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Disclosery

NSSC NAPCO SEC TECHNOLOGIES INC

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Stock (common), issuer CIK 69633

235 managers (240 13F filers) reported a position in NSSC shares at 2025-09-30, 31,803,972 shares in all. 49 filers opened a position and 29 filers sold out during the quarter.

Managers
235
13F filers
240
New
49
Added
63
Reduced
93
Sold out
29
Shares held by filers
31,803,972

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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.2,883,885$124M<0.01%-114,71613F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,850,419$122M<0.01%-9,01613F-HRTimelineGroup
Fundsmith LLP1,779,857$76.4M0.39%+824,94513F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson1,524,270$65.5M0.03%+55,58413F-HRTimelineGroup
Copeland Capital Management, LLC1,497,512$64.3M1.34%-88,17213F-HRTimeline
Doma Perpetual Capital Management LLC1,165,347$50.1M16.81%-10,30813F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,024,539$44M<0.01%-7,00813F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,008,857$43.3M0.01%-30,36513F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …861,141$37M0.02%+749,06513F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP783,820$33.8M<0.01%-29,84413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP678,085$29.1M0.01%-41,26013F-HRTimelineGroup
EMERALD ADVISERS, LLCgroup of 2 filers holding655,660$28.2M-91,952Timeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA646,264$27.8M<0.01%-157,70113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP640,317$27.5M<0.01%-2,09813F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP565,894$24.3M0.02%new13F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC438,327$18.8M0.07%+8,00413F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC422,097$18.1M0.01%-221,25113F-HRTimelineGroup
Qube Research & Technologies Ltd420,808$18.1M0.03%-41,94213F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY380,594$16.3M<0.01%-219,92013F-HR/ATimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\367,331$15.8M0.01%+342,88213F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…348,576$15M0.03%-35,97313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC331,506$14.2M0.01%+23,62713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC315,100$13.5M0.02%+16,30013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co306,491$13.2M<0.01%-28,17813F-HRTimelineGroup
Granite Investment Partners, LLC297,704$12.8M0.73%-49,46613F-HRTimeline
Visionary Wealth Advisors258,559$11.1M0.52%-7,70013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO257,403$11.1M<0.01%-340,14913F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/251,326$10.8M<0.01%+1,16213F-HR/ATimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC250,574$10.8M<0.01%-161,71113F-HRTimelineGroup
ALTA CAPITAL MANAGEMENT LLC/224,118$9.63M0.54%-18,29613F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…220,000$9.45M0.01%new13F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding218,549$9.39M+7,946Timeline
GAMCO Investors (Gabelli)group of 2 filers holding218,000$9.36M0Timeline
WASATCH ADVISORS LP217,111$9.32M0.05%-3,88713F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS206,512$8.87M0.01%+41,71213F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp199,536$8.57M<0.01%-1,11013F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC197,691$8.49M0.03%-121,77413F-HRTimeline
Trexquant Investment LP181,698$7.8M0.08%+94,74913F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.177,422$7.62M0.01%-4,22413F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD176,200$7.57M0.01%-70,20013F-HRTimeline
CONGRESS ASSET MANAGEMENT CO175,338$7.53M0.05%-87,15613F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS173,580$7.46M0.15%013F-HRTimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding166,361$7.15M-2,617Timeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.163,896$7.04M0.01%-22,92013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC162,795$6.99M0.01%+50,05713F-HRTimelineGroup
RICE HALL JAMES & ASSOCIATES, LLC156,368$6.72M0.37%-29,98913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…141,341$6.07M0.01%+10,51313F-HRTimelineGroup
ALGERT GLOBAL LLC135,235$5.81M0.1%-66,76713F-HR/ATimeline
DANSKE BANK A/S131,145$5.63M0.01%new13F-HR/ATimeline
CenterBook Partners LP130,065$5.59M0.28%-142,82713F-HRTimeline
Redmond Asset Management, LLC127,594$5.48M1.35%-2,03113F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.127,241$5.47M0.01%+48,54713F-HRTimelineGroup
PDT Partners, LLC124,614$5.35M0.34%-28,98213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC122,798$5.27M<0.01%-202,61613F-HRTimelineGroup
ISTHMUS PARTNERS, LLC122,345$5.25M1.17%+5,31313F-HRTimeline
HighTower Advisors, LLC121,822$5.23M0.01%-11,09813F-HRTimeline
Uniplan Investment Counsel, Inc.120,735$5.19M0.51%-2,22413F-HRTimeline
