PACB · Pacific Biosciences Of California, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding PACB
All superinvestors →Holder Concentration
Across 223 13F filersWho Holds PACB
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 223 filers, like-for-like change +1.6%; actively managed books -3.0%; index-like books +9.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 47.2% | 117 | -2.1% |
| Exempt adviser | 1.6% | 4 | -22.8% |
| Adviser | 0.7% | 1 | -11.7% |
| Bank | 9.6% | 18 | -8.5% |
| Insurer | 0.0% | 2 | +22.7% |
| Broker-dealer | 0.6% | 3 | -6.3% |
| Benefit plan | 0.0% | 2 | -12.7% |
| Non-US | 0.2% | 5 | -19.3% |
| Holding company | 19.0% | 6 | +28.6% |
| Unknown | 21.1% | 65 | -0.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 40.4% | 23 | +9.2% |
| Systematic-like | 12.3% | 18 | +37.1% |
| Concentrated | 13.2% | 39 | -1.6% |
| Diversified active | 34.2% | 142 | -12.6% |
| Unknown | 0.0% | 1 | 0.0% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 54.1% | 141 | +4.5% |
| Medium turnover | 21.3% | 42 | -16.4% |
| High turnover | 15.0% | 30 | +25.8% |
| Unknown | 9.6% | 10 | +3.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 11.7% | 19 | +17.7% |
| Medium horizon | 29.8% | 39 | +10.7% |
| Long horizon | 51.9% | 154 | -8.4% |
| Unknown | 6.5% | 11 | +34.3% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.4% | 45 | -9.0% |
| $1B to $10B | 8.0% | 60 | +6.0% |
| $10B to $100B | 32.9% | 60 | -5.9% |
| $100B or more | 56.7% | 58 | +6.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.5% | 66 | -12.7% |
| Pooled investment vehicles | 13.5% | 19 | +16.0% |
| Registered funds and BDCs | 30.1% | 11 | -8.7% |
| Pension and profit sharing plans | 0.0% | 2 | +25.3% |
| Insurance companies | 0.1% | 3 | +18.5% |
| Governments and sovereign funds | 0.2% | 1 | -58.1% |
| Corporations | 0.0% | 3 | 0.0% |
| Other investment advisers | 0.0% | 2 | -4.6% |
| Diversified | 1.7% | 10 | +38.4% |
| Unknown | 52.8% | 106 | +5.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 27.4% | 27 | -3.6% |
| Private equity funds | 0.3% | 11 | -5.8% |
| Venture capital funds | 0.0% | 1 | -60.6% |
| Real estate funds | 0.0% | 4 | +59.1% |
| Other private funds | 4.9% | 12 | -13.0% |
| Mixed private funds | 0.6% | 2 | 0.0% |
| Private funds, type not stated | 0.1% | 2 | -58.4% |
| No private funds | 15.4% | 62 | +3.2% |
| Securitized asset funds | 0.0% | 0 | — |
| Unknown | 51.2% | 102 | +6.3% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 81.9% | 189 | +3.2% |
| Outside the US | 18.1% | 34 | -5.0% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F.
