Napco Security TechnologiesNSSC
13F holders, Q3 2025 (September 30)240holders +19
49new positions
27sold out
10famous investors
$42.95avg. 13F price*
At the end of Q3 2025, 240 institutions reported holding Napco Security Technologies (NSSC) in their 13F filings, up 19 from Q2 2025. 49 opened new positions and 27 sold out. The largest holders were BlackRock, Inc. ($123.9M), Vanguard Group Inc. ($122.4M) and Fundsmith ($76.4M). 10 famous investors held it, including Terry Smith (0.4% of Fundsmith's portfolio), Mario Gabelli (0.1% of GAMCO Investors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Napco Security Technologies
- CUSIP
- 630402105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 49 | $65.8M |
| Exits | 27 | $25.2M |
All 13F filers, Q2 2025 → Q3 2025: 4,081,483 shares bought and 4,368,255 shares sold, net −286,772 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 240 holders
| BlackRock, Inc. | 0.00% | Reduce -3.8% | 2,883,885 | $123.9M |
| Vanguard Group Inc. | 0.00% | Reduce -0.3% | 2,850,419 | $122.4M |
| Fundsmith | 0.39% | Add +86.4% | 1,779,857 | $76.4M |
| Janus Henderson Group PLC | 0.03% | Add +3.8% | 1,524,270 | $65.5M |
| Copeland Capital Management, LLC | 1.34% | Reduce -5.6% | 1,497,512 | $64.3M |
| Doma Perpetual Capital Management LLC | 16.81% | Reduce -0.9% | 1,165,347 | $50.1M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.7% | 1,024,539 | $44.0M |
| Wellington Management Group LLP | 0.01% | Reduce -2.9% | 1,008,857 | $43.3M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Add +668.4% | 861,141 | $37.0M |
| State Street Corp. | 0.00% | Reduce -3.7% | 783,820 | $33.8M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -5.7% | 678,085 | $29.1M |
| Royal Bank of Canada | 0.00% | Reduce -19.6% | 646,264 | $27.8M |
| Northern Trust Corp. | 0.00% | Reduce -0.3% | 640,317 | $27.5M |
| First Trust Advisors LP | 0.02% | New | 565,894 | $24.3M |
| Emerald Advisers, LLC | 0.64% | Reduce -10.3% | 466,165 | $20.0M |
| Jacobs Levy Equity Management, Inc. | 0.07% | Add +1.9% | 438,327 | $18.8M |
| Envestnet Asset Management Inc. | 0.01% | Reduce -34.4% | 422,097 | $18.1M |
| Qube Research & Technologies Ltd | 0.03% | Reduce -9.1% | 420,808 | $18.1M |
| Morgan Stanley | 0.00% | Reduce -36.6% | 380,594 | $16.3M |
| Deutsche Bank AG | 0.01% | Add +1402.4% | 367,331 | $15.8M |
| Rockefeller Capital Management L.P. | 0.03% | Reduce -9.3% | 348,576 | $15.0M |
| AQR Capital Management | 0.01% | Add +7.7% | 331,506 | $14.2M |
| Renaissance Technologies | 0.02% | Add +5.5% | 315,100 | $13.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -8.4% | 306,491 | $13.2M |
| Granite Investment Partners, LLC | 0.73% | Reduce -14.3% | 297,704 | $12.8M |
| Visionary Wealth Advisors | 0.52% | Reduce -2.9% | 258,559 | $11.1M |
| JPMorgan Chase & Co. | 0.00% | Reduce -56.9% | 257,403 | $11.1M |
| Bank of America Corp. | 0.00% | Add +0.5% | 251,326 | $10.8M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -39.2% | 250,574 | $10.8M |
| Alta Capital Management LLC/ | 0.54% | Reduce -7.5% | 224,118 | $9.6M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | New | 220,000 | $9.4M |
| Wasatch Advisors LP | 0.05% | Reduce -1.8% | 217,111 | $9.3M |
| BNP Paribas Financial Markets | 0.01% | Add +25.3% | 206,512 | $8.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.6% | 199,536 | $8.6M |
| GAMCO Investors | 0.08% | No change | 198,000 | $8.5M |
