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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.

Q1 2026 vs. Q4 2025

How the institutions holding Pacific Biosciences of California, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of PACB: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders2166231+21
Shares200.7M17.1M188.2M+4.50M (+2.5%)
Value$373.5M$31.9M$248.5M−$93.1M (−27.2%)

6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (52)

Institutions that held Pacific Biosciences of California, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to PACB in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Capital Management LLC12,777,449$16.9M0.00%
Vanguard Portfolio Management LLC2,868,393$3.79M0.00%
Vanguard Fiduciary Trust Co1,986,483$2.62M0.00%
Qube Research & Technologies Ltd1,184,975$1.56M0.00%
Tudor Investment Corp Et Al684,707$903.8K0.00%
PEAK6 LLC599,022$790.7K0.02%
Panagora Asset Management Inc502,663$663.5K0.00%
Himension Fund276,532$365.0K0.03%
Water Island Capital LLC272,040$359.1K0.05%
Balyasny Asset Management LLC260,538$343.9K0.00%
Jennison Associates LLC229,794$303.3K0.00%
SEI Investments Co166,823$220.2K0.00%
Main Street Research LLC152,100$200.8K0.01%
Vanguard Global Advisers, LLC121,781$160.8K0.00%
Ieq Capital, LLC112,698$148.8K0.00%
Simplex Trading, LLC109,016$143.9K0.00%
Canada Pension Plan Investment Board107,800$142.3K0.00%
Kavar Capital Partners Group, LLC93,319$123.2K0.02%
Marshall Wace, LLP81,300$107.3K0.00%
DRW Securities, LLC35,565$46.9K0.00%
Aquatic Capital Management LLC24,622$32.5K0.00%
Cerity Partners LLC21,421$28.3K0.00%
Krilogy Financial LLC15,344$25.0K0.00%
Pallas Capital Advisors LLC18,811$24.8K0.00%
Essential Partners LLC18,615$24.6K0.01%
Insigneo Advisory Services, LLC18,595$24.5K0.00%
GTS Securities LLC17,133$22.6K0.00%
CI Private Wealth, LLC16,858$21.3K0.00%
Merit Financial Group, LLC15,567$20.5K0.00%
CIBC Bancorp USA Inc.14,514$19.2K0.00%
Hudson Bay Capital Management LP14,300$18.9K0.00%
Brighton Jones LLC14,006$18.5K0.00%
Chicago Partners Investment Group LLC10,447$17.9K0.00%
Axq Capital, LP10,974$14.5K0.00%
Brevan Howard Capital Management LP10,806$14.3K0.00%
EverSource Wealth Advisors, LLC2,785$3.68K0.00%
Optiver Holding B.V.2,140$2.83K0.00%
Fifth Third Bancorp1,827$2.41K0.00%
Stone House Investment Management, LLC1,497$1.98K0.00%
Gill Capital Partners, LLC977$1.29K0.00%
Cassaday & Co Wealth Management LLC380$5020.00%
MAI Capital Management226$2990.00%
National Bank of Canada198$2590.00%
Twin Peaks Wealth Advisors, LLC158$2090.00%
Harbour Investments, Inc.138$1830.00%
Vanguard National Trust Co53$700.00%
SJS Investment Consulting Inc.50$660.00%
Transamerica Financial Advisors, Inc.42$550.00%
JPL Wealth Management, LLC40$530.00%
Advisory Services Network, LLC25$330.00%
Sunbelt Securities, Inc.12$160.00%
Quantbot Technologies LP1$10.00%

Sold out (31)

Institutions that held Pacific Biosciences of California, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Not filed for Q1 2026 yet (6)

Institutions that held Pacific Biosciences of California, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding PACB in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc17,037,314$31.9M
CIBC World Markets Corp18,268$34.2K
Comerica Bank1,827$3.42K
CIBC Private Wealth Group, LLC1,040$1.95K
Global Retirement Partners, LLC283$529
DV Equities, LLC100$187