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NAPCO Security Technologies NSSC · USD

Information Technology · US listing · 🇺🇸 United States

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31.43

+3.94%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
BLACKROCK, INC.5.7m15.93%+2.5m31 Mar 2026
The Vanguard Group, Inc.2.9m8.06%+31.6k31 Dec 2025
BlackRock Institutional Trust Company, N.A.2.5m7.15%+156.7k31 Dec 2025
COPELAND CAPITAL MANAGEMENT, LLC2m5.63%+588.3k31 Mar 2026
Fundsmith LLP1.8m4.99%—31 Dec 2025
Janus Henderson Investors1.6m4.40%+45.1k31 Dec 2025
VANGUARD CAPITAL MANAGEMENT LLC1.5m4.22%+1.5m31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC1.5m4.11%+1.5m31 Mar 2026
STATE STREET CORP1.4m4.01%+535.2k31 Mar 2026
JANUS HENDERSON GROUP PLC1.4m4.00%−144.4k31 Mar 2026
Copeland Capital Management, LLC1.4m3.98%−76.7k31 Dec 2025
Soloway (Richard L)1.4m3.90%−124.1k10 Feb 2026
GEODE CAPITAL MANAGEMENT, LLC1.1m3.11%+79.2k31 Mar 2026
Geode Capital Management, L.L.C.1m2.89%+4.3k31 Dec 2025
WELLINGTON MANAGEMENT GROUP LLP929.6k2.61%+50.3k31 Mar 2026

Insider trades

Purchases and sales by directors and officers, as filed with the regulator

DateWhoTypeSharesPriceValue
3 Mar 2026 ↗SOLOWAY RICHARDCEO, Chairman of Board, SecySale55.3k43.22$2.4m
2 Mar 2026 ↗SOLOWAY RICHARDCEO, Chairman of Board, SecySale129.7k44.99$5.8m

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

2.5m

+5.3% on the period before. 8.7 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

56.3%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 23 Sept 202661 shares
  • 18 Aug 202650 shares
  • 11 Aug 20266 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.