Divisadero Street Capital Management, LPin group Divisadero Street Capital Man…111,566$4.79M0.22%013F-HRTimelineGroup
CRAWFORD INVESTMENT COUNSEL INC103,750$4.46M0.07%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP103,098$4.43M<0.01%-3,21713F-HRTimelineGroup
4D Advisors, LLC100,000$4.29M2.29%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC99,177$4.26M<0.01%+10,95113F-HRTimelineGroup
FMR LLCin group FMR LLC97,914$4.21M<0.01%-333,33213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP93,698$4.02M<0.01%-72,81113F-HRTimelineGroup
Man Group plcin group Man Group plc91,269$3.92M0.01%+13,82213F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC90,400$3.88M0.05%-6,37513F-HR/ATimelineGroup
TUDOR INVESTMENT CORP ET AL89,212$3.83M0.02%-108,22113F-HR/ATimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO88,956$3.82M<0.01%+6,49413F-HRTimelineGroup
Allianz Asset Management GmbHin group Allianz SE88,513$3.8M<0.01%+20513F-HRTimelineGroup
HRT FINANCIAL LP87,441$3.75M0.01%+37,81613F-HRTimeline
MCMORGAN & CO LLC82,551$3.55M0.55%-48,52213F-HRTimeline
Voleon Capital Management LP81,948$3.52M0.09%-24,79413F-HRTimeline
Verition Fund Management LLC81,838$3.51M0.02%-35,12013F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.81,120$3.48M0.05%-5,23413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Nuveen, LLCin group TIAA74,866$3.22M<0.01%-1,66813F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND72,915$3.13M<0.01%-2,04813F-HRTimeline
Swiss National Bank69,500$2.99M<0.01%013F-HRTimeline
Bridge City Capital, LLC67,823$2.91M0.78%-50,39213F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding67,113$2.88M+33,353Timeline
Engineers Gate Manager LP66,022$2.84M0.03%+12,66713F-HRTimeline
Laurus Global Equity Management Inc.62,360$2.68M1.83%013F-HRTimeline
DEPRINCE RACE & ZOLLO INC57,731$2.48M0.05%-4,90813F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC55,078$2.37M<0.01%-14,30213F-HR/ATimelineGroup
RHUMBLINE ADVISERS51,109$2.2M<0.01%-1,83213F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…50,999$2.19M<0.01%new13F-HRTimelineGroup
IEQ CAPITAL, LLC47,849$2.06M0.01%+10,43213F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc43,937$1.89M<0.01%+43013F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…43,112$1.85M0.01%013F-HRTimeline
SG Americas Securities, LLC43,036$1.85M0.01%+38,65613F-HRTimeline
Linden Thomas Advisory Services, LLC42,636$1.83M0.19%+1,66513F-HRTimeline
LPL Financial LLC42,448$1.82M<0.01%+3,43913F-HRTimeline
Invesco Ltd.in group Invesco Ltd.42,311$1.82M<0.01%+4,15213F-HRTimelineGroup
Schonfeld Strategic Advisors LLC41,303$1.77M0.01%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…39,372$1.69M<0.01%-12,32613F-HRTimelineGroup
Vest Financial, LLC37,537$1.61M0.02%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.36,826$1.58M<0.01%+47413F-HRTimeline
Hennion & Walsh Asset Management, Inc.35,529$1.53M0.06%-20,68913F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…33,976$1.46M<0.01%+213F-HRTimeline
Quantbot Technologies LP33,751$1.45M0.04%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd33,268$1.43M0.03%-42,16413F-HRTimeline
GW&K Investment Management, LLC30,358$1.3M0.01%-13013F-HRTimeline
HERITAGE INVESTORS MANAGEMENT CORP29,097$1.25M0.04%013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC28,070$1.21M<0.01%-3,93413F-HRTimelineGroup
Creative Planningin group Creative Planning27,654$1.19M<0.01%+6,69113F-HRTimelineGroup
Corient Private Wealth LPgroup of 2 filers holding25,255$1.08M+15,255Timeline
RAFFLES ASSOCIATES LP24,424$1.05M0.98%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/24,306$1.04M<0.01%+1,15413F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN24,216$1.04M<0.01%+2,02913F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.23,581$1.01M0.16%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources22,903$984K<0.01%+2,73313F-HRTimelineGroup
AlphaQuest LLC22,298$958K0.06%+3,12013F-HRTimeline
Cambridge Investment Research Advisors,…21,669$931K<0.01%+10813F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…21,003$902K0.01%-6,33113F-HRTimelineGroup
Cetera Investment Advisers20,963$900K<0.01%new13F-HRTimeline
Gotham Asset Management, LLC20,544$882K<0.01%-6,99313F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…20,478$880K<0.01%-62813F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC20,034$857K<0.01%new13F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC19,815$851K<0.01%+4,49613F-HRTimelineGroup
CWM, LLCin group CWM, LLC19,365$832K<0.01%+2,23013F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP18,901$812K<0.01%+8113F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …17,178$738K<0.01%-81813F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC17,150$737K<0.01%new13F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co16,842$715K<0.01%+2,91713F-HRTimelineGroup
Quantinno Capital Management LP16,186$695K<0.01%+2,30313F-HRTimeline
