Pacific Biosciences of California, Inc.
PACB- Exchange
- Nasdaq
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001299130
In the last 90 days, Pacific Biosciences of California, Inc. insiders filed 0 open-market purchases and 1 sale; 223 institutions reported holding it in 13F filings for Q2 2026, worth $320.8M in total; superinvestors ARK Invest and HHLR Advisors (Hillhouse) hold it.
Holders of 5% or more of PACB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Pacific Biosciences of California, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 13G/A | 10.30%30.9M shares | – | Nov 4, 20251 filing | Nov 4, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 7.70%22.9M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on Pacific Biosciences of California, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202611:19 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −5.46 ppfrom 5.46%Below 5% | Mar 13, 2026 | SEC |
| Nov 14, 20255:16 PM ET | Madrone Capital Partners, LLCand 5 others | 13G/A | 2.80%8.48M shares | −4.00 ppfrom 6.80%Below 5% | Sep 30, 2025 | SEC |
| Nov 4, 20254:58 PM ET | ARK Investment Management LLCand 1 otherSuperinvestorARK Invest | 13G/A | 10.30%30.9M shares | – | Sep 30, 2025 | SEC |
| Aug 13, 20254:57 PM ET | Madrone Capital Partners, LLCand 5 others | 13G/A | 6.80%20.3M shares | – | Jun 30, 2025 | SEC |
| Jul 24, 20251:54 PM ET | Edmond de Rothschild Asset Management (France)and 2 others | 13G/A | 4.50%13.4M shares | –Below 5% | Jun 30, 2025 | SEC |
| Apr 30, 202511:13 AM ET | Vanguard Group Inc | 13G/A | 5.46%16.3M shares | – | Mar 31, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 7.70%22.9M shares | – | Mar 31, 2025 | SEC |
| Apr 9, 20254:09 PM ET | Millennium Management LLCand 2 others | 13G/A | 0.70%2.20M shares | −5.30 ppfrom 6.00%Below 5% | Mar 31, 2025 | SEC |
| Dec 10, 20244:32 PM ET | Millennium Management LLCand 2 others | 13G | 6.00%16.4M shares | New | Dec 4, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Pacific Biosciences of California, Inc. shares.
No Form 144 notices for Pacific Biosciences of California, Inc. are on file.