NSSCNapco Security Technologies, Inc.

$35.75

Who owns NSSC

265 institutions reported holding NSSC for 2026Q1, together 94% of the company, more than the 250 a quarter earlier.

265

Institutions reporting a position · as of 2026Q1 · up from 250 the quarter before

Shares held by institutions
33.6M

Shares held by institutions · 94% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.32B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
39%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
44
Positions exited
33
Added to
94
Reduced
88
Top 10 holdersof the company
51%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q126533.6M$1.32B
2025Q425030.5M$1.27B
2025Q323730.8M$1.32B
2025Q221831.7M$941M
2025Q122530.9M$712M
2024Q424833.0M$1.18B
2024Q325833.1M$1.34B
2024Q226832.9M$1.71B
2024Q123331.2M$1.25B
2023Q418829.4M$1.01B
2023Q317328.3M$630M
2023Q222632.3M$1.12B
2023Q119430.1M$1.13B
2022Q416527.8M$764M
2022Q314925.2M$731M
2022Q211424.8M$512M
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.5.7M16%$224M
VANGUARD GROUP INC3.3M9.2%$129M
Copeland Capital Management, LLC2.0M5.6%$79M
STATE STREET CORP1.4M4.0%$57M
HENDERSON GROUP PLC1.4M4.0%$56M
GEODE CAPITAL MANAGEMENT LLC1.1M3.1%$44M
WELLINGTON MANAGEMENT GROUP LLP0.9M2.6%$37M
ARROWSTREET CAPITAL LIMITED PARTNERSHIP0.8M2.4%$33M
PRUDENTIAL FINANCIAL INC0.8M2.1%$30M
DIMENSIONAL FUND ADVISORS LP0.7M2.0%$28M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

reading the register…