Ticker · held by 4 filers

FSS

FEDERAL SIGNAL CORP

All tracked filers currently holding FSS, ranked by position size. Each row links through to the filer's full portfolio.

Total value held

$797.1M

Total shares

9,470,380

Filers holding

4 · 6 positions

Caveat

long only · 13F-eligible managers only

Filers holding FSS

sorted by position size · click any filer to see their full portfolio

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 9,281,239 $776.6M 0.02%

2 Renaissance Technologies · Jim Simons (founder) COM 112,604 $12.2M 0.02%

3 Bridgewater Associates · Ray Dalio (founder) COM 41,869 $4.5M 0.02%

4 Citadel Advisors · Ken Griffin COM 30,568 $3.3M 0.00%

5 Citadel Advisors · Ken Griffin CALLCOM 2,200 $238.9K 0.00%

6 Citadel Advisors · Ken Griffin PUTCOM 1,900 $206.3K 0.00%

What this is

This page reverses the usual 13F view: instead of "what does Buffett hold," it answers "who holds NVDA?" Across the dozen tracked filers, all current 13F-disclosed holders of FSS are listed, with the position size and what fraction of each filer's overall portfolio it represents.

Caveats: only the filers tracked here are included (~12 names) — not the whole 13F universe (~6,000 filers). Position values are at the most recent quarter-end, not current market price. Only long positions are visible; shorts and synthetics aren't.

v0.2 · 2026 · data via SEC EDGAR · CUSIP→ticker via OpenFIGI