NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
NSSC on Nasdaq
Shares outstanding
35,677,013
Price per share
$41.70
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
31,590,126
Total reported value
$1,317,459,709
% of total 13F portfolios
0%
Share change
-251,640
Value change
-$11,545,742
Number of holders
251
Price from insider filings
$41.70
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 7.8% $64,886,553 2,849,651 The Vanguard Group 31 Dec 2024
BlackRock, Inc. 7.9% $121,053,888 2,818,484 BlackRock, Inc. 30 Sep 2025
FMR LLC 3% $24,911,405 1,094,045 FMR LLC 31 Mar 2025

As of 31 Dec 2025, 251 institutional investors reported holding 31,590,126 shares of NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC). This represents 89% of the company’s total 35,677,013 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC) together control 62% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 9% 3,224,505 +12% 0% $134,461,841
VANGUARD GROUP INC 8.1% 2,882,063 +1.1% 0% $120,182,028
Fundsmith LLP 5% 1,779,857 0% 0.43% $74,220,037
JANUS HENDERSON GROUP PLC 4.4% 1,569,363 +3% 0.03% $65,456,792
Copeland Capital Management, LLC 4% 1,420,792 -5.1% 1.3% $59,247,043
GEODE CAPITAL MANAGEMENT, LLC 2.9% 1,028,863 +0.42% 0% $42,910,018
STATE STREET CORP 2.5% 896,315 +14% 0% $37,483,645
WELLINGTON MANAGEMENT GROUP LLP 2.5% 879,298 -13% 0.01% $36,666,727
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 2.4% 864,022 +0.33% 0.02% $36,029,717
Divisadero Street Capital Management, LP 2.3% 809,729 +626% 1.9% $33,765,699
FIRST TRUST ADVISORS LP 2% 714,382 +26% 0.02% $29,789,729
DIMENSIONAL FUND ADVISORS LP 1.9% 671,243 -1% 0.01% $27,991,180
Doma Perpetual Capital Management LLC 1.8% 627,931 -46% 7.4% $26,184,723
NORTHERN TRUST CORP 1.7% 597,918 -6.6% 0% $24,933,180
ROYAL BANK OF CANADA 1.6% 580,557 -10% 0% $24,211,000
MORGAN STANLEY 1.2% 423,516 +11% 0% $17,660,665
JACOBS LEVY EQUITY MANAGEMENT, INC 1.2% 414,990 -5.3% 0.07% $17,305,083
Qube Research & Technologies Ltd 1.1% 376,227 -11% 0.02% $15,688,666
ENVESTNET ASSET MANAGEMENT INC 1% 365,742 -13% 0% $15,251,459
RENAISSANCE TECHNOLOGIES LLC 0.93% 333,200 +5.7% 0.02% $13,894,440
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.88% 314,842 +2.7% 0% $13,128,911
BANK OF AMERICA CORP /DE/ 0.87% 310,600 +24% 0% $12,952,020
GOLDMAN SACHS GROUP INC 0.87% 310,269 +24% 0% $12,938,237
AQR CAPITAL MANAGEMENT LLC 0.83% 297,027 -10% 0.01% $12,386,019
Granite Investment Partners, LLC 0.79% 280,881 -5.7% 0.69% $11,712,738

Institutional Holders of NAPCO SECURITY TECHNOLOGIES, INC - Common Stock (NSSC) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 31,590,126 $1,317,459,709 -$11,545,742 $41.70 251
2025 Q3 31,816,831 $1,366,630,118 -$9,619,693 $42.95 239
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
2020 Q1 8,481,124 $128,613,822 -$30,924,371 $15.17 86
2019 Q4 9,046,606 $265,888,089 -$7,723,162 $29.39 104
2019 Q3 9,274,914 $236,714,338 +$31,105,946 $25.52 109
2019 Q2 8,000,046 $237,422,934 +$24,371,397 $29.68 111
2019 Q1 7,283,694 $151,060,649 +$12,972,090 $20.74 96
2018 Q4 6,728,446 $105,975,063 +$1,557,398 $15.75 70
2018 Q3 6,600,290 $98,663,025 +$7,792,437 $14.95 71
2018 Q2 6,119,701 $89,648,237 +$5,505,785 $14.65 65
2018 Q1 5,750,158 $67,267,666 +$4,162,936 $11.70 56
2017 Q4 5,443,565 $47,626,376 -$1,649,897 $8.75 61
2017 Q3 5,638,893 $54,702,271 -$431,681 $9.70 56
2017 Q2 5,686,998 $53,455,731 +$11,675,161 $9.40 56
2017 Q1 4,425,966 $45,144,000 +$8,405,109 $10.20 45
2016 Q4 4,031,853 $34,272,000 +$421,917 $8.50 39
2016 Q3 3,985,064 $28,670,000 +$3,493,614 $7.19 40
2016 Q2 3,497,424 $22,243,000 -$1,754 $6.36 29
2016 Q1 3,498,009 $21,865,000 +$521,717 $6.25 30
2015 Q4 3,415,974 $20,155,000 +$1,394,601 $5.90 31
2015 Q3 3,179,279 $19,234,000 +$867,203 $6.05 29
2015 Q2 3,035,869 $17,397,000 -$428,316 $5.73 26
2015 Q1 3,107,662 $17,897,000 +$412,261 $5.79 29
2014 Q4 3,038,277 $14,281,000 +$58,958 $4.70 30
2014 Q3 3,046,356 $14,317,754 -$3,752,893 $4.70 31
2014 Q2 3,825,594 $20,766,782 -$382,861 $5.43 33
2014 Q1 3,815,609 $25,269,841 -$831,709 $6.63 32