| Voloridge Investment Management, LLC | 0.03% | Reduce -38.1% | 197,691 | $8.5M |
| Emerald Mutual Fund Advisers Trust | 0.42% | Reduce -16.8% | 189,495 | $8.1M |
| Trexquant Investment LP | 0.08% | Add +109.0% | 181,698 | $7.8M |
| Federated Hermes, Inc. | 0.01% | Reduce -2.3% | 177,422 | $7.6M |
| Canada Pension Plan Investment Board | 0.01% | Reduce -28.5% | 176,200 | $7.6M |
| Congress Asset Management Co. | 0.05% | Reduce -33.2% | 175,338 | $7.5M |
| Kornitzer Capital Management Inc. | 0.15% | No change | 173,580 | $7.5M |
| UBS Group AG | 0.00% | Add +40.1% | 168,995 | $7.3M |
| D. E. Shaw & Co. | 0.01% | Reduce -12.3% | 163,896 | $7.0M |
| Citadel Advisors | 0.01% | Add +44.4% | 162,795 | $7.0M |
| Rice Hall James & Associates, LLC | 0.37% | Reduce -16.1% | 156,368 | $6.7M |
| Russell Investments Group, Ltd. | 0.01% | Add +8.0% | 141,341 | $6.1M |
| Algert Global LLC | 0.10% | Reduce -33.0% | 135,235 | $5.8M |
| Danske Bank A/S | 0.01% | New | 131,145 | $5.6M |
| CenterBook Partners LP | 0.28% | Reduce -52.3% | 130,065 | $5.6M |
| Redmond Asset Management, LLC | 1.35% | Reduce -1.6% | 127,594 | $5.5M |
| Point72 Asset Management | 0.01% | Add +61.7% | 127,241 | $5.5M |
| PDT Partners, LLC | 0.34% | Reduce -18.9% | 124,614 | $5.4M |
| Millennium Management | 0.00% | Reduce -62.3% | 122,798 | $5.3M |
| Isthmus Partners, LLC | 0.62% | Add +4.5% | 122,345 | $5.3M |
| HighTower Advisors, LLC | 0.01% | Reduce -8.3% | 121,822 | $5.2M |
| Uniplan Investment Counsel, Inc. | 0.53% | Reduce -1.8% | 120,735 | $5.2M |
| Divisadero Street Capital Management, LP | 0.22% | No change | 111,566 | $4.8M |
| Crawford Investment Counsel Inc. | 0.07% | New | 103,750 | $4.5M |
| Stifel Financial Corp. | 0.00% | Reduce -3.0% | 103,098 | $4.4M |
| 4D Advisors, LLC | 2.29% | New | 100,000 | $4.3M |
| American Century Companies Inc. | 0.00% | Add +12.4% | 99,177 | $4.3M |
| FMR LLC | 0.00% | Reduce -77.3% | 97,914 | $4.2M |
| Marshall Wace, LLP | 0.00% | Reduce -43.7% | 93,698 | $4.0M |
| Man Group plc | 0.01% | Add +17.9% | 91,269 | $3.9M |
| Jump Financial, LLC | 0.05% | Reduce -6.6% | 90,400 | $3.9M |
| Tudor Investment Corporation | 0.03% | Reduce -54.8% | 89,212 | $3.8M |
| Sei Investments Co. | 0.00% | Add +7.9% | 88,956 | $3.8M |
| Allianz Asset Management GmbH | 0.00% | Add +0.2% | 88,513 | $3.8M |
| HRT Financial LP | 0.01% | Add +76.2% | 87,441 | $3.8M |
| First National Advisers, LLC | 0.49% | Add +1.7% | 83,812 | $3.6M |
| McMorgan & Co. LLC | 0.55% | Reduce -37.0% | 82,551 | $3.5M |
| First National Bank of Omaha | 0.22% | Reduce -4.6% | 82,549 | $3.5M |
| Voleon Capital Management LP | 0.09% | Reduce -23.2% | 81,948 | $3.5M |
| Verition Fund Management LLC | 0.02% | Reduce -30.0% | 81,838 | $3.5M |
| Hantz Financial Services, Inc. | 0.05% | Reduce -6.1% | 81,120 | $3.5M |
| Nuveen, LLC | 0.00% | Reduce -2.2% | 74,866 | $3.2M |
| New York State Common Retirement Fund | 0.00% | Reduce -2.7% | 72,915 | $3.1M |
| Swiss National Bank | 0.00% | No change | 69,500 | $3.0M |
| Bridge City Capital, LLC | 0.78% | Reduce -42.6% | 67,823 | $2.9M |
| Principal Financial Group Inc. | 0.00% | Add +100.0% | 66,781 | $2.9M |
| Engineers Gate Manager LP | 0.03% | Add +23.7% | 66,022 | $2.8M |
| Laurus Global Equity Management Inc. | 1.83% | No change | 62,360 | $2.7M |
| Deprince Race & Zollo Inc. | 0.05% | Reduce -7.8% | 57,731 | $2.5M |
| Barclays PLC | 0.00% | Reduce -20.6% | 55,078 | $2.4M |
