Pacific Biosciences of California (PACB)
Healthcare
Medical Devices
1.40 $
-5.4%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Pacific Biosciences of California (PACB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.8% of the shares are freely tradable; institutional investors hold 54.0%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
54.0%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
8.8%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
97.8%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
22.4%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
311Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| ARK Investment Management LLC | 11.68 | 36,273,288 | -2.7 | 03/31/2026 |
| BlackRock Inc | 8.14 | 25,267,429 | +8.2 | 03/31/2026 |
| SoftBank Group Corp | 6.59 | 20,451,570 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 5.49 | 17,037,314 | +4.0 | 12/31/2025 |
| Vanguard Capital Management, LLC | 4.12 | 12,777,449 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| ARK Disruptive Innovation Full Composite | 6.71 | 20,822,908 | -2.5 | 03/31/2026 |
| ARK Innovation ETF | 4.91 | 15,249,501 | +2.3 | 05/31/2026 |
| ARK Genomic Revolution | 3.34 | 10,381,803 | -3.2 | 03/31/2026 |
| ARK Genomic Revolution ETF | 3.20 | 9,945,319 | -0.3 | 05/31/2026 |
| Vanguard Total Stock Mkt Idx Inv | 3.07 | 9,535,565 | +6.4 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.