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Disclosery

NSSC NAPCO SEC TECHNOLOGIES INC

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Stock (common), issuer CIK 69633

216 managers (222 13F filers) reported a position in NSSC shares at 2025-06-30, 32,334,919 shares in all. 31 filers opened a position and 40 filers sold out during the quarter.

Managers
216
13F filers
222
New
31
Added
93
Reduced
70
Sold out
40
Shares held by filers
32,334,919

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.2,998,601$89M<0.01%-42,82913F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,859,435$84.9M<0.01%-42,23613F-HRTimelineGroup
Copeland Capital Management, LLC1,585,684$47.1M0.97%+91,75613F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson1,468,686$43.6M0.02%+501,25413F-HRTimelineGroup
Doma Perpetual Capital Management LLC1,175,655$34.9M13.22%013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,039,222$30.9M0.01%+389,90413F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,031,547$30.6M<0.01%+14,50113F-HRTimelineGroup
Fundsmith LLP954,912$28.4M0.12%new13F-HRTimeline
STATE STREET CORPin group STATE STREET CORP813,664$24.3M<0.01%-77713F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA803,965$23.9M<0.01%+76,59713F-HR/ATimelineGroup
EMERALD ADVISERS, LLCgroup of 2 filers holding747,612$22.2M+117,953Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP719,345$21.4M<0.01%-131,50013F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC643,348$19.1M0.01%-69,32613F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP642,415$19.1M<0.01%-30,84613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY600,514$17.8M<0.01%+20,19413F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO597,552$17.7M<0.01%+46,66813F-HRTimelineGroup
Qube Research & Technologies Ltd462,750$13.7M0.02%+112,89513F-HRTimeline
FMR LLCin group FMR LLC431,246$12.8M<0.01%-662,79913F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC430,323$12.8M0.05%+221,85413F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC412,285$12.2M<0.01%-177,00513F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…384,549$11.4M0.03%+15,77013F-HR/ATimelineGroup
Granite Investment Partners, LLC347,170$10.3M0.5%-27,01113F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co334,669$9.94M<0.01%-11,89213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC325,414$9.66M0.01%-444,37513F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC319,465$9.48M0.03%-163,35513F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC307,879$9.14M0.01%+21,82313F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC298,800$8.87M0.01%+45,70013F-HRTimeline
CenterBook Partners LP272,892$8.1M0.45%-83,26313F-HRTimeline
Visionary Wealth Advisors266,259$7.91M0.4%-11013F-HRTimeline
CONGRESS ASSET MANAGEMENT CO262,494$7.79M0.05%-16,30213F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/250,164$7.43M<0.01%-33,72513F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD246,400$7.32M0.01%+187,60013F-HRTimeline
ALTA CAPITAL MANAGEMENT LLC/242,414$7.2M0.41%-165,57713F-HRTimeline
WASATCH ADVISORS LP220,998$6.56M0.03%new13F-HRTimeline
GAMCO Investors (Gabelli)group of 2 filers holding218,000$6.47M-5,000Timeline
UBS Group AGgroup of 2 filers holding210,603$6.25M+37,816Timeline
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…207,112$6.15M0.05%-2,58713F-HRTimelineGroup
ALGERT GLOBAL LLC202,002$6M0.13%+18,35313F-HR/ATimeline
NORGES BANK200,835$5.96M<0.01%+177,90013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp200,646$5.96M<0.01%+1,01513F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL197,433$5.86M0.04%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.186,816$5.55M0.01%new13F-HRTimelineGroup
RICE HALL JAMES & ASSOCIATES, LLC186,357$5.53M0.3%-8,47213F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.181,646$5.39M0.01%-3,85713F-HRTimelineGroup
KORNITZER CAPITAL MANAGEMENT INC /KS173,580$5.15M0.1%-101,39013F-HRTimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding168,978$5.02M+872Timeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP166,509$4.94M0.01%+132,07513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS164,800$4.89M<0.01%+19,46713F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…162,800$4.83M0.01%-33,50013F-HRTimeline
SG Capital Management LLC154,726$4.59M0.39%new13F-HRTimeline
PDT Partners, LLC153,596$4.56M0.26%+22,47413F-HRTimeline
HighTower Advisors, LLC132,920$3.95M<0.01%-1,02513F-HRTimeline
MCMORGAN & CO LLC131,073$3.89M0.57%+38,11413F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…130,828$3.88M<0.01%+20,76213F-HRTimelineGroup
Redmond Asset Management, LLC129,625$3.85M0.92%-1,91513F-HRTimeline
Uniplan Investment Counsel, Inc.122,959$3.65M0.37%-8,02513F-HRTimeline
Bridge City Capital, LLC118,215$3.51M0.98%-1,67813F-HRTimeline
ISTHMUS PARTNERS, LLC117,032$3.47M0.41%+14,65213F-HRTimeline
Verition Fund Management LLC116,958$3.47M0.02%+53,10613F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC112,738$3.35M<0.01%+60,78213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …112,076$3.33M<0.01%new13F-HRTimelineGroup
Divisadero Street Capital Management, LPin group Divisadero Street Capital Man…111,566$3.31M0.22%013F-HRTimelineGroup
Voleon Capital Management LP106,742$3.17M0.17%+10,89413F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP106,315$3.16M<0.01%+15,45513F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC96,775$2.87M0.04%+42,59013F-HR/ATimelineGroup
Allianz Asset Management GmbHin group Allianz SE88,308$2.62M<0.01%-13,20013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC88,226$2.62M<0.01%+3,99513F-HRTimelineGroup
Trexquant Investment LP86,949$2.58M0.03%+21,81513F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.86,354$2.56M0.04%-44,50413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
SEI INVESTMENTS COin group SEI INVESTMENTS CO82,462$2.45M<0.01%+27,31313F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.78,694$2.34M0.01%-224,90713F-HRTimelineGroup
Man Group plcin group Man Group plc77,447$2.3M<0.01%+1,83213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC76,681$2.28M<0.01%-21,54013F-HRTimelineGroup
Nuveen, LLCin group TIAA76,534$2.27M<0.01%-15,87413F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd75,432$2.24M0.05%+32,07713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND74,963$2.23M<0.01%013F-HR/ATimeline
Swiss National Bank69,500$2.06M<0.01%-1,60013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC69,380$2.06M<0.01%+21,83313F-HR/ATimelineGroup
DEPRINCE RACE & ZOLLO INC62,639$1.86M0.04%-5,23813F-HRTimeline
Taylor Frigon Capital Management LLC62,461$1.85M0.99%-4,02213F-HRTimeline
Laurus Global Equity Management Inc.62,360$1.85M1.21%-17,20013F-HRTimeline
Hennion & Walsh Asset Management, Inc.56,218$1.67M0.07%+1,73613F-HRTimeline
Engineers Gate Manager LP53,355$1.58M0.02%+23,99813F-HRTimeline
RHUMBLINE ADVISERS52,941$1.57M<0.01%+2,49513F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd52,897$1.57M0.07%+33,35813F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…51,698$1.53M<0.01%-6,91313F-HRTimelineGroup
HRT FINANCIAL LP49,625$1.47M0.01%+16,47813F-HRTimeline
Numerai GP LLC45,851$1.36M0.2%+24,98813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc43,507$1.29M<0.01%+2,31013F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…43,112$1.28M0.01%+6,09313F-HRTimeline
Linden Thomas Advisory Services, LLC40,971$1.22M0.13%+13,79013F-HRTimeline
LPL Financial LLC39,009$1.16M<0.01%-3,76413F-HRTimeline
Invesco Ltd.in group Invesco Ltd.38,159$1.13M<0.01%-2,85713F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding37,431$1.11MnewTimeline
IEQ CAPITAL, LLC37,417$1.11M0.01%+13,02113F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management37,233$1.11M<0.01%+24,67413F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.36,352$1.08M<0.01%-67413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…33,974$1.01M<0.01%-37613F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding33,760$1M+12,110Timeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC32,004$950K<0.01%+14,95413F-HRTimelineGroup
GW&K Investment Management, LLC30,488$905K0.01%-412,57113F-HRTimeline
HERITAGE INVESTORS MANAGEMENT CORP29,097$864K0.03%013F-HRTimeline
Gotham Asset Management, LLC27,537$818K<0.01%+4,11113F-HRTimeline
Legato Capital Management LLC27,474$816K0.1%013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…27,334$812K0.01%new13F-HRTimelineGroup
Nebula Research & Development LLC26,746$794K0.07%-2,70613F-HRTimeline
CAXTON ASSOCIATES LLP24,575$730K0.02%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\24,449$726K<0.01%-149,49313F-HRTimelineGroup
RAFFLES ASSOCIATES LP24,424$725K0.76%-3,00013F-HRTimeline
GSA CAPITAL PARTNERS LLP24,103$716K0.05%-11,86213F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/23,152$688K<0.01%+2,28813F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN22,187$659K<0.01%-32,31113F-HRTimelineGroup
SENTINEL PENSION ADVISORS, LLC22,084$656K0.11%new13F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC22,065$655K<0.01%+8,17413F-HRTimelineGroup
Cambridge Investment Research Advisors,…21,561$640K<0.01%+14013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…21,106$627K<0.01%013F-HRTimelineGroup
Creative Planningin group Creative Planning20,963$622K<0.01%+4,53513F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources20,170$599K<0.01%+12513F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…19,321$574K<0.01%-1,57813F-HRTimelineGroup
AlphaQuest LLC19,178$569K0.06%+13,87613F-HRTimeline
NFSG Corp19,012$564K0.09%+18,50313F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP18,820$559K<0.01%-5,45113F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …17,996$534K<0.01%-28613F-HRTimelineGroup
EntryPoint Capital, LLC17,540$521K0.26%+2,97913F-HRTimeline
CWM, LLCin group CWM, LLC17,135$509K<0.01%+6,43613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC17,142$509K<0.01%-8,26113F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC16,866$501K<0.01%+2,56913F-HR/ATimelineGroup
AVIVA PLCin group AVIVA PLC16,638$494K<0.01%-8,15013F-HRTimelineGroup
AdvisorShares Investments LLC16,163$480K0.09%-3,03713F-HRTimeline
CITIGROUP INCin group CITIGROUP INC15,718$467K<0.01%-12,84213F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS15,670$465K<0.01%-3,78513F-HRTimeline
Snowden Capital Advisors LLC15,515$463K0.01%+1,31913F-HRTimeline
AVANTAX ADVISORY SERVICES, INC.15,474$459K<0.01%+3,90213F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC15,319$455K<0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD15,081$448K<0.01%new13F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC14,772$439K<0.01%+1,76313F-HRTimelineGroup
Cynosure Group, LLC14,719$437K0.05%-56,86813F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co13,925$414K<0.01%013F-HRTimelineGroup
Quantinno Capital Management LP13,883$412K<0.01%+3,73713F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC13,425$398K<0.01%+96113F-HRTimelineGroup
CIM, LLC13,164$391K0.05%+2,15213F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…11,443$345K<0.01%new13F-HRTimeline