Conviction and Crowding
223 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 39.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies PACB's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | PRME Prime Medicine, Inc. | 5 |
| 2 | RXRX Recursion Pharmaceuticals, Inc. | 5 |
| 3 | NTLA Intellia Therapeutics, Inc. | 5 |
| 4 | BEAM Beam Therapeutics Inc. | 5 |
| 5 | ALMR Alamar Biosciences, Inc. | 3 |
| 6 | ABSI Absci Corp | 4 |
| 7 | ETOR eToro Group Ltd. | 3 |
| 8 | GOSS Gossamer Bio, Inc. | 3 |
| 9 | PSNL Personalis, Inc. | 3 |
| 10 | PONY Pony AI Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not PACB, quarter ended Jun 30, 2026Found through its holder-overlap peers: PRME, RXRX, NTLA, BEAM, ALMR, ABSI, ETOR, GOSS, PSNL, PONY, MAZE, TWST, TXG, WGS, BFLY, JOBY, KLAR, SYM, LUNR, VCYT. 1,305 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | BAILLIE GIFFORD & CO Adviser, Diversified active | $1,391,735,448 6 held | SYM, JOBY, TWST |
| 2 | TOYOTA MOTOR CORP/ Unknown, Unknown | $1,145,813,256 1 held | JOBY |
| 3 | SC US (TTGP), LTD. Unknown, Concentrated | $1,113,791,228 1 held | KLAR |
| 4 | Artisan Partners Limited Partnership Registered adviser, Diversified active | $835,928,298 3 held | TWST, VCYT, ALMR |
| 5 | Walmart Inc. Unknown, Unknown | $722,826,000 2 held | SYM, KLAR |
| 6 | Advent International, L.P. Unknown, Concentrated | $491,778,088 1 held | LUNR |
| 7 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Registered adviser, Diversified active | $403,954,691 3 held | TWST, WGS, VCYT |
| 8 | AMERIPRISE FINANCIAL INC Adviser, Diversified active | $400,157,997 16 held | SYM, PSNL, ABSI |
| 9 | Commonwealth Bank of Australia Bank, Unknown | $352,322,436 1 held | KLAR |
| 10 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $329,148,502 7 held | MAZE, TWST, ALMR |
Fund Ownership of PACB by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 13.58% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.31% | 10,303,136 |
| Index ETFs | 10.27% | 31,916,962 |
| Active ETFs | 8.40% | 26,125,074 |
| Active funds | 2.41% | 7,489,559 |
| Unclassified | 0.00% | 0 |
| All registered funds | 24.40% | 75,834,731 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $54,330,439 | 16.82% | 32,339,550 | Shares | 2026-08-07 | |
| Large ARK Investment Management LLC Registered adviser | $50,032,778 | 15.49% | 29,781,416 | Shares | 2026-08-14 | |
| Large SOFTBANK GROUP CORP. | $34,358,637 | 10.64% | 20,451,570 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $22,508,529 | 6.97% | 13,397,934 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $12,778,949 | 3.96% | 7,606,518 | Shares | 2026-08-12 | |
| Mid Amova Asset Management Americas, Inc. Registered adviser | $10,096,321 | 3.13% | 6,009,715 | Shares | 2026-08-13 | |
| Mega Sumitomo Mitsui Trust Group, Inc. Bank | $10,096,321 | 3.13% | 6,009,715 | Shares | 2026-07-30 | |
| Mega STATE STREET CORP Bank | $10,014,774 | 3.10% | 5,961,175 | Shares | 2026-09-22 | |
| Large Point72 Asset Management, L.P. Registered adviser | $8,042,664 | 2.49% | 4,787,300 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $7,127,566 | 2.21% | 4,242,599 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $7,069,684 | 2.19% | 4,208,146 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $6,656,902 | 2.06% | 3,962,442 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $5,426,208 | 1.68% | 3,229,887 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $4,781,117 | 1.48% | 2,845,903 | Shares | 2026-09-02 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $4,488,818 | 1.39% | 2,671,916 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $4,455,860 | 1.38% | 2,652,298 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $3,952,679 | 1.22% | 2,352,786 | Shares | 2026-08-13 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $3,675,213 | 1.14% | 2,187,627 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3,577,160 | 1.11% | 2,129,263 | Shares | 2026-08-14 | |
