QTRX Quanterix Corporation

NASDAQ
$2.50

Quanterix Corporation (QTRX) 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
+12.50
9 buyers / 7 sellers
BUYING
Funds compared
16
funds with comparable QTRX positions
13 current holders · 12 prior-quarter holders
Net share change
+170.2K
+2.16M added, -1.99M cut
Position activity
4 new 5 increased 4 reduced 3 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
RENAISSANCE TECHNOLOGIES LLC Quant Sold Out -136.2K -100.0% $588.4K 0.0% 58
D. E. Shaw & Co., Inc. Quant New +17.7K — $76.3K 0.0% 58
TWO SIGMA INVESTMENTS, LP Quant Sold Out -35.2K -100.0% $152.0K 0.0% 57
Qube Research & Technologies Ltd Quant New +12.0K — $51.8K 0.0% 55
Point72 Asset Management, L.P. Increased +132.4K +142.0% $572.0K 0.0% 53
Quadrature Capital Quant New +80.2K — $346.5K 0.0% 52
Jain Global Long/Short Quant New +57.3K — $247.6K 0.0% 52
CITADEL ADVISORS LLC Quant Increased +168.7K +276.6% $728.9K 0.0% 52
MILLENNIUM MANAGEMENT LLC Reduced -648.5K -94.1% $2.8M 0.0% 52
Brevan Howard Capital Management Macro Sold Out -87.4K -100.0% $377.5K 0.0% 49

Most significant buyers

By move score, not size.

  • D. E. Shaw & Co., Inc. New · +17.7K
  • Qube Research & Technologies Ltd New · +12.0K
  • Point72 Asset Management, L.P. Increased · +132.4K
  • Quadrature Capital New · +80.2K
  • Jain Global New · +57.3K

Most significant sellers

By move score, not size.

  • RENAISSANCE TECHNOLOGIES LLC Sold Out · -136.2K
  • TWO SIGMA INVESTMENTS, LP Sold Out · -35.2K
  • MILLENNIUM MANAGEMENT LLC Reduced · -648.5K
  • Brevan Howard Capital Management Sold Out · -87.4K
  • Schonfeld Strategic Advisors Reduced · -30.1K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
RENAISSANCE TECHNOLOGIES LLC 1 0 136.2K -136.2K -100.0% 0.0% Sold Out 58
D. E. Shaw & Co., Inc. 1 17.7K 0 +17.7K — 0.0% New 58
TWO SIGMA INVESTMENTS, LP 2 0 35.2K -35.2K -100.0% 0.0% Sold Out 57
Qube Research & Technologies Ltd 2 12.0K 0 +12.0K — 0.0% New 55
Point72 Asset Management, L.P. 1 225.7K 93.3K +132.4K +142.0% 0.0% Increased 53
Quadrature Capital 3 80.2K 0 +80.2K — 0.0% New 52
Jain Global 3 57.3K 0 +57.3K — 0.0% New 52
CITADEL ADVISORS LLC 1 229.7K 61.0K +168.7K +276.6% 0.0% Increased 52
MILLENNIUM MANAGEMENT LLC 2 40.7K 689.2K -648.5K -94.1% 0.0% Reduced 52
Brevan Howard Capital Management 3 0 87.4K -87.4K -100.0% 0.0% Sold Out 49
AQR Capital Management 3 1.3M 84.1K +1.26M +1496.3% 0.0% Increased 47
MARSHALL WACE, LLP 2 973.9K 622.4K +351.5K +56.5% 0.0% Increased 41
Schonfeld Strategic Advisors 3 12.7K 42.8K -30.1K -70.4% 0.0% Reduced 37
Portolan Capital Management 3 1.9M 2.9M -1.05M -35.5% 0.3% Reduced 35
Tudor Investment Corporation 2 400.4K 316.0K +84.4K +26.7% 0.0% Increased 29
Engineers Gate 4 14.8K 23.8K -9.0K -37.8% 0.0% Reduced 26

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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.