PACB Pacific Biosciences of California, Inc.

NASDAQ
$1.34

Pacific Biosciences of California, Inc. (PACB) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+16.67
14 buyers / 10 sellers
BUYING
Funds compared
25
funds with comparable PACB positions
20 current holders · 20 prior-quarter holders
Net share change
+5.06M
+8.98M added, -3.91M cut
Position activity
5 new 9 increased 5 reduced 5 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Bridgewater Associates Quant Macro New +102.8K — $172.6K 0.0% 61
Point72 Asset Management, L.P. Increased +4.50M +1575.6% $7.6M 0.0% 55
Squarepoint Ops LLC Quant New +41.8K — $70.2K 0.0% 54
Man Group Event Long/Short New +597.3K — $1.0M 0.0% 54
Hudson Bay Capital Management Event Sold Out -14.3K -100.0% $24.0K 0.0% 53
Caxton Associates Macro Sold Out -353.1K -100.0% $593.3K 0.0% 53
ExodusPoint Capital Management Long/Short Quant New +17.0K — $28.6K 0.0% 52
Farallon Capital Management Event Value Reduced -120.8K -89.5% $202.9K 0.0% 51
Balyasny Asset Management L.P. Increased +303.8K +116.6% $510.4K 0.0% 51
Voleon Capital Management Quant New +134.8K — $226.5K 0.0% 51

Most significant buyers

By move score, not size.

  • Bridgewater Associates New · +102.8K
  • Point72 Asset Management, L.P. Increased · +4.50M
  • Squarepoint Ops LLC New · +41.8K
  • Man Group New · +597.3K
  • ExodusPoint Capital Management New · +17.0K

Most significant sellers

By move score, not size.

  • Hudson Bay Capital Management Sold Out · -14.3K
  • Caxton Associates Sold Out · -353.1K
  • Farallon Capital Management Reduced · -120.8K
  • Brevan Howard Capital Management Sold Out · -10.8K
  • Graham Capital Management Sold Out · -42.2K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Bridgewater Associates 1 102.8K 0 +102.8K — 0.0% New 61
Point72 Asset Management, L.P. 1 4.8M 285.7K +4.50M +1575.6% 0.0% Increased 55
Squarepoint Ops LLC 2 41.8K 0 +41.8K — 0.0% New 54
Man Group 3 597.3K 0 +597.3K — 0.0% New 54
Hudson Bay Capital Management 3 0 14.3K -14.3K -100.0% 0.0% Sold Out 53
Caxton Associates 3 0 353.1K -353.1K -100.0% 0.0% Sold Out 53
ExodusPoint Capital Management 3 17.0K 0 +17.0K — 0.0% New 52
Farallon Capital Management 1 14.2K 135.0K -120.8K -89.5% 0.0% Reduced 51
Balyasny Asset Management L.P. 2 564.3K 260.5K +303.8K +116.6% 0.0% Increased 51
Voleon Capital Management 3 134.8K 0 +134.8K — 0.0% New 51
MARSHALL WACE, LLP 2 163.6K 81.3K +82.3K +101.3% 0.0% Increased 50
Brevan Howard Capital Management 3 0 10.8K -10.8K -100.0% 0.0% Sold Out 49
Graham Capital Management 3 0 42.2K -42.2K -100.0% 0.0% Sold Out 49
CITADEL ADVISORS LLC 1 2.8M 1.6M +1.27M +80.6% 0.0% Increased 49
Aquatic Capital Management 4 0 24.6K -24.6K -100.0% 0.0% Sold Out 48
Qube Research & Technologies Ltd 2 298.0K 1.2M -887.0K -74.9% 0.0% Reduced 45
RENAISSANCE TECHNOLOGIES LLC 1 966.2K 2.5M -1.52M -61.2% 0.0% Reduced 45
Quantbot Technologies 4 11.9K 1 +11.9K +1194800.0% 0.0% Increased 39
Quadrature Capital 3 185.7K 112.5K +73.2K +65.0% 0.0% Increased 38
AQR Capital Management 3 1.3M 759.5K +537.2K +70.7% 0.0% Increased 37
MILLENNIUM MANAGEMENT LLC 2 4.0M 4.9M -929.9K -19.0% 0.0% Reduced 33
TWO SIGMA INVESTMENTS, LP 2 4.2M 3.5M +733.0K +20.9% 0.0% Increased 33
D. E. Shaw & Co., Inc. 1 4.2M 3.6M +570.6K +15.7% 0.0% Increased 31
Engineers Gate 4 45.3K 52.3K -7.0K -13.3% 0.0% Reduced 20
Tudor Investment Corporation 2 684.7K 684.7K 0 +0.0% 0.0% Unchanged 18

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.