QSI Quantum-Si Incorporated

NASDAQ
$0.73

Quantum-Si Incorporated (QSI) 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
+14.29
8 buyers / 6 sellers
BUYING
Funds compared
14
funds with comparable QSI positions
9 current holders · 8 prior-quarter holders
Net share change
+3.64M
+3.81M added, -173.6K cut
Position activity
6 new 2 increased 1 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
Point72 Asset Management, L.P. New +39.1K — $34.6K 0.0% 59
MILLENNIUM MANAGEMENT LLC New +3.13M — $2.8M 0.0% 59
Balyasny Asset Management L.P. New +13.6K — $12.1K 0.0% 57
TWO SIGMA INVESTMENTS, LP Quant Sold Out -52.9K -100.0% $46.8K 0.0% 57
Wolverine Asset Management Event Quant Sold Out -6.2K -100.0% $5.5K 0.0% 54
RENAISSANCE TECHNOLOGIES LLC Quant Increased +436.0K +369.8% $385.8K 0.0% 52
CITADEL ADVISORS LLC Quant Increased +28.8K +185.2% $25.5K 0.0% 52
Walleye Capital Long/Short Quant Sold Out -312 -100.0% $276 0.0% 51
Schonfeld Strategic Advisors Long/Short Quant New +10.4K — $9.2K 0.0% 51
Graham Capital Management Quant Macro Sold Out -12.2K -100.0% $10.8K 0.0% 49

Most significant buyers

By move score, not size.

  • Point72 Asset Management, L.P. New · +39.1K
  • MILLENNIUM MANAGEMENT LLC New · +3.13M
  • Balyasny Asset Management L.P. New · +13.6K
  • RENAISSANCE TECHNOLOGIES LLC Increased · +436.0K
  • CITADEL ADVISORS LLC Increased · +28.8K

Most significant sellers

By move score, not size.

  • TWO SIGMA INVESTMENTS, LP Sold Out · -52.9K
  • Wolverine Asset Management Sold Out · -6.2K
  • Walleye Capital Sold Out · -312
  • Graham Capital Management Sold Out · -12.2K
  • Quantbot Technologies Sold Out · -58.5K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Point72 Asset Management, L.P. 1 39.1K 0 +39.1K — 0.0% New 59
MILLENNIUM MANAGEMENT LLC 2 3.1M 0 +3.13M — 0.0% New 59
Balyasny Asset Management L.P. 2 13.6K 0 +13.6K — 0.0% New 57
TWO SIGMA INVESTMENTS, LP 2 0 52.9K -52.9K -100.0% 0.0% Sold Out 57
Wolverine Asset Management 2 0 6.2K -6.2K -100.0% 0.0% Sold Out 54
RENAISSANCE TECHNOLOGIES LLC 1 553.9K 117.9K +436.0K +369.8% 0.0% Increased 52
CITADEL ADVISORS LLC 1 44.3K 15.5K +28.8K +185.2% 0.0% Increased 52
Walleye Capital 3 0 312 -312 -100.0% 0.0% Sold Out 51
Schonfeld Strategic Advisors 3 10.4K 0 +10.4K — 0.0% New 51
Graham Capital Management 3 0 12.2K -12.2K -100.0% 0.0% Sold Out 49
Winton Group 4 75.8K 0 +75.8K — 0.0% New 48
Y-Intercept 4 79.1K 0 +79.1K — 0.0% New 48
Quantbot Technologies 4 0 58.5K -58.5K -100.0% 0.0% Sold Out 45
AQR Capital Management 3 2.3M 2.4M -43.5K -1.8% 0.0% Reduced 20

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.