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

Institutions by Trading Activity

Ownership Statistics

300,844,000Shares Outstanding

202,058,999Shares held by institutions

$349,562,068Value of institutional holdings

67.16%Institutional ownership %

20.78%Shares Changed QoQ

210No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Pacific Biosciences Of California, Inc. (NASDAQ:PACB) has 209 institutional investors that have filed 13F reports for the period ending December 2025.

Collectively, these holders controlled 66.7% of Pacific Biosciences Of California's outstanding shares in December 2025, up from 62.7% in September 2025.
They increased total shares held in Pacific Biosciences Of California by 20.64% from the prior quarter, while the number of investors in PACB decreased 6.28% year over year.
Of these 209 funds, 110 grew their exposure to Pacific Biosciences Of California, 53 cut back, and 46 maintained positions.
Combined, these investors held 200.63Mn shares in PACB for December 2025, up by 34.32Mn shares quarter on quarter, and down 67.01Mn shares year over year.
ARK Investment Management LLC holds the largest position in PACB at 37.26Mn shares as of December 31, 2025, or 12.39% of shares outstanding.
The biggest buyers of Pacific Biosciences Of California for the quarter ending December 2025 included ARK Investment Management LLC (6.34Mn), D. E. Shaw & Co., Inc. (4.44Mn), RENAISSANCE TECHNOLOGIES LLC (3.85Mn), Casdin Capital, LLC (3.5Mn), Point72 Asset Management, L.P. (2.96Mn).
The largest sales of PACB for the quarter ending December 2025 came from Bank Of America Corp /De/ (1.09Mn), Barclays Plc (922.86K), Amova Asset Management Americas, Inc. (868.98K), Sumitomo Mitsui Trust Group, Inc. (868.98K), Koss-Olinger Consulting, LLC (700.0K).
Per Business Quant, the top 10 investors in PACB for the quarter ending December 2025 include 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).

210 Institutional Holders

202,058,999 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
Goldman Sachs Group Inc	31 Dec, 2025	2,757,744	2,248,317	441.34%	$5,156,982.00
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

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