 institutional investors hold BIO with a combined value of $1.54B.
In the most recent quarter, 1 fund opened a new position in BIO. Additionally, 7 increased their holdings and 5 reduced their positions.
Institutional investors hold $1.54B worth of BIO stock across 13 positions. The largest institutional holder is VANGUARD GROUP INC with $537.58M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For BIO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their BIO positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$380.12
2026-09-08
YTD
+24.5%
93% of 52-week range
