Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in BIO held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | First Eagle Investment Management, LLC | 2.6M | $765.2M | +0.1% | 9.683% | 0.63% |
| 2 | BlackRock, Inc. | 1.7M | $498.8M | +1.1% | 6.312% | 0.01% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 945K | $277.3M | -13.3% | 3.509% | 0.05% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 827K | $242.8M | -0.5% | 3.072% | 0.01% |
| 5 | ARIEL INVESTMENTS, LLC | 817K | $239.8M | +3.9% | 3.034% | 2.39% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 816K | $239.6M | -1.6% | 3.032% | 0.01% |
| 7 | EARNEST PARTNERS LLC | 581K | $170.5M | -1.4% | 2.158% | 0.61% |
| 8 | STATE STREET CORP | 572K | $167.9M | +2.2% | 2.124% | 0.00% |
| 9 | BANK OF AMERICA CORP /DE/ | 490K | $144.0M | +10.2% | 1.822% | 0.01% |
| 10 | Capital World Investors | 462K | $135.8M | +2.8% | 1.718% | 0.02% |
| 11 | Capital Research Global Investors | 443K | $130.2M | +15.0% | 1.648% | 0.02% |
| 12 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | 419K | $123.0M | -1.7% | 1.556% | 0.02% |
| 13 | First Pacific Advisors, LP | 402K | $118.0M | -1.4% | 1.493% | 1.46% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 348K | $102.1M | -4.7% | 1.291% | 0.01% |
| 15 | NOMURA HOLDINGS INC | 329K | $96.6M | +51.3% | 1.222% | 0.11% |
| 16 | UBS Group AG | 308K | $90.5M | -13.0% | 1.145% | 0.01% |
| 17 | SEI INVESTMENTS CO | 273K | $80.3M | -5.1% | 1.016% | 0.07% |
| 18 | BARCLAYS PLC | 268K | $78.6M | -4.0% | 0.994% | 0.02% |
| 19 | Assenagon Asset Management S.A. | 233K | $68.5M | +57.8% | 0.867% | 0.04% |
| 20 | DEERFIELD MANAGEMENT COMPANY, L.P. | 226K | $66.4M | 0.0% | 0.840% | 0.69% |
| 21 | NORTHERN TRUST CORP | 218K | $64.1M | -0.1% | 0.811% | 0.01% |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 196K | $57.4M | -0.5% | 0.726% | 0.01% |
| 23 | FRANKLIN RESOURCES INC | 194K | $56.9M | +13.7% | 0.720% | 0.01% |
| 24 | AQR CAPITAL MANAGEMENT LLC | 193K | $56.0M | +103.8% | 0.716% | 0.02% |
| 25 | MORGAN STANLEY | 190K | $55.9M | -30.5% | 0.707% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in BIO — a direct measure of their conviction.
Filings activity in BIO during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 401 | +2.3% | 72.31% | 1.57 pp | $5.50B | +3.3% |
| Q1 2026 | 392 | +0.3% | 73.88% | +1.75 pp | $5.32B | 5.2% |
| Q4 2025 | 391 | +1.8% | 72.13% | +0.07 pp | $5.61B | +8.3% |
| Q3 2025 | 384 | +0.8% | 72.06% | +1.77 pp | $5.18B | +2.7% |
| Q2 2025 | 381 | 9.5% | 70.29% | +0.93 pp | $5.05B | +16% |
| Q1 2025 | 421 | 4.5% | 69.36% | +0.06 pp | $4.34B | 22% |
| Q4 2024 | 441 | +4.0% | 69.30% | +4.36 pp | $5.58B | 2.5% |
| Q3 2024 | 424 | — | 64.94% | — | $5.72B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BIO stock.
Based on Q2 2026 13F filings, institutional ownership of Bio-Rad Laboratories, Inc. stands at 72.3%, held across 401 reporting institutions.
First Eagle Investment Management, LLC is the largest reported institutional holder of BIO, with approximately 2,606,219 shares worth $0.77B as of Q2 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of BIO.
Our composite Smart Money Score for BIO is 28 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
53 institutions opened new positions in BIO during Q2 2026, while 49 fully exited. 237 added to existing positions and 97 trimmed.
BIO institutional ownership fell by 1.57 percentage points quarter-over-quarter, with a net change of +9 holders.
The top 10 institutions account for 52.4% of all reported 13F value in BIO, and the top 25 account for 75.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Bio-Rad Laboratories, Inc. (BIO) Institutional Ownership