Pacific Biosciences Of California, Inc. (PACB) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

234,248,372Shares Outstanding

28,400,780Shares held by institutions

$44,873,232Value of institutional holdings

85.07%Institutional ownership %

22.23%Shares Changed QoQ

206No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 206 institutions have reported a stake in Pacific Biosciences Of California, Inc. (NASDAQ:PACB) as of December 2025, according to recent 13F filings with the SEC.

Institutional ownership in Pacific Biosciences Of California edged up to 85.1% in December 2025, compared to 79.6% in September 2025.
Institutional share ownership changed by 22.23% QoQ, while the number of institutional owners saw a decrease of 7.62% YoY.
Among the 206 institutional holders of Pacific Biosciences Of California, 108 added to their stakes while 50 trimmed their positions and 48 held steady.
The total number of shares held by institutions in Pacific Biosciences Of California increased to 199.27Mn as of December 2025, a net change of up by 36.25Mn shares quarter on quarter, and down 62.03Mn shares year over year.
The top institutional stake in Pacific Biosciences Of California as of December 31, 2025 belongs to ARK Investment Management LLC, which owns 37.26Mn shares, or 15.91% of the company.
Among the most significant buyers of Pacific Biosciences Of California during December 2025 were ARK Investment Management LLC (6.34Mn), D. E. Shaw & Co., Inc. (4.44Mn), RENAISSANCE TECHNOLOGIES LLC (3.85Mn), Casdin Capital, LLC (3.50Mn), Point72 Asset Management, L.P. (2.96Mn).
Leading sellers of Pacific Biosciences Of California stock in December 2025 included Amova Asset Management Americas, Inc. (868.98K), Sumitomo Mitsui Trust Group, Inc. (868.98K), Koss-Olinger Consulting, LLC (700.00K), MILLENNIUM MANAGEMENT LLC (572.23K), Squarepoint Ops LLC (503.92K).
The top 10 institutional holders of Pacific Biosciences Of California for the quarter ending December 2025 included ARK Investment Management LLC (37.26Mn), BlackRock, Inc. (23.34Mn), SOFTBANK GROUP CORP. (20.45Mn), VANGUARD GROUP INC (17.04Mn), Amova Asset Management Americas, Inc. (7.81Mn), Sumitomo Mitsui Trust Group, Inc. (7.81Mn), GEODE CAPITAL MANAGEMENT, LLC (7.08Mn), STATE STREET CORP (5.91Mn), D. E. Shaw & Co., Inc. (4.44Mn), MILLENNIUM MANAGEMENT LLC (4.34Mn).

206 Institutional Holders

28,400,780 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
ARK Investment Management LLC	31 Dec, 2025	37,264,228	6,340,125	20.50%	$69,684,106.00
BlackRock, Inc.	31 Dec, 2025	23,344,970	649,218	2.86%	$43,655,095.00
SOFTBANK GROUP CORP.	31 Dec, 2025	20,451,570	0	0.00%	$38,244,436.00
VANGUARD GROUP INC	31 Dec, 2025	17,037,314	657,342	4.01%	$31,859,776.00
Amova Asset Management Americas, Inc.	31 Dec, 2025	7,808,580	-868,978	-10.01%	$14,602,045.00
Sumitomo Mitsui Trust Group, Inc.	31 Dec, 2025	7,808,580	-868,978	-10.01%	$14,602,045.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	7,078,744	172,089	2.49%	$13,240,700.00
STATE STREET CORP	31 Dec, 2025	5,912,223	2,579	0.04%	$11,055,857.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	4,438,273	4,438,273	0.00%	$8,299,571.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	4,344,569	-572,226	-11.64%	$8,124,344.00
Casdin Capital, LLC	31 Dec, 2025	4,223,767	3,500,000	483.58%	$7,898,444.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	3,850,600	3,850,600	0.00%	$7,200,622.00
UBS Group AG	31 Dec, 2025	3,171,546	1,674,320	111.83%	$5,930,792.00
CITADEL ADVISORS LLC	31 Dec, 2025	3,166,241	667,887	26.73%	$5,920,871.00
Point72 Asset Management, L.P.	31 Dec, 2025	2,957,400	2,957,400	0.00%	$5,530,338.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	2,877,184	2,475,418	616.13%	$5,380,334.00
AMIRAL GESTION	31 Dec, 2025	2,733,290	0	0.00%	$3,210,112.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	2,611,543	1,236,284	89.89%	$4,883,585.00
Koss-Olinger Consulting, LLC	31 Dec, 2025	2,600,000	-700,000	-21.21%	$4,862,000.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	2,465,853	38,499	1.59%	$4,611,145.00

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