FSTR L.B. Foster Company

NASDAQ
$36.97

L.B. Foster Company (FSTR) 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
+100.00
10 buyers / 0 sellers
STRONG BUYING
Funds compared
10
funds with comparable FSTR positions
10 current holders · 5 prior-quarter holders
Net share change
+322.7K
+322.7K added, 0 cut
Position activity
5 new 5 increased 0 reduced 0 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
CITADEL ADVISORS LLC Quant New +31.9K — $1.4M 0.0% 60
Point72 Asset Management, L.P. New +13.5K — $610.9K 0.0% 59
TWO SIGMA INVESTMENTS, LP Quant New +144.2K — $6.5M 0.0% 59
Squarepoint Ops LLC Quant New +19.1K — $862.0K 0.0% 54
Quadrature Capital Quant New +13.7K — $620.7K 0.0% 53
MARSHALL WACE, LLP Long/Short Increased +31.3K +158.8% $1.4M 0.0% 52
AQR Capital Management Long/Short Quant Increased +6.1K +76.4% $273.8K 0.0% 39
Qube Research & Technologies Ltd Quant Increased +22.7K +45.0% $1.0M 0.0% 37
RENAISSANCE TECHNOLOGIES LLC Quant Increased +40.0K +12.6% $1.8M 0.0% 33
MILLENNIUM MANAGEMENT LLC Increased +183 +2.4% $8.3K 0.0% 27

Most significant buyers

By move score, not size.

  • CITADEL ADVISORS LLC New · +31.9K
  • Point72 Asset Management, L.P. New · +13.5K
  • TWO SIGMA INVESTMENTS, LP New · +144.2K
  • Squarepoint Ops LLC New · +19.1K
  • Quadrature Capital New · +13.7K

Most significant sellers

By move score, not size.

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
CITADEL ADVISORS LLC 1 31.9K 0 +31.9K — 0.0% New 60
Point72 Asset Management, L.P. 1 13.5K 0 +13.5K — 0.0% New 59
TWO SIGMA INVESTMENTS, LP 2 144.2K 0 +144.2K — 0.0% New 59
Squarepoint Ops LLC 2 19.1K 0 +19.1K — 0.0% New 54
Quadrature Capital 3 13.7K 0 +13.7K — 0.0% New 53
MARSHALL WACE, LLP 2 51.0K 19.7K +31.3K +158.8% 0.0% Increased 52
AQR Capital Management 3 14.0K 7.9K +6.1K +76.4% 0.0% Increased 39
Qube Research & Technologies Ltd 2 73.2K 50.5K +22.7K +45.0% 0.0% Increased 37
RENAISSANCE TECHNOLOGIES LLC 1 356.4K 316.4K +40.0K +12.6% 0.0% Increased 33
MILLENNIUM MANAGEMENT LLC 2 7.7K 7.5K +183 +2.4% 0.0% Increased 27

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.