| Mid Longaeva Partners L.P. | $3,558,628 | 1.10% | 2,118,231 | Shares | 2026-08-14 | |
| Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd Exempt adviser | $2,846,837 | 0.88% | 1,694,546 | Shares | 2026-07-31 | |
| Small Birchview Capital, LP | $2,268,000 | 0.70% | 1,350,000 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $2,264,859 | 0.70% | 1,348,131 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $2,179,111 | 0.67% | 1,297,091 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $2,178,425 | 0.67% | 1,296,684 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $1,718,829 | 0.53% | 1,023,113 | Shares | 2026-08-11 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $1,623,216 | 0.50% | 966,200 | Shares | 2026-08-13 | |
| Small BOURNE LENT ASSET MANAGEMENT INC | $1,584,332 | 0.49% | 943,055 | Shares | 2026-07-29 | |
| Small HHLR ADVISORS, LTD. Exempt adviser | $1,543,738 | 0.48% | 918,892 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $1,500,474 | 0.46% | 893,140 | Shares | 2026-08-13 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $1,358,616 | 0.42% | 808,700 | Shares | 2026-08-06 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $1,332,797 | 0.41% | 793,332 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $1,289,511 | 0.40% | 767,567 | Shares | 2026-08-06 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $1,276,433 | 0.40% | 759,783 | Shares | 2026-08-11 | |
| Mid Casdin Capital, LLC Registered adviser | $1,215,928 | 0.38% | 723,767 | Shares | 2026-08-14 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $1,150,307 | 0.36% | 684,707 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,073,321 | 0.33% | 638,882 | Shares | 2026-08-14 | |
| Mid Numerai GP LLC Registered adviser | $1,044,067 | 0.32% | 621,469 | Shares | 2026-08-14 | |
| Mid CARRET ASSET MANAGEMENT, LLC Registered adviser | $1,008,235 | 0.31% | 600,140 | Shares | 2026-08-04 | |
| Large Man Group plc | $1,003,521 | 0.31% | 597,334 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $1,002,694 | 0.31% | 596,843 | Shares | 2026-08-06 | |
| Large Balyasny Asset Management L.P. Registered adviser | $948,089 | 0.29% | 564,339 | Shares | 2026-08-14 | |
| Large PEAK6 LLC Broker-dealer | $933,327 | 0.29% | 555,552 | Shares | 2026-08-13 | |
| Small Mirador Capital Partners LP Registered adviser | $809,888 | 0.25% | 341,725 | Shares | 2026-10-09 | |
| Mid Vestmark Advisory Solutions, Inc. Registered adviser | $803,384 | 0.25% | 478,205 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $802,658 | 0.25% | 477,776 | Shares | 2026-08-13 | |
| Mid ArrowMark Colorado Holdings LLC Registered adviser | $786,881 | 0.24% | 468,382 | Shares | 2026-08-13 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $741,953 | 0.23% | 441,639 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $673,008 | 0.21% | 400,600 | Put | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $650,260 | 0.20% | 387,060 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $599,753 | 0.19% | 356,996 | Shares | 2026-08-12 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $585,183 | 0.18% | 348,324 | Shares | 2026-08-13 | |
| Mega LPL Financial LLC Broker-dealer | $567,003 | 0.18% | 337,502 | Shares | 2026-08-07 | |
| Mega Creative Planning Registered adviser | $542,623 | 0.17% | 322,990 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $500,557 | 0.16% | 297,951 | Shares | 2026-08-14 | |
| Mid GROUP ONE TRADING LLC Broker-dealer | $488,644 | 0.15% | 290,860 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $475,605 | 0.15% | 283,099 | Shares | 2026-08-14 | |
| Mega HSBC HOLDINGS PLC | $470,914 | 0.15% | 280,306 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $465,339 | 0.14% | 276,988 | Shares | 2026-08-14 | |
