Security key
630402105
NAPCO SECURITY TECHNOLOGIES, INC - Common Stock, par value $0.01 per share (NSSC)
CUSIP: 630402105
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.01 per share
- Total 13F shares
- 31,604,650
- Total 13F value
- $1,318,076,518
- Share change
- -224,259
- Put/Call ratio
- 4%
- SEC-reported price per share
- $41.70
- Number of holders
- 253
- Value change
- -$10,375,001
- Number of buys
- 111
- Number of sells
- 118
- Shares outstanding
- 35,884,224
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
253
Top holders
10
NSSC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
NAPCO SECURITY TECHNOLOGIES, INC SEC filings
NAPCO SECURITY TECHNOLOGIES, INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 630402105
Recent filing periods:
Ownership snapshot
Top reported holders of NSSC - NAPCO SECURITY TECHNOLOGIES, INC - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
BlackRock, Inc.
Comparable rows
1/15
Latest evidence
30 Sep 2025
13D/G
13F
Lead comparable stake: 3%
14 rows are not safely comparable across share classes.
13D/G row: FMR LLC
Showing 1-6 of 15 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 3%.
1 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 1
FMR LLC
3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
Company
|
3%
Reported 13D/G
· 31 Mar 2025
|
$24,911,405
1,094,045 shares
|
$0 | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$123,862,842
2,883,885 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$122,425,497
2,850,419 shares
|
— | 30 Sep 2025 |
| Fundsmith LLP |
13F
Company
|
—
denominator unverified
|
$76,444,858
1,779,857 shares
|
— | 30 Sep 2025 |
| Janus Henderson Group Ltd. |
13F
Company
|
—
denominator unverified
|
$65,466,067
1,524,270 shares
|
— | 30 Sep 2025 |
| Copeland Capital Management, LLC |
13F
Company
|
—
denominator unverified
|
$64,318,206
1,497,512 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
253
Shares
31,604,650
Rows available
253
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
238
Q4 2025 holders
253
Holder diff
15
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend