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Disclosery

NSSC NAPCO SEC TECHNOLOGIES INC

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Stock (common), issuer CIK 69633

249 managers (258 13F filers) reported a position in NSSC shares at 2026-06-30, 36,108,671 shares in all. 28 filers opened a position and 37 filers sold out during the quarter.

Managers
249
13F filers
258
New
28
Added
106
Reduced
90
Sold out
37
Shares held by filers
36,108,671

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 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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.5,632,646$214M<0.01%-49,12413F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding3,321,811$126M+55,165Timeline
Copeland Capital Management, LLC2,016,873$76.6M1.57%+7,78413F-HRTimeline
Jupiter Topco LLCin group Janus Henderson1,682,208$63.9M0.03%13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,504,759$57.4M<0.01%+73,25613F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP1,304,074$49.5M0.03%+618,88513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,196,951$45.5M<0.01%+88,85913F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,102,280$41.9M0.01%+172,68113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY959,777$36.5M<0.01%+494,91613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP725,550$27.6M<0.01%+22,69813F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …697,937$26.5M0.01%-148,10313F-HRTimelineGroup
Doma Perpetual Capital Management LLC627,931$23.8M5.54%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP610,616$23.2M<0.01%+26,28913F-HRTimelineGroup
Fundsmith LLP606,974$23.1M0.17%+223,37813F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC430,452$16.4M0.02%+137,58513F-HRTimelineGroup
DEPRINCE RACE & ZOLLO INC408,632$15.5M0.26%+289,86913F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA406,408$15.4M<0.01%-70,15013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC406,200$15.4M0.02%-30,60013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.379,686$14.4M0.02%-102,58613F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC378,803$14.4M<0.01%+3,16513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC369,290$14M<0.01%-34,00413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding363,526$13.8M+40,731Timeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co354,531$13.5M<0.01%+15,97113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp311,009$11.8M<0.01%+8,04213F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC295,923$11.2M<0.01%+10,89513F-HRTimelineGroup
CONGRESS ASSET MANAGEMENT CO285,462$10.8M0.07%+33,06013F-HRTimeline
CAPTRUST FINANCIAL ADVISORS278,678$10.6M0.02%+4,25913F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.277,694$10.5M0.02%+8,05213F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC274,820$10.4M0.01%-475,21013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC274,050$10.4M0.04%+152,59813F-HRTimeline
Granite Investment Partners, LLC266,069$10.1M0.52%-1,45713F-HRTimeline
Visionary Wealth Advisors262,368$9.96M0.39%-3313F-HRTimeline
Trexquant Investment LP261,334$9.93M0.06%+90,19613F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…256,442$9.74M0.01%+42,65513F-HRTimelineGroup
Nuveen, LLCin group TIAA255,569$9.71M<0.01%+56,44013F-HRTimelineGroup
WASATCH ADVISORS LP242,585$9.21M0.06%013F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC230,017$8.74M<0.01%+4,70313F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…224,298$8.52M0.01%+192,08513F-HRTimeline
CRAWFORD INVESTMENT COUNSEL INC223,794$8.5M0.14%+84,50613F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO214,871$8.07M<0.01%+112,30813F-HRTimelineGroup
HRT FINANCIAL LP202,166$7.68M0.01%+136,34413F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC201,670$7.66M0.03%-211,11813F-HRTimeline
GAMCO Investors (Gabelli)group of 2 filers holding197,300$7.49M0Timeline
Invesco Ltd.in group Invesco Ltd.190,854$7.25M<0.01%+66,46513F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND186,274$7.07M0.01%+113,35913F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…178,187$6.79M0.01%+59,39413F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP172,667$6.56M<0.01%+86,46713F-HRTimelineGroup
SG Capital Management LLC170,793$6.49M0.59%+63,62513F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS168,717$6.41M0.13%-63613F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/158,484$6.02M<0.01%-63,28113F-HRTimelineGroup
