Security key
630402105
NAPCO SECURITY TECHNOLOGIES, INC - Common Stock, par value $0.01 per share (NSSC)
CUSIP: 630402105
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock, par value $0.01 per share
- Total 13F shares
- 34,675,803
- Total 13F value
- $1,366,061,528
- Share change
- +2,804,633
- SEC-reported price per share
- $39.39
- Number of holders
- 270
- Value change
- +$107,902,383
- Number of buys
- 140
- Number of sells
- 125
- Shares outstanding
- 35,884,224
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
270
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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 15%.
15 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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
15%
FMR LLC
3%
Michael Carrieri
0.07%
VANGUARD GROUP INC
8%
Fundsmith LLP
5%
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
Company
|
15%
|
$210,755,020
5,350,443 shares
|
+$99,734,371 | 31 Mar 2026 |
| FMR LLC |
13D/G
|
3%
|
$24,911,405
1,094,045 shares
|
$0 | 31 Mar 2025 |
| Michael Carrieri |
3/4/5
Executive VP of Engineering
|
0.07%
|
$1,256,790
26,610 shares
|
— | 26 Feb 2026 |
| VANGUARD GROUP INC |
13F
Company
|
8%
|
$120,182,028
2,882,063 shares
|
— | 31 Dec 2025 |
| Fundsmith LLP |
13F
Company
|
5%
|
$74,220,037
1,779,857 shares
|
— | 31 Dec 2025 |
| Janus Henderson Group Ltd. |
13F
Company
|
4.4%
|
$65,456,792
1,569,363 shares
|
— | 31 Dec 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 Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
270
Shares
34,675,803
Rows available
270
| 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 Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
270
Q1 2026 holders
270
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend