STAA STAAR Surgical Company

NASDAQ
$22.66

STAAR Surgical Company (STAA) 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
+7.69
14 buyers / 12 sellers
MIXED
Funds compared
26
funds with comparable STAA positions
19 current holders · 19 prior-quarter holders
Net share change
+1.40M
+3.79M added, -2.39M cut
Position activity
7 new 7 increased 5 reduced 7 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
Madison Avenue Partners Value Increased +1.73M +71.0% $49.8M 5.8% 70
MILLENNIUM MANAGEMENT LLC Sold Out -165.5K -100.0% $4.7M 0.0% 59
Point72 Asset Management, L.P. Increased +1.61M +196.1% $46.3M 0.1% 58
Balyasny Asset Management L.P. New +18.9K — $541.4K 0.0% 57
Soleus Capital Management Growth Healthcare Sold Out -20.0K -100.0% $573.8K 0.0% 57
MARSHALL WACE, LLP Long/Short Sold Out -11.4K -100.0% $328.5K 0.0% 56
Quinn Opportunity Partners Event Sold Out -633.3K -100.0% $18.2M 0.0% 56
Tudor Investment Corporation Macro Sold Out -52.1K -100.0% $1.5M 0.0% 56
RENAISSANCE TECHNOLOGIES LLC Quant Increased +205.2K +151.8% $5.9M 0.0% 54
Man Group Event Long/Short Sold Out -25.4K -100.0% $727.5K 0.0% 52

Most significant buyers

By move score, not size.

  • Madison Avenue Partners Increased · +1.73M
  • Point72 Asset Management, L.P. Increased · +1.61M
  • Balyasny Asset Management L.P. New · +18.9K
  • RENAISSANCE TECHNOLOGIES LLC Increased · +205.2K
  • Jain Global New · +28.7K

Most significant sellers

By move score, not size.

  • MILLENNIUM MANAGEMENT LLC Sold Out · -165.5K
  • Soleus Capital Management Sold Out · -20.0K
  • MARSHALL WACE, LLP Sold Out · -11.4K
  • Quinn Opportunity Partners Sold Out · -633.3K
  • Tudor Investment Corporation Sold Out · -52.1K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Madison Avenue Partners 2 4.2M 2.4M +1.73M +71.0% 5.8% Increased 70
MILLENNIUM MANAGEMENT LLC 2 0 165.5K -165.5K -100.0% 0.0% Sold Out 59
Point72 Asset Management, L.P. 1 2.4M 823.2K +1.61M +196.1% 0.1% Increased 58
Balyasny Asset Management L.P. 2 18.9K 0 +18.9K — 0.0% New 57
Soleus Capital Management 2 0 20.0K -20.0K -100.0% 0.0% Sold Out 57
MARSHALL WACE, LLP 2 0 11.4K -11.4K -100.0% 0.0% Sold Out 56
Quinn Opportunity Partners 4 0 633.3K -633.3K -100.0% 0.0% Sold Out 56
Tudor Investment Corporation 2 0 52.1K -52.1K -100.0% 0.0% Sold Out 56
RENAISSANCE TECHNOLOGIES LLC 1 340.4K 135.2K +205.2K +151.8% 0.0% Increased 54
Man Group 3 0 25.4K -25.4K -100.0% 0.0% Sold Out 52
Jain Global 3 28.7K 0 +28.7K — 0.0% New 52
Schonfeld Strategic Advisors 3 13.2K 0 +13.2K — 0.0% New 51
Boothbay Fund Management 4 37.2K 0 +37.2K — 0.0% New 51
AQR Capital Management 3 13.0K 0 +13.0K — 0.0% New 51
Y-Intercept 4 47.3K 0 +47.3K — 0.0% New 50
CITADEL ADVISORS LLC 1 233.4K 1.1M -826.0K -78.0% 0.0% Reduced 50
TWO SIGMA INVESTMENTS, LP 2 110.3K 559.6K -449.3K -80.3% 0.0% Reduced 50
Winton Group 4 0 32.6K -32.6K -100.0% 0.0% Sold Out 48
Engineers Gate 4 21.6K 0 +21.6K — 0.0% New 48
Capital Fund Management 3 34.7K 15.9K +18.7K +117.4% 0.0% Increased 47
Quantbot Technologies 4 13.4K 2.8K +10.6K +379.9% 0.0% Increased 39
Squarepoint Ops LLC 2 188.3K 346.7K -158.4K -45.7% 0.0% Reduced 37
D. E. Shaw & Co., Inc. 1 22.0K 27.8K -5.8K -21.0% 0.0% Reduced 32
Two Seas Capital 2 1.1M 1.0M +27.4K +2.6% 1.2% Increased 30
Centiva Capital 4 10.1K 18.7K -8.6K -46.1% 0.0% Reduced 29
Brevan Howard Capital Management 3 37.7K 35.9K +1.8K +4.9% 0.0% Increased 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.