ExodusPoint Capital Management, LP16,062$690K0.01%new13F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…16,047$689K<0.01%-3,27413F-HRTimelineGroup
SENTINEL PENSION ADVISORS, LLC16,046$689K0.11%-6,03813F-HRTimeline
Arax Advisory Partners15,975$686K0.01%+14,49513F-HRTimeline
AdvisorShares Investments LLC15,961$686K0.11%-20213F-HRTimeline
Legato Capital Management LLC15,764$677K0.07%-11,71013F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC15,720$675K<0.01%-1,14613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC15,600$670K0.01%-1,54213F-HRTimeline
Snowden Capital Advisors LLC15,522$669K0.02%+713F-HRTimeline
Cynosure Group, LLC14,719$632K0.07%013F-HR/ATimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC14,675$630K<0.01%-9713F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS13,972$600K<0.01%-1,69813F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC13,425$577K<0.01%013F-HRTimelineGroup
CIM, LLC13,164$565K0.07%013F-HRTimeline
Numerai GP LLC13,071$561K0.08%-32,78013F-HRTimeline
POLEN CAPITAL MANAGEMENT LLC12,567$540K<0.01%new13F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…12,113$522K<0.01%+67013F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding12,000$515K-25,431Timeline
AVIVA PLCin group AVIVA PLC11,825$508K<0.01%-4,81313F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC10,870$467K<0.01%new13F-HRTimelineGroup
Tributary Capital Management, LLC10,748$462K0.04%013F-HR/ATimeline
ARIZONA STATE RETIREMENT SYSTEM10,536$453K<0.01%-7513F-HRTimeline
Yorktown Management & Research Co Inc9,900$425K0.34%new13F-HRTimeline
Police & Firemen's Retirement System of…9,741$418K<0.01%+2,02013F-HRTimeline
EARNEST PARTNERS LLC9,600$412K<0.01%013F-HRTimeline
STRS OHIO9,500$408K<0.01%new13F-HRTimeline
SkyOak Wealth, LLC9,387$403K0.08%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC9,328$401K0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS9,300$401K<0.01%+2,60013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…9,090$390K<0.01%013F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al8,848$380K<0.01%+1,80013F-HRTimeline
COMERICA BANK8,199$352K<0.01%-25613F-HRTimeline
PERSONAL CFO SOLUTIONS, LLC8,031$345K0.06%+24613F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd7,287$313K0.02%-45,61013F-HRTimelineGroup
AXQ CAPITAL, LP6,880$295K0.11%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC6,359$273K<0.01%-3,24513F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…6,222$267K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV6,166$265K<0.01%new13F-HRTimeline
Jain Global LLC6,160$265K<0.01%new13F-HRTimeline
Atom Investors LP6,115$263K0.02%new13F-HRTimeline
BARRETT & COMPANY, INC.6,013$258K0.09%+613F-HRTimeline
ProShare Advisors LLC5,906$254K<0.01%-1,32413F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …5,799$249K<0.01%new13F-HRTimelineGroup
INCEPTIONR LLC5,621$241K0.06%new13F-HRTimeline
GSA CAPITAL PARTNERS LLP5,533$238K0.02%-18,57013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC5,521$237K<0.01%-10,19713F-HRTimelineGroup
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC5,464$235K<0.01%-2,00013F-HRTimelineGroup
MML INVESTORS SERVICES, LLC5,166$222K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,012$215K0.01%-1513F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…4,923$211K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC4,710$202K<0.01%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC4,699$202K<0.01%new13F-HRTimelineGroup
DekaBank Deutsche Girozentrale4,553$192K<0.01%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…3,551$153K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,885$124K<0.01%-55413F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,009$78.1K<0.01%+1,06613F-HRTimelineGroup
State of Alaska, Department of Revenue1,582$67K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC1,541$66.2K<0.01%-25213F-HRTimeline
Essential Partners LLC1,356$58.2K0.02%+17713F-HRTimeline
AMALGAMATED BANK1,180$51K<0.01%013F-HRTimeline
Versant Capital Management, Inc1,145$49.2K0.01%013F-HRTimeline
CBIZ Investment Advisory Services, LLC1,042$44.9K<0.01%-113F-HRTimeline
Advisory Services Network, LLC959$41.2K<0.01%new13F-HRTimeline
State of Wyoming958$41.1K<0.01%new13F-HRTimeline
Binnacle Investments Inc938$40.3K0.02%+21013F-HRTimeline
MPWM ADVISORY SOLUTIONS, LLC805$34.6K0.02%-43513F-HRTimeline
GAMMA Investing LLC786$33.8K<0.01%+5013F-HRTimeline
Truvestments Capital LLC752$32.3K0.01%-86813F-HRTimeline
Parkside Financial Bank & Trust747$32.1K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\738$31.7K<0.01%-4,08813F-HRTimelineGroup
Federation des caisses Desjardins du Qu…687$29.5K<0.01%+29713F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…625$26.8K<0.01%+713F-HRTimelineGroup
EXCHANGE TRADED CONCEPTS, LLC617$26.5K<0.01%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC607$26.1K<0.01%new13F-HRTimeline
SIGNATUREFD, LLC602$25.9K<0.01%+1913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC597$25.7K<0.01%013F-HRTimeline