Latest Period
Q1 2026
Security Snapshot
NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC) Institutional Ownership
CUSIP: 630402105
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
269
Shares (Excl. Options)
34,660,055
Price
$39.39
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- Security type / class
- Equity / Common Stock
- Symbol
- NSSC on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 34,660,055
- Total 13F value
- $1,365,441,079
- Portfolio coverage rank
- 0%
- Share change
- +2,801,933
- Value change
- +$107,795,983
- Number of holders
- 269
- Shares outstanding
- 35,876,571
- SEC-reported price per share
- $37.98
- Insider filing price
- $37.98
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- NSSC - NAPCO SECURITY TECHNOLOGIES, INC - Common Stock is tracked under CUSIP 630402105.
- 269 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 269 to 22 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $1,365,441,079 to $28,450,609.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 269 institutions filings for Q1 2026.
Security key
630402105
Latest holder period
Q1 2026
13F holders
269
13D/G owners
3
CIK / CUSIP context first
Open Q1 2026 holders
NSSC full holder history
NAPCO SECURITY TECHNOLOGIES, INC SEC filings
NAPCO SECURITY TECHNOLOGIES, INC company facts
NAPCO SECURITY TECHNOLOGIES, INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 630402105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
NSSC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | +89% | $210,755,020 | +$99,734,371 | 5,350,443 | +90% | BlackRock, Inc. | 31 Mar 2026 |
| Copeland Capital Management, LLC | 5.6% | $80,845,701 | 2,009,088 | Copeland Capital Management, LLC | 31 Mar 2026 | |||
| FMR LLC | 3% | $24,911,405 | 1,094,045 | FMR LLC | 31 Mar 2025 |
As of 31 Mar 2026, 269 institutional investors reported holding 34,660,055 shares of NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC). This represents 97% of the company’s total 35,876,571 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 16% | 5,681,770 | +76% | 0% | $223,804,902 |
| Copeland Capital Management, LLC | 5.6% | 2,009,089 | +41% | 1.8% | $79,138,055 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 1,505,177 | 0% | 0% | $59,288,922 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.1% | 1,464,212 | 0% | 0% | $57,675,311 |
| STATE STREET CORP | 4% | 1,431,503 | +60% | 0% | $56,519,754 |
| JANUS HENDERSON GROUP PLC | 4% | 1,424,963 | -9.2% | 0.03% | $56,142,729 |
| GEODE CAPITAL MANAGEMENT, LLC | 3.1% | 1,108,092 | +7.7% | 0% | $43,654,277 |
| WELLINGTON MANAGEMENT GROUP LLP | 2.6% | 929,599 | +5.7% | 0.01% | $36,616,906 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.4% | 846,040 | -2.1% | 0.02% | $33,325,516 |
| PRUDENTIAL FINANCIAL INC | 2.1% | 750,030 | 0.04% | $29,543,682 | |
| DIMENSIONAL FUND ADVISORS LP | 2% | 702,852 | +4.7% | 0.01% | $27,682,703 |
| FIRST TRUST ADVISORS LP | 1.9% | 685,189 | -4.1% | 0.02% | $26,989,594 |
| Doma Perpetual Capital Management LLC | 1.8% | 627,931 | 0% | 6.6% | $24,734,202 |
| NORTHERN TRUST CORP | 1.6% | 584,327 | -2.3% | 0% | $23,016,640 |
| Point72 Asset Management, L.P. | 1.3% | 482,272 | +87% | 0.03% | $18,996,694 |
| ROYAL BANK OF CANADA | 1.3% | 476,558 | -18% | 0% | $18,772,000 |
| MORGAN STANLEY | 1.3% | 464,861 | +9.8% | 0% | $18,310,931 |
| RENAISSANCE TECHNOLOGIES LLC | 1.2% | 436,800 | +31% | 0.03% | $17,205,552 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.2% | 412,788 | -0.53% | 0.07% | $16,259,719 |
| GOLDMAN SACHS GROUP INC | 1.1% | 403,294 | +30% | 0% | $15,885,769 |
| Fundsmith LLP | 1.1% | 383,596 | -78% | 0.12% | $15,109,846 |
| ENVESTNET ASSET MANAGEMENT INC | 1% | 375,638 | +2.7% | 0% | $14,796,362 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.94% | 338,560 | +7.5% | 0% | $13,335,878 |
| Bank of New York Mellon Corp | 0.84% | 302,967 | +40% | 0% | $11,933,881 |
| BESSEMER GROUP INC | 0.82% | 292,867 | +1888% | 0.02% | $11,537,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 750,860 | $28,450,609 | +$266,353 | $37.98 | 22 |
| 2026 Q1 | 34,660,055 | $1,365,441,079 | +$107,795,983 | $39.39 | 269 |
| 2025 Q4 | 31,604,650 | $1,318,076,518 | -$10,375,001 | $41.70 | 253 |
| 2025 Q3 | 31,802,609 | $1,366,019,283 | -$9,620,208 | $42.95 | 238 |
| 2025 Q2 | 32,261,377 | $957,961,688 | +$26,183,630 | $29.69 | 219 |
| 2025 Q1 | 31,537,442 | $726,162,629 | -$99,336,020 | $23.02 | 223 |
| 2024 Q4 | 33,678,940 | $1,197,766,079 | -$4,088,992 | $35.56 | 249 |
| 2024 Q3 | 33,582,443 | $1,358,923,161 | -$66,138,501 | $40.46 | 259 |
| 2024 Q2 | 33,355,451 | $1,732,781,239 | +$105,764,060 | $51.95 | 268 |
| 2024 Q1 | 31,581,841 | $1,266,739,175 | +$68,893,895 | $40.16 | 237 |
| 2023 Q4 | 29,639,068 | $1,015,173,799 | +$30,619,095 | $34.25 | 188 |
| 2023 Q3 | 28,596,322 | $636,384,719 | -$147,508,629 | $22.25 | 176 |
| 2023 Q2 | 32,342,073 | $1,120,745,718 | +$68,396,837 | $34.65 | 227 |
| 2023 Q1 | 30,082,692 | $1,130,420,537 | +$89,106,085 | $37.58 | 193 |
| 2022 Q4 | 28,243,664 | $776,146,479 | +$69,230,015 | $27.48 | 165 |
| 2022 Q3 | 25,539,046 | $742,508,393 | +$22,658,289 | $29.08 | 144 |
| 2022 Q2 | 24,723,989 | $509,067,223 | +$8,119,520 | $20.59 | 111 |
| 2022 Q1 | 24,308,638 | $498,198,882 | +$240,138,120 | $20.52 | 112 |
| 2021 Q4 | 11,835,188 | $591,509,182 | -$16,294,717 | $49.98 | 119 |
| 2021 Q3 | 12,254,400 | $528,035,189 | -$3,140,727 | $43.08 | 104 |
| 2021 Q2 | 12,348,766 | $449,063,464 | -$4,022,377 | $36.37 | 98 |
| 2021 Q1 | 12,442,697 | $433,369,893 | +$38,502,801 | $34.83 | 99 |
| 2020 Q4 | 11,505,666 | $301,681,810 | +$68,538,350 | $26.22 | 96 |
| 2020 Q3 | 8,841,925 | $207,808,471 | +$4,021,511 | $23.50 | 86 |
| 2020 Q2 | 8,668,313 | $202,680,315 | +$7,991,818 | $23.39 | 96 |