Pacific Biosciences of California
PACB · NASDAQ
$1.96+$0.12 (+6.52%)TodayMarket closed ·
Prev close $1.84
Who owns PACB
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 39.3% of PACB’s shares.
- ARK Investment Management LLC9.6%
- BlackRock Institutional Trust Company, N.A.8.0%
- SoftBank Group Corp.6.6%
- Vanguard Capital Management, LLC4.3%
- Next 6 largest institutions10.8%
- All other shareholders60.7%
| Holder | Shares | % of shares |
|---|---|---|
| ARK Investment Management LLC | 29.78M | 9.59% |
| BlackRock Institutional Trust Company, N.A. | 24.89M | 8.01% |
| SoftBank Group Corp. | 20.45M | 6.58% |
| Vanguard Capital Management, LLC | 13.40M | 4.31% |
| Geode Capital Management, L.L.C. | 7.61M | 2.45% |
| Amova Asset Management Co., Ltd. | 6.01M | 1.93% |
| State Street Investment Management (US) | 5.96M | 1.92% |
| BlackRock Financial Management, Inc. | 4.93M | 1.59% |
| Point72 Asset Management, L.P. | 4.79M | 1.54% |
| Point72 (DIFC) Ltd | 4.27M | 1.37% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| ARK Innovation ETF | 12.26M | 3.95% |
| ARK Genomic Revolution ETF | 11.24M | 3.62% |
| Vanguard Total Stock Market Index Fund | 9.54M | 3.07% |
| iShares Russell 2000 ETF | 7.32M | 2.36% |
| Amova ARK Positive Change Innovation Fund | 3.64M | 1.17% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $2.09M (2 trades) of PACB on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Gibson James R II | Option exercise | 500.00K | — |
| Gibson James R II | Sale | 661.82K | $2.06M |
| Gibson James R II | Option exercise | 500.00K | $590.00K |
| Van Oene Mark | Sale | 26.91K | $30.41K |
| Van Oene Mark | Award | 1.97M | — |
| Van Oene Mark | Award | 489.13K | — |
| Gibson Christopher | Award | 74.50K | — |
| Smith Christopher M | Award | 223.49K | — |
| Valantine Hannah | Award | 223.49K | — |
| Ericson William W. | Award | 223.49K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 47.22M
- Days to cover
- 2.97
- % of shares outstanding
- 15.20%
- Average daily volume
- 15.91M
- Change since last report
- −3.4%
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