Ticker · held by 3 filers

NSSC

NAPCO SEC TECHNOLOGIES INC

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

Total value held

$160.9M

Total shares

3,192,970

Filers holding

3 · 4 positions

Caveat

long only · 13F-eligible managers only

Filers holding NSSC

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 2,710,725 $140.8M 0.00%

2 Renaissance Technologies · Jim Simons (founder) COM 333,200 $13.9M 0.02%

3 Citadel Advisors · Ken Griffin COM 142,545 $5.9M 0.00%

4 Citadel Advisors · Ken Griffin CALLCOM 6,500 $271.1K 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 NSSC 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