Ticker · CUSIP 630402105

NSSC

NAPCO SEC TECHNOLOGIES INC
···Share
Holders (tracked)
13
Combined shares
2,528,974
Combined value
$104.40M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 8.
13132024Q12025Q4

SEC event timeline

23 events
  1. −34,479 shares · 2025Q4
    13F
  2. −88,534 shares · 2025Q4
    13F
  3. +200,489 shares · 2025Q4
    13F
  4. −20,250 shares · 2025Q4
    13F
  5. +26,600 shares · 2025Q4
    13F
  6. −49,311 shares · 2025Q4
    13F
  7. +130,599 shares · 2025Q4
    13F
  8. +985 shares · 2025Q4
    13F
  9. −129,559 shares · 2025Q4
    13F
  10. +18,100 shares · 2025Q4
    13F
  11. +22,935 shares · 2025Q4
    13F
  12. −9,600 shares · 2025Q4
    13F
  13. −197,433 shares · 2025Q3
    13F
  14. +48,547 shares · 2025Q3
    13F
  15. −14,031 shares · 2025Q3
    13F
  16. −22,920 shares · 2025Q3
    13F
  17. −202,616 shares · 2025Q3
    13F
  18. +1,154 shares · 2025Q3
    13F
  19. −30,365 shares · 2025Q3
    13F
  20. +23,627 shares · 2025Q3
    13F
  21. −200,835 shares · 2025Q3
    13F
  22. +16,300 shares · 2025Q3
    13F
  23. −40,300 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
Added to3
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
5
$40.5M
2022Q2
5
$40.8M
2022Q3
9
$2.7M
2022Q4
11
$74.1M
2023Q1
13
$118.7M
2023Q2
14
$116.7M
2023Q3
12
$67.1M
2023Q4
7
$100.9M
2024Q1
13
$156.9M
2024Q2
12
$216.0M
2024Q3
9
$47.6M
2024Q4
10
$65.7M
2025Q1
10
$58.4M
2025Q2
13
$88.2M
2025Q3
10
$104.7M
2025Q4
13
$104.4M

Who owns NSSC

13 super-investors · 2025Q4
Tracked stake
2.53M
shares
Combined value
$104M
% of shares outstanding
shares-out unknown
Quarter action mix
New3Added3Trim7
#ManagerSharesValue
1Wellington Management879.3K$37M
2Renaissance Technologies333.2K$14M
3AQR Capital Management297.0K$12M
4Steve Cohen
Point72
257.8K$11M
5Paul Tudor Jones
Tudor Investment
200.5K$8M
6Mario Gabelli
GAMCO
188.4K$8M
7Ken Griffin
Citadel Advisors
142.5K$6M
8D.E. Shaw & Co.75.4K$3M
9Izzy Englander
Millennium Mgmt
73.5K$3M
10Two Sigma Investments26.6K$1M
11Norges Bank
Norway SWF
22.9K$956K
12Ken Griffin
Citadel Advisors
6.5K$271K
13T. Rowe Price25.3K$1K

Recent moves

20 transactions
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