Ticker · held by 4 filers

FIX

COMFORT SYS USA INC

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

Total value held

$1.61B

Total shares

4,837,399

Filers holding

4 · 6 positions

Caveat

long only · 13F-eligible managers only

Filers holding FIX

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 4,619,381 $1.40B 0.03%

2 Bridgewater Associates · Ray Dalio (founder) COM 68,199 $63.6M 0.23%

3 Citadel Advisors · Ken Griffin PUTCOM 57,700 $53.9M 0.01%

4 Renaissance Technologies · Jim Simons (founder) COM 53,980 $50.4M 0.08%

5 Citadel Advisors · Ken Griffin CALLCOM 29,000 $27.1M 0.00%

6 Citadel Advisors · Ken Griffin COM 9,139 $8.5M 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 FIX 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