| Rhumbline Advisers | 0.00% | Reduce -3.5% | 51,109 | $2.2M |
| Thrivent Financial for Lutherans | 0.00% | New | 50,999 | $2.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -45.0% | 49,554 | $2.1M |
| Ieq Capital, LLC | 0.01% | Add +27.9% | 47,849 | $2.1M |
| Legal & General Group Plc | 0.00% | Add +1.0% | 43,937 | $1.9M |
| Teachers Retirement System of the State of Kentucky | 0.01% | No change | 43,112 | $1.9M |
| SG Americas Securities, LLC | 0.01% | Add +882.6% | 43,036 | $1.8M |
| Linden Thomas Advisory Services, LLC | 0.19% | Add +4.1% | 42,636 | $1.8M |
| LPL Financial LLC | 0.00% | Add +8.8% | 42,448 | $1.8M |
| Invesco Ltd. | 0.00% | Add +10.9% | 42,311 | $1.8M |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 41,303 | $1.8M |
| Susquehanna International Group, LLP | 0.00% | Reduce -23.8% | 39,372 | $1.7M |
| Vest Financial, LLC | 0.02% | New | 37,537 | $1.6M |
| Alliancebernstein L.P. | 0.00% | Add +1.3% | 36,826 | $1.6M |
| Hennion & Walsh Asset Management, Inc. | 0.06% | Reduce -36.8% | 35,529 | $1.5M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 33,976 | $1.5M |
| Quantbot Technologies LP | 0.04% | New | 33,751 | $1.4M |
| Y-Intercept (Hong Kong) Ltd | 0.03% | Reduce -55.9% | 33,268 | $1.4M |
| GW&K Investment Management, LLC | 0.01% | Reduce -0.4% | 30,358 | $1.3M |
| Heritage Investors Management Corp. | 0.04% | No change | 29,097 | $1.3M |
| Pathstone Holdings, LLC | 0.00% | Reduce -12.3% | 28,070 | $1.2M |
| Creative Planning | 0.00% | Add +31.9% | 27,654 | $1.2M |
| Corient Private Wealth LP | 0.00% | New | 25,255 | $1.1M |
| Raffles Associates LP | 0.98% | No change | 24,424 | $1.0M |
| T. Rowe Price Associates Inc. | 0.00% | Add +5.0% | 24,306 | $1.0M |
| Wells Fargo & Company | 0.00% | Add +9.1% | 24,216 | $1.0M |
| Fox Run Management, L.L.C. | 0.16% | New | 23,581 | $1.0M |
| Franklin Resources Inc. | 0.00% | Add +13.6% | 22,903 | $984K |
| AlphaQuest LLC | 0.06% | Add +16.3% | 22,298 | $958K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +0.5% | 21,669 | $931K |
| Brevan Howard Capital Management LP | 0.01% | Reduce -23.2% | 21,003 | $902K |
| Cetera Investment Advisers | 0.00% | New | 20,963 | $900K |
| Gotham Asset Management | 0.00% | Reduce -25.4% | 20,544 | $882K |
| MetLife Investment Management, LLC | 0.00% | Reduce -3.0% | 20,478 | $880K |
| Gabelli Funds LLC | 0.01% | No change | 20,000 | $859K |
| Acadian Asset Management LLC | 0.00% | New | 20,034 | $857K |
| Cerity Partners LLC | 0.00% | Add +29.4% | 19,815 | $851K |
| Cwm, LLC | 0.00% | Add +13.0% | 19,365 | $832K |
| Truist Financial Corp. | 0.00% | Add +0.4% | 18,901 | $812K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -4.5% | 17,178 | $738K |
| Los Angeles Capital Management LLC | 0.00% | New | 17,150 | $737K |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +20.9% | 16,842 | $715K |
| Quantinno Capital Management LP | 0.00% | Add +16.6% | 16,186 | $695K |
| ExodusPoint Capital Management, LP | 0.01% | New | 16,062 | $690K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -16.9% | 16,047 | $689K |
| Sentinel Pension Advisors, LLC | 0.11% | Reduce -27.3% | 16,046 | $689K |
| Arax Advisory Partners | 0.01% | Add +979.4% | 15,975 | $686K |
| AdvisorShares Investments LLC | 0.11% | Reduce -1.3% | 15,961 | $686K |
| Legato Capital Management LLC | 0.07% | Reduce -42.6% | 15,764 | $677K |
