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Pacific Biosciences
PACB

Overview Fund Activity

222 hedge funds and large institutions have $265M invested in Pacific Biosciences in 2025 Q1 according to their latest regulatory filings, with 36 funds opening new positions, 57 increasing their positions, 73 reducing their positions, and 35 closing their positions.

Holders
222
Holders Change
-3
Holders Change %
-1.33%
% of All Funds
3.02%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
36
Increased
57
Reduced
73
Closed
35
Calls
$4.29M
Puts
$1.73M
Net Calls
+$2.56M
Net Calls Change
-$95K

Top Buyers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$19.2M
2
KOC
2
Koss-Olinger Consulting
Florida
$3.54M
3
UBS Group
3
UBS Group
Switzerland
$2.7M
4
EDRH
4
Edmond de Rothschild Holding
Switzerland
$25.8M
5
XT
5
XTX Topco
Cayman Islands
$576K

Top Sellers

1
Millennium Management
1
Millennium Management
New York
$2.6M
2
Bank of New York Mellon
2
Bank of New York Mellon
New York
$1.02M
3
Walleye Capital
3
Walleye Capital
New York
$0
4
Goldman Sachs
4
Goldman Sachs
New York
$2.2M
5
Morgan Stanley
5
Morgan Stanley
New York
$3.98M
Name Market Value Shares Shares
Change 		Shares
Change %
AIM
1
ARK Investment Management
Florida
$43M 36,478,441 +434,079 +1%
BlackRock
2
BlackRock
New York
$27.7M 23,455,252 -1,139,521 -5%
MA
3
Madrone Advisors
California
$27.6M 23,391,915 – –
EDRH
4
Edmond de Rothschild Holding
Switzerland
$25.8M 21,855,180 +508,700 +2%
SoftBank Group
5
SoftBank Group
Japan
$24.1M 20,451,570 – –
Vanguard Group
6
Vanguard Group
Pennsylvania
$19.2M 16,263,464 +1,036,606 +7%
Sumitomo Mitsui Trust Group
7
Sumitomo Mitsui Trust Group
Japan
$11.3M 9,565,331 -613,170 -6%
NAMA
8
Nikko Asset Management Americas
New York
$11.2M 9,565,331 -613,170 -6%
State Street
9
State Street
Massachusetts
$7.53M 6,379,592 -47,383 -0.7%
Geode Capital Management
10
Geode Capital Management
Massachusetts
$7.46M 6,317,242 +54,317 +0.9%
T. Rowe Price Investment Management
11
T. Rowe Price Investment Management
Maryland
$5.77M 4,888,612 -8,232 -0.2%
Morgan Stanley
12
Morgan Stanley
New York
$3.98M 3,371,732 -2,279,826 -40%
JSP
13
Jackson Square Partners
California
$3.92M 3,320,361 -1,788,905 -35%
KOC
14
Koss-Olinger Consulting
Florida
$3.54M 3,000,000 +1,000,000 +50%
Northern Trust
15
Northern Trust
Illinois
$2.87M 2,434,689 -80,135 -3%
UBS Group
16
UBS Group
Switzerland
$2.7M 2,284,278 +798,263 +54%
Millennium Management
17
Millennium Management
New York
$2.6M 2,204,044 -14,861,287 -87%
Charles Schwab
18
Charles Schwab
California
$2.5M 2,121,524 -54,728 -3%
Goldman Sachs
19
Goldman Sachs
New York
$2.2M 1,864,483 -2,928,293 -61%
SM
20
Senvest Management
New York
$1.29M 1,093,954 – –
SFM
21
Soros Fund Management
New York
$1.18M 1,000,000 -1,372,265 -58%
BLAM
22
Bourne Lent Asset Management
New York
$1.15M 972,255 +28,500 +3%
HA
23
HHLR Advisors
Cayman Islands
$1.08M 918,892 – –
Bank of New York Mellon
24
Bank of New York Mellon
New York
$1.02M 863,639 -4,340,328 -83%
Nordea Investment Management
25
Nordea Investment Management
Sweden
$1.01M 884,642 +367,457 +71%
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