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Ticker · held by 3 filers

WPRT

WESTPORT FUEL SYSTEMS INC

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

Total value held
$255.6K
Total shares
160,933
Filers holding
3 · 5 positions
Caveat
long only · 13F-eligible managers only
Filers holding WPRT
# Filer Class Shares Value (USD) % of port
1 Citadel Advisors · Ken Griffin CALLCOM 106,300 $166.9K 0.00%
2 Citadel Advisors · Ken Griffin COM 28,186 $44.3K 0.00%
3 Citadel Advisors · Ken Griffin PUTCOM 15,700 $24.6K 0.00%
4 Renaissance Technologies · Jim Simons (founder) COM 10,023 $15.7K 0.00%
5 BlackRock · Larry Fink COM 724 $4.0K 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 WPRT 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