| Small WATER ISLAND CAPITAL LLC Registered adviser | $459,758 | 0.14% | 273,666 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $449,207 | 0.14% | 267,386 | Shares | 2026-08-07 | |
| Mid AdvisorNet Financial, Inc Registered adviser | $422,542 | 0.13% | 178,288 | Shares | 2026-10-15 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $406,056 | 0.13% | 241,700 | Call | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $389,395 | 0.12% | 231,783 | Shares | 2026-08-14 | |
| Large Quadrature Capital Ltd | $311,898 | 0.10% | 185,654 | Shares | 2026-08-07 | |
| Small Koa Wealth Management, LLC Registered adviser | $284,400 | 0.09% | 120,000 | Shares | 2026-10-14 | |
| Large OSAIC HOLDINGS, INC. Holding company | $276,396 | 0.09% | 164,522 | Shares | 2026-08-14 | |
| Large MARSHALL WACE, LLP Exempt adviser | $274,918 | 0.09% | 163,642 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $268,378 | 0.08% | 159,749 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $264,092 | 0.08% | 157,198 | Shares | 2026-08-14 | |
| Mid Main Street Research LLC Registered adviser | $255,528 | 0.08% | 152,100 | Shares | 2026-07-29 | |
| Mega JANE STREET GROUP, LLC | $255,192 | 0.08% | 151,900 | Call | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $245,191 | 0.08% | 145,948 | Shares | 2026-08-12 | |
| Mega CITIGROUP INC Bank | $234,231 | 0.07% | 139,424 | Shares | 2026-08-03 | |
| Mid Voleon Capital Management LP Registered adviser | $226,521 | 0.07% | 134,834 | Shares | 2026-08-14 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $223,315 | 0.07% | 132,926 | Shares | 2026-09-23 | |
| Large IEQ CAPITAL, LLC Registered adviser | $207,953 | 0.06% | 123,782 | Shares | 2026-08-11 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $204,592 | 0.06% | 121,781 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $186,144 | 0.06% | 110,800 | Call | 2026-09-02 | |
| Large BENJAMIN EDWARDS INC | $180,961 | 0.06% | 107,715 | Shares | 2026-07-24 | |
| Small KAVAR CAPITAL PARTNERS GROUP, LLC Registered adviser | $173,575 | 0.05% | 103,319 | Shares | 2026-07-20 | |
| Large Bridgewater Associates, LP Registered adviser | $172,638 | 0.05% | 102,761 | Shares | 2026-08-14 | |
| Large GABELLI FUNDS LLC Registered adviser | $168,000 | 0.05% | 100,000 | Shares | 2026-08-12 | |
| Large Cerity Partners LLC Registered adviser | $165,497 | 0.05% | 98,511 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $142,506 | 0.04% | 84,825 | Shares | 2026-07-29 | |
| Large Police & Firemen's Retirement System of New Jersey | $134,324 | 0.04% | 79,955 | Shares | 2026-07-23 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $126,572 | 0.04% | 75,341 | Shares | 2026-09-09 | |
| Mid HUB Investment Partners, LLC | $126,000 | 0.04% | 75,000 | Shares | 2026-07-31 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Benefit plan | $120,860 | 0.04% | 71,941 | Shares | 2026-08-10 | |
| Mid HARTLINE INVESTMENT CORP/ Registered adviser | $115,920 | 0.04% | 69,000 | Shares | 2026-07-29 | |
| Mega STIFEL FINANCIAL CORP | $114,658 | 0.04% | 68,249 | Shares | 2026-08-12 | |
| Large INTECH INVESTMENT MANAGEMENT LLC Registered adviser | $113,248 | 0.04% | 67,410 | Shares | 2026-08-10 | |
| Mid SIMPLEX TRADING, LLC | $110,307 | 0.03% | 65,659 | Shares | 2026-08-12 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $109,536 | 0.03% | 65,200 | Put | 2026-09-02 | |
| Mega SEI INVESTMENTS CO | $99,505 | 0.03% | 59,230 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $96,003 | 0.03% | 57,145 | Shares | 2026-08-12 | |
| Large CAPTRUST FINANCIAL ADVISORS Registered adviser | $94,854 | 0.03% | 56,461 | Shares | 2026-08-13 | |
| Large Cetera Investment Advisers Registered adviser | $91,833 | 0.03% | 54,663 | Shares | 2026-08-12 | |
| Small State of Wyoming | $91,168 | 0.03% | 54,267 | Shares | 2026-08-06 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $86,971 | 0.03% | 51,769 | Shares | 2026-08-19 |
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