PACIFIC BIOSCIENCES OF CALIF (PACB) Institutional Ownership Changes & 13F Activity
PACIFIC BIOSCIENCES OF CALIF (PACB). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include ARK Invest, Point72 Asset Management, L.P., Goldman Sachs Group Inc, Longaeva Partners L.P., and Jane Street Group, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Envestnet Asset Management Inc | Sell | -16,035 | -10.8% | 132,926 | $223.31K | Q2 2026 | Sep 23, 2026 |
| State Street Corp | Sell | -160,541 | -2.6% | 5,961,175 | $10.01M | Q2 2026 | Sep 22, 2026 |
| Manufacturers Life Insurance Company, The | Buy | +497 | +0.7% | 75,341 | $126.57K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +1,269,852 | +80.6% | 2,845,903 | $4.78M | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +802 | +4.8% | 17,660 | $29.67K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Sell | -11,076 | -74.1% | 3,867 | $6.50K | Q2 2026 | Aug 24, 2026 |
| Gill Capital Partners, Llc | Sell | -177 | -18.1% | 800 | $1.34K | Q2 2026 | Aug 20, 2026 |
| Mercer Global Advisors Inc | Buy | +17,096 | +49.3% | 51,769 | $86.97K | Q2 2026 | Aug 19, 2026 |
| Transamerica Financial Advisors, Llc | Buy | +53 | +126.2% | 95 | $159.00 | Q2 2026 | Aug 17, 2026 |
| ARK Invest | Sell | -6,491,872 | -17.9% | 29,781,416 | $50.03M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Buy | +4,501,600 | +1575.6% | 4,787,300 | $8.04M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +2,241,420 | +226.8% | 3,229,887 | $5.43M | Q2 2026 | Aug 14, 2026 |
| Longaeva Partners L.P. | Buy | +2,118,231 | — | 2,118,231 | $3.56M | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Sell | -1,358,099 | -97.7% | 31,971 | $53.71K | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +1,297,091 | — | 1,297,091 | $2.18M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -929,876 | -19.0% | 3,962,442 | $6.66M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Sell | -887,024 | -74.9% | 297,951 | $500.56K | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +732,986 | +20.9% | 4,242,599 | $7.13M | Q2 2026 | Aug 14, 2026 |
| Numerai Gp Llc | Buy | +621,469 | — | 621,469 | $1.04M | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Buy | +597,334 | — | 597,334 | $1.00M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +570,599 | +15.7% | 4,208,146 | $7.07M | Q2 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Buy | +537,192 | +70.7% | 1,296,684 | $2.18M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Buy | +410,098 | +23.9% | 2,129,263 | $3.58M | Q2 2026 | Aug 14, 2026 |
| Xtx Topco Ltd | Buy | +394,118 | +161.0% | 638,882 | $1.07M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -318,575 | -19.1% | 1,348,131 | $2.26M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +303,801 | +116.6% | 564,339 | $948.09K | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +246,802 | +10.3% | 2,652,298 | $4.46M | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +151,885 | +115.8% | 283,099 | $475.61K | Q2 2026 | Aug 14, 2026 |
| Birchview Capital, Lp | Sell | -150,000 | -10.0% | 1,350,000 | $2.27M | Q2 2026 | Aug 14, 2026 |
| Voleon Capital Management Lp | Buy | +134,834 | — | 134,834 | $226.52K | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about PACB activity
Which institutional owners are buying PACB?
Institutional owners buying PACB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in PACB activity?
"Buy" means an investor increased their reported position in PACB compared to the prior reporting period. This reflects growing exposure to PACIFIC BIOSCIENCES OF CALIF (PACB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in PACB increasing?
Institutional interest in PACB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related PACB Institutional Insights
- PACB Overview
- PACB 13F Institutional Holders
- PACB Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- PACB Insider Trading & SEC Form 4 Activity
- PACB Articles
- Top Institutional Investor Stock Rankings