# NAPCO SEC TECHNOLOGIES INC (NSSC) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 630402105
Page URL: https://superinvestorclub.com/stock/NSSC
Last updated: 2026-07-08T12:26:27.650Z

## Summary

As of the most recent 13F filing period, NAPCO SEC TECHNOLOGIES INC (NSSC) is held by 1 tracked superinvestors with an aggregate position value of $15.1M representing 0383596 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Terry Smith](https://superinvestorclub.com/manager/23) | Fundsmith | 383596 | $15.1M | 0.12% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2025-06-30: 1 holders, $28.4M aggregate, 0954912 shares
- 2025-09-30: 2 holders, $77.0M aggregate, 0177985712567 shares
- 2025-12-31: 2 holders, $74.7M aggregate, 0177985712567 shares
- 2026-03-31: 1 holders, $15.1M aggregate, 0383596 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "NAPCO SEC TECHNOLOGIES INC (NSSC) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/NSSC), aggregating SEC 13F, Form 4, and congressional disclosures."