Tributary Capital Management, LLC10,748$319K0.03%013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM10,611$315K<0.01%+12213F-HRTimeline
Corient IA LPin group Corient Private Wealth LP10,000$297K0.17%013F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC9,604$285K<0.01%+10613F-HRTimelineGroup
EARNEST PARTNERS LLC9,600$285K<0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…9,090$270K<0.01%013F-HRTimeline
COMERICA BANK8,455$251K<0.01%+1,91013F-HRTimeline
Janney Montgomery Scott LLC7,933$236K<0.01%new13F-HRTimeline
PERSONAL CFO SOLUTIONS, LLC7,785$231K0.04%new13F-HRTimeline
Police & Firemen's Retirement System of…7,721$229K<0.01%013F-HRTimeline
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC7,464$222K<0.01%new13F-HRTimelineGroup
ProShare Advisors LLC7,230$215K<0.01%new13F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al7,048$209K<0.01%new13F-HRTimeline
Graham Capital Management, L.P.7,037$209K0.01%-5,41613F-HRTimeline
KLP KAPITALFORVALTNING AS6,700$200K<0.01%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…6,222$185K<0.01%013F-HRTimeline
BARRETT & COMPANY, INC.6,007$178K0.07%+813F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,027$149K<0.01%+3,74813F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\4,826$143K<0.01%+2,46913F-HRTimelineGroup
DekaBank Deutsche Girozentrale4,553$134K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC4,394$130K<0.01%new13F-HRTimelineGroup
SG Americas Securities, LLC4,380$130K<0.01%-111,33413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…3,551$105K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,439$102K<0.01%013F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding2,386$70.8K-74,914Timeline
Brooklyn Investment Group2,040$60.6K0.01%+1,87413F-HR/ATimeline
Farther Finance Advisors, LLC1,793$53.2K<0.01%-2,03913F-HRTimeline
Truvestments Capital LLC1,620$48.1K0.01%-17513F-HRTimeline
First Horizon Advisors, Inc.1,552$46.1K<0.01%+51613F-HRTimeline
Arax Advisory Partners1,480$43.9K<0.01%+11613F-HRTimeline
MPWM ADVISORY SOLUTIONS, LLC1,240$36.8K0.02%+5313F-HRTimeline
Essential Partners LLC1,179$35K0.01%13F-HRTimeline
AMALGAMATED BANK1,180$35K<0.01%013F-HRTimeline
Versant Capital Management, Inc1,145$34K0.01%+41013F-HRTimeline
Quaker Wealth Management, LLC1,050$31.2K0.01%new13F-HRTimeline
CBIZ Investment Advisory Services, LLC1,043$31.1K<0.01%+13613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.943$28K<0.01%-2,72013F-HR/ATimelineGroup
Parkside Financial Bank & Trust747$22.2K<0.01%new13F-HRTimeline
GAMMA Investing LLC736$21.9K<0.01%-37013F-HRTimeline
Binnacle Investments Inc728$21.6K0.01%+30413F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…618$18.3K<0.01%+44613F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC597$17.8K<0.01%+42013F-HRTimeline
MASECO LLP585$17.4K<0.01%13F-HRTimeline
SIGNATUREFD, LLC583$17.3K<0.01%+35713F-HRTimeline
Retirement Wealth Solutions LLC517$15.3K0.01%+6013F-HRTimeline
TOTH FINANCIAL ADVISORY CORP500$14.8K<0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.425$12.6K<0.01%-61513F-HRTimeline
Financial Network Wealth Advisors LLC420$12.5K0.02%-13113F-HRTimeline
Federation des caisses Desjardins du Qu…390$11.6K<0.01%+13013F-HRTimeline
Geneos Wealth Management Inc.251$7.45K<0.01%+5813F-HRTimeline
Allworth Financial LP220$6.54K<0.01%+11013F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …188$6K<0.01%new13F-HRTimelineGroup
IFP Advisors, Inc195$5.79K<0.01%new13F-HRTimeline
WPG Advisers, LLC179$5.32K<0.01%+2013F-HRTimeline
Whipplewood Advisors, LLC108$3.21K<0.01%new13F-HRTimeline
Parallel Advisors, LLC106$3.15K<0.01%+7613F-HRTimeline
ROTHSCHILD INVESTMENT LLC105$3.12K<0.01%+7013F-HRTimeline
WOLFF WIESE MAGANA LLC100$2.97K<0.01%-10013F-HRTimeline