| Neuberger Berman Group LLC | 0.00% | Reduce -6.8% | 15,720 | $675K |
| Intech Investment Management LLC | 0.01% | Reduce -9.0% | 15,600 | $670K |
| Snowden Capital Advisors LLC | 0.02% | Add +0.1% | 15,522 | $669K |
| Cynosure Group, LLC | 0.07% | No change | 14,719 | $632K |
| Bessemer Group Inc. | 0.00% | Reduce -0.7% | 14,675 | $630K |
| Teacher Retirement System of Texas | 0.00% | Reduce -10.8% | 13,972 | $600K |
| Lazard Asset Management LLC | 0.00% | No change | 13,425 | $577K |
| Cim, LLC | 0.07% | No change | 13,164 | $565K |
| Numerai GP LLC | 0.08% | Reduce -71.5% | 13,071 | $561K |
| Polen Capital Management LLC | 0.00% | New | 12,567 | $540K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +5.9% | 12,113 | $522K |
| Two Sigma Advisers, LP | 0.00% | Reduce -48.7% | 12,000 | $515K |
| Aviva PLC | 0.00% | Reduce -28.9% | 11,825 | $508K |
| Alps Advisors Inc. | 0.00% | New | 10,870 | $467K |
| Tributary Capital Management, LLC | 0.04% | No change | 10,748 | $462K |
| Arizona State Retirement System | 0.00% | Reduce -0.7% | 10,536 | $453K |
| Yorktown Management & Research Co Inc | 0.34% | New | 9,900 | $425K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +26.2% | 9,741 | $418K |
| Earnest Partners LLC | 0.00% | No change | 9,600 | $412K |
| STRS Ohio | 0.00% | New | 9,500 | $408K |
| SkyOak Wealth, LLC | 0.08% | New | 9,387 | $403K |
| Boothbay Fund Management, LLC | 0.01% | New | 9,328 | $401K |
| KLP Kapitalforvaltning As | 0.00% | Add +38.8% | 9,300 | $401K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 9,090 | $390K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.00% | Add +25.5% | 8,848 | $380K |
| Comerica Bank | 0.00% | Reduce -3.0% | 8,199 | $352K |
| Personal Cfo Solutions, LLC | 0.06% | Add +3.2% | 8,031 | $345K |
| XTX Topco Ltd | 0.02% | Reduce -86.2% | 7,287 | $313K |
| Axq Capital, LP | 0.11% | New | 6,880 | $295K |
| Voya Investment Management LLC | 0.00% | Reduce -33.8% | 6,359 | $273K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 6,222 | $267K |
| Mercer Global Advisors Inc. | 0.00% | New | 6,166 | $265K |
| Jain Global LLC | 0.00% | New | 6,160 | $265K |
| Atom Investors LP | 0.02% | New | 6,115 | $263K |
| Barrett & Company, Inc. | 0.09% | Add +0.1% | 6,013 | $258K |
| ProShare Advisors LLC | 0.00% | Reduce -18.3% | 5,906 | $254K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | New | 5,799 | $249K |
| Inceptionr LLC | 0.06% | New | 5,621 | $241K |
| Gsa Capital Partners LLP | 0.02% | Reduce -77.0% | 5,533 | $238K |
| Citigroup Inc. | 0.00% | Reduce -64.9% | 5,521 | $237K |
| Kestra Advisory Services, LLC | 0.00% | Reduce -26.8% | 5,464 | $235K |
| MML Investors Services, LLC | 0.00% | New | 5,166 | $222K |
| Tower Research Capital LLC (TRC) | 0.01% | Reduce -0.3% | 5,012 | $215K |
| Pictet Asset Management Holding SA | 0.00% | New | 4,923 | $211K |
| Simplex Trading, LLC | 0.00% | New | 4,710 | $202K |
| Prudential Financial Inc. | 0.00% | New | 4,699 | $202K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 4,553 | $192K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 3,551 | $153K |
| Ameritas Investment Partners, Inc. | 0.00% | Reduce -16.1% | 2,885 | $124K |
| Osaic Holdings, Inc. | 0.00% | Add +113.0% | 2,009 | $78K |
| State of Alaska, Department of Revenue | 0.00% | New | 1,582 | $67K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -14.1% | 1,541 | $66K |
| Essential Partners LLC | 0.02% | Add +15.0% | 1,356 | $58K |
