GRC The Gorman-Rupp Company

AMX
$75.34

The Gorman-Rupp Company (GRC) 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
-6.67
7 buyers / 8 sellers
MIXED
Funds compared
15
funds with comparable GRC positions
11 current holders · 12 prior-quarter holders
Net share change
+11.4K
+130.6K added, -119.2K cut
Position activity
3 new 4 increased 4 reduced 4 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
Balyasny Asset Management L.P. Sold Out -7.5K -100.0% $691.1K 0.0% 57
Tudor Investment Corporation Macro New +33.7K $3.1M 0.0% 56
MILLENNIUM MANAGEMENT LLC Increased +37.8K +121.7% $3.5M 0.0% 53
Quadrature Capital Quant Sold Out -5.3K -100.0% $485.9K 0.0% 53
ExodusPoint Capital Management Long/Short Quant Sold Out -10.8K -100.0% $991.2K 0.0% 52
Man Group Event Long/Short Sold Out -3.5K -100.0% $317.5K 0.0% 52
Centiva Capital Long/Short Quant New +8.9K $817.7K 0.0% 48
Engineers Gate Quant New +2.6K $233.9K 0.0% 48
MARSHALL WACE, LLP Long/Short Reduced -18.4K -74.7% $1.7M 0.0% 46
RENAISSANCE TECHNOLOGIES LLC Quant Reduced -64.7K -46.2% $5.9M 0.0% 41

Most significant buyers

By move score, not size.

  • Tudor Investment Corporation New · +33.7K
  • MILLENNIUM MANAGEMENT LLC Increased · +37.8K
  • Centiva Capital New · +8.9K
  • Engineers Gate New · +2.6K
  • Quantbot Technologies Increased · +2.2K

Most significant sellers

By move score, not size.

  • Balyasny Asset Management L.P. Sold Out · -7.5K
  • Quadrature Capital Sold Out · -5.3K
  • ExodusPoint Capital Management Sold Out · -10.8K
  • Man Group Sold Out · -3.5K
  • MARSHALL WACE, LLP Reduced · -18.4K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Balyasny Asset Management L.P. 2 0 7.5K -7.5K -100.0% 0.0% Sold Out 57
Tudor Investment Corporation 2 33.7K 0 +33.7K 0.0% New 56
MILLENNIUM MANAGEMENT LLC 2 68.9K 31.1K +37.8K +121.7% 0.0% Increased 53
Quadrature Capital 3 0 5.3K -5.3K -100.0% 0.0% Sold Out 53
ExodusPoint Capital Management 3 0 10.8K -10.8K -100.0% 0.0% Sold Out 52
Man Group 3 0 3.5K -3.5K -100.0% 0.0% Sold Out 52
Centiva Capital 4 8.9K 0 +8.9K 0.0% New 48
Engineers Gate 4 2.6K 0 +2.6K 0.0% New 48
MARSHALL WACE, LLP 2 6.2K 24.7K -18.4K -74.7% 0.0% Reduced 46
RENAISSANCE TECHNOLOGIES LLC 1 75.3K 140.0K -64.7K -46.2% 0.0% Reduced 41
Quantbot Technologies 4 3.3K 1.2K +2.2K +184.5% 0.0% Increased 39
TWO SIGMA INVESTMENTS, LP 2 109.2K 82.4K +26.9K +32.6% 0.0% Increased 36
CITADEL ADVISORS LLC 1 3.5K 5.4K -1.8K -34.3% 0.0% Reduced 35
Trexquant Investment 3 74.1K 55.6K +18.5K +33.4% 0.0% Increased 30
AQR Capital Management 3 28.2K 35.2K -7.1K -20.1% 0.0% Reduced 25

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.