Pacific Biosciences Of California PACB Institutional Ownership

NASDAQ PACB

$2.14 +0.18 (+9.18%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

221 Institutions

Increased 94 42.5%

Unchanged 50 22.6%

Reduced 77 34.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

61.48%

▲+0.87 pp QoQ

Shares Held by Institutions

191.08Mn

of 310.81Mn outstanding

▲+1.53% QoQ

Shares Outstanding

310.81Mn

119.73Mn held outside 13F filers

Institutional Investors

221

filed 13F for Jun 2026

▼-9 vs prior quarter

Net Shares Added (QoQ)

+2.89Mn

accumulated since last quarter

Value of Holdings

$374.51Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Pacific Biosciences of California, Inc. (NASDAQ:PACB) had 221 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Collectively, these holders controlled 61.48% of Pacific Biosciences of California's outstanding shares in Q2 2026, up from 60.61% in Q1 2026.
Total shares held in Pacific Biosciences of California rose 1.53% from Q1 2026, while the number of holders rose 8.33% from Q2 2025.
Of the 221 holders of PACB in Q2 2026, 94 added to their positions, 77 reduced their stakes and 50 left their positions unchanged.
The aggregate institutional position in Pacific Biosciences of California was 191.08Mn shares at the end of Q2 2026, up 2.89Mn from the prior quarter and down 6.54Mn from a year earlier.
BlackRock, Inc. was the top holder of Pacific Biosciences of California as of June 30, 2026, with 32.34Mn shares, or 10.40% of shares outstanding.
Holders that added the most shares of Pacific Biosciences of California in Q2 2026 were BlackRock, Inc. (+7.07Mn shares), Point72 Asset Management, L.P. (+4.5Mn shares), Goldman Sachs Group Inc (+2.24Mn shares), Citadel Advisors LLC (+1.27Mn shares) and Two Sigma Investments, LP (+732.99K shares).
On the other side, among holders that kept a position in Pacific Biosciences of California, the largest reductions in Q2 2026 came from ARK Investment Management LLC (-6.49Mn shares), Nuveen, LLC (-1.93Mn shares), Renaissance Technologies LLC (-1.52Mn shares), Morgan Stanley (-1.36Mn shares) and Jane Street Group, LLC (-1.36Mn shares).
Per Business Quant data, the 10 largest holders of Pacific Biosciences of California at the end of Q2 2026 were BlackRock, Inc. (32.34Mn shares), ARK Investment Management LLC (29.78Mn shares), Softbank Group Corp. (20.45Mn shares), Vanguard Capital Management LLC (13.4Mn shares), Geode Capital Management, LLC (7.61Mn shares), Sumitomo Mitsui Trust Group, Inc. (6.01Mn shares), Amova Asset Management Americas, Inc. (6.01Mn shares), State Street Corp (5.96Mn shares), Point72 Asset Management, L.P. (4.79Mn shares) and Two Sigma Investments, LP (4.24Mn shares).

Form 13F Holdings

221 Institutional Holders

Report period 30 Jun, 2026

Total shares held 191.08Mn

Of outstanding 61.48%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	32,339,550	10.40%	▲7,072,121	+27.99%	$54.33Mn
2	ARK Investment Management LLC	0001697748	29,781,416	9.58%	▼6,491,872	-17.90%	$50.03Mn
3	Softbank Group Corp.	0001065521	20,451,570	6.58%	0	0.00%	$34.36Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	13,397,934	4.31%	▲620,485	+4.86%	$22.51Mn
5	GEODE CAPITAL MANAGEMENT, LLC	0001214717	7,606,518	2.45%	▲631,252	+9.05%	$12.78Mn
6	Amova Asset Management Americas, Inc.	0001480751	6,009,715	1.93%	▼1,028,272	-14.61%	$10.04Mn
6	Sumitomo Mitsui Trust Group, Inc.	0001475365	6,009,715	1.93%	▼1,028,272	-14.61%	$10.10Mn
7	State Street Corp	0000093751	5,961,175	1.92%	▼160,541	-2.62%	$10.01Mn
8	Point72 Asset Management, L.P.	0001603466	4,787,300	1.54%	▲4,501,600	+1,575.64%	$8.04Mn
9	TWO SIGMA INVESTMENTS, LP	0001179392	4,242,599	1.37%	▲732,986	+20.89%	$7.13Mn
10	D. E. Shaw & Co., Inc.	0001009207	4,208,146	1.35%	▲570,599	+15.69%	$7.07Mn
11	MILLENNIUM MANAGEMENT LLC	0001273087	3,962,442	1.27%	▼929,876	-19.01%	$6.66Mn
12	Goldman Sachs Group Inc	0000886982	3,229,887	1.04%	▲2,241,420	+226.76%	$5.43Mn
13	CITADEL ADVISORS LLC	0001423053	2,845,903	0.92%	▲1,269,852	+80.57%	$4.78Mn
14	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,671,916	0.86%	▼196,477	-6.85%	$4.49Mn
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	2,652,298	0.85%	▲246,802	+10.26%	$4.46Mn
16	Northern Trust Corp	0000073124	2,352,786	0.76%	▲221,998	+10.42%	$3.95Mn
17	VANGUARD FIDUCIARY TRUST CO	0000933478	2,187,627	0.70%	▲201,144	+10.13%	$3.68Mn
18	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	2,129,263	0.69%	▲410,098	+23.85%	$3.58Mn
19	Longaeva Partners L.P.	0002054122	2,118,231	0.68%	▲2,118,231	0.00%	$3.56Mn

Showing 1 to 20 of 221 holders