| Amalgamated Bank | 0.00% | No change | 1,180 | $51K |
| Versant Capital Management, Inc | 0.01% | No change | 1,145 | $49K |
| CBIZ Investment Advisory Services, LLC | 0.00% | Reduce -0.1% | 1,042 | $45K |
| Advisory Services Network, LLC | 0.00% | New | 959 | $41K |
| State of Wyoming | 0.00% | New | 958 | $41K |
| Binnacle Investments Inc | 0.02% | Add +28.9% | 938 | $40K |
| MPWM Advisory Solutions, LLC | 0.02% | Reduce -35.1% | 805 | $35K |
| GAMMA Investing LLC | 0.00% | Add +6.8% | 786 | $34K |
| Truvestments Capital LLC | 0.01% | Reduce -53.6% | 752 | $32K |
| Parkside Financial Bank & Trust | 0.00% | No change | 747 | $32K |
| US Bancorp \de | 0.00% | Reduce -84.7% | 738 | $32K |
| Federation des caisses Desjardins du Quebec | 0.00% | Add +76.2% | 687 | $30K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +1.1% | 625 | $27K |
| Exchange Traded Concepts, LLC | 0.00% | New | 617 | $27K |
| Quadrant Capital Group LLC | 0.00% | New | 607 | $26K |
| Signaturefd, LLC | 0.00% | Add +3.3% | 602 | $26K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 597 | $26K |
| Cornerstone Planning Group LLC | 0.00% | New | 571 | $25K |
| IFP Advisors, Inc | 0.00% | Add +193.3% | 572 | $25K |
| Smartleaf Asset Management LLC | 0.00% | New | 513 | $22K |
| First Horizon Corp. | 0.00% | — | 432 | $19K |
| Physician Wealth Advisors, Inc. | 0.00% | No change | 425 | $18K |
| Financial Network Wealth Advisors LLC | 0.02% | No change | 420 | $18K |
| Group One Trading LLC | 0.00% | New | 419 | $18K |
| Toth Financial Advisory Corp. | 0.00% | Reduce -20.0% | 400 | $17K |
| Financial Management Professionals, Inc. | 0.00% | New | 387 | $17K |
| Allworth Financial LP | 0.00% | Add +51.4% | 333 | $14K |
| Principal Securities, Inc. | 0.00% | Reduce -11.0% | 332 | $14K |
| Brown Brothers Harriman & Co. | 0.00% | New | 195 | $8K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | No change | 188 | $8K |
| Point72 Hong Kong Ltd | 0.00% | New | 184 | $8K |
| WPG Advisers, LLC | 0.01% | No change | 179 | $8K |
| Optiver Holding B.V. | 0.00% | New | 168 | $7K |
| Parallel Advisors, LLC | 0.00% | No change | 106 | $5K |
| True Wealth Design, LLC | 0.00% | Add +17.1% | 103 | $4K |
| Wolff Wiese Magana LLC | 0.00% | No change | 100 | $4K |
| Jones Financial Companies LLLP | 0.00% | No change | 88 | $4K |
| Rothschild Investment LLC | 0.00% | Reduce -19.1% | 85 | $4K |
| Sterling Capital Management LLC | 0.00% | Add +2.4% | 84 | $4K |
| SBI Securities Co., Ltd. | 0.00% | Add +7.7% | 84 | $4K |
| Root Financial Partners, LLC | 0.00% | New | 70 | $3K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 52 | $2K |
| Assetmark, Inc. | 0.00% | New | 42 | $2K |
| Westfuller Advisors, LLC | 0.00% | New | 40 | $2K |
| Sunbelt Securities, Inc. | 0.00% | New | 26 | $1K |
| Covestor Ltd | 0.00% | Reduce -34.6% | 17 | $1K |
| Clearstead Advisors, LLC | 0.00% | Add +200.0% | 15 | $645 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 9 | $387 |
| Rosenberg Matthew Hamilton | 0.00% | No change | 7 | $301 |
| Larson Financial Group LLC | 0.00% | New | 4 | $172 |
| Creekmur Asset Management LLC | 0.00% | No change | 1 | $44 |
| Huntington National Bank | 0.00% | No change | 1 | $43 |
| Hemington Wealth Management | 0.00% | No change | 7 | $0 |
"% of holder's portfolio" is NSSC's weight in each manager's 13F, not the share of Napco Security Technologies the manager owns.