RICE HALL JAMES & ASSOCIATES, LLC153,577$5.83M0.28%+6,80413F-HRTimeline
Public Sector Pension Investment Board153,239$5.82M0.02%+25,68513F-HR/ATimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO134,961$5.13M<0.01%+3,54313F-HRTimelineGroup
ISTHMUS PARTNERS, LLC117,950$4.48M0.43%+2,28113F-HRTimeline
Redmond Asset Management, LLC117,784$4.47M1.12%-93013F-HRTimeline
HighTower Advisors, LLC112,128$4.26M<0.01%-6,00113F-HRTimeline
ALTA CAPITAL MANAGEMENT LLC/109,200$4.15M0.31%-11,33013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC97,700$3.71M<0.01%+7,22913F-HRTimelineGroup
Vest Financial, LLC96,069$3.65M0.04%+50,66613F-HRTimeline
PDT Partners, LLC93,227$3.54M0.19%-24,05313F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP93,156$3.54M<0.01%-53713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc84,279$3.2M<0.01%+1,04313F-HRTimelineGroup
Bridge City Capital, LLC84,131$3.2M0.73%+25,52113F-HRTimeline
RHUMBLINE ADVISERS83,395$3.17M<0.01%-10,17113F-HRTimeline
Linden Thomas Advisory Services, LLC80,539$3.06M0.25%+8,06713F-HRTimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding80,521$3.06M-72,053Timeline
CANADA PENSION PLAN INVESTMENT BOARD71,300$2.71M<0.01%-91,10013F-HRTimeline
Swiss National Bank70,000$2.66M<0.01%-40013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC66,266$2.52M<0.01%+1,54313F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…64,611$2.45M0.02%+12,64913F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE60,650$2.39M<0.01%013F-HRTimelineGroup
SG Americas Securities, LLC62,694$2.38M<0.01%+38,47413F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC60,130$2.28M0.02%+11,23913F-HRTimelineGroup
Quantinno Capital Management LP58,972$2.24M<0.01%+39,50813F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC58,024$2.2M<0.01%+9,50513F-HRTimeline
Corient Private Wealth LPgroup of 2 filers holding56,646$2.15M+37,186Timeline
Engineers Gate Manager LP55,530$2.11M0.03%+14,34813F-HRTimeline
Divisadero Street Capital Management, LPin group Divisadero Street Capital Man…50,799$1.93M0.05%013F-HRTimelineGroup
SEIZERT CAPITAL PARTNERS, LLC48,631$1.85M0.08%+3,79613F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC48,084$1.83M<0.01%+5,08213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN41,503$1.58M<0.01%+20,04513F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al40,948$1.56M0.01%+25,20013F-HRTimeline
Gotham Asset Management, LLC39,438$1.5M<0.01%-6,64413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…39,313$1.49M<0.01%-9,18313F-HR/ATimeline
Hennion & Walsh Asset Management, Inc.39,026$1.48M0.04%+1,06913F-HRTimeline
ALGERT GLOBAL LLC39,018$1.48M0.02%-202,13813F-HRTimeline
ALLIANCEBERNSTEIN L.P.36,250$1.43M<0.01%-1,39213F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\37,232$1.41M<0.01%+5,75713F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.34,513$1.31M0.02%-3,23813F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
WINTON GROUP Ltdin group WINTON GROUP Ltd34,239$1.3M0.04%+1,49113F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/34,030$1.29M<0.01%+2,99413F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.33,487$1.27M0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC31,044$1.18M<0.01%+16,89913F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…30,449$1.16M<0.01%+3,11313F-HRTimeline
Creative Planningin group Creative Planning30,383$1.15M<0.01%-6,62713F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC29,415$1.12M0.01%+6,72313F-HRTimelineGroup
HERITAGE INVESTORS MANAGEMENT CORP29,097$1.1M0.03%013F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…28,967$1.1M<0.01%-45,82313F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co28,371$1.08M<0.01%-1,31413F-HRTimelineGroup
LPL Financial LLC27,686$1.05M<0.01%-1,01413F-HRTimeline
Financiere des Professionnels - Fonds d…27,528$1.05M0.06%+13,75313F-HRTimeline
GW&K Investment Management, LLC27,117$1.03M0.01%+50413F-HRTimeline
Y-Intercept (Hong Kong) Ltd26,442$1M0.02%-32,88913F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS25,659$975K<0.01%-87,29113F-HRTimelineGroup
State of Tennessee, Department of Treas…24,722$939K<0.01%+1,17813F-HRTimeline
Harbour Capital Advisors, LLC25,970$937K0.17%+14,54513F-HRTimeline
RAFFLES ASSOCIATES LP24,424$928K0.79%013F-HR/ATimeline
DARK FOREST CAPITAL MANAGEMENT LP24,143$917K0.06%new13F-HRTimeline
STRS OHIO23,100$877K<0.01%+5,30013F-HRTimeline
NORGES BANK22,935$871K<0.01%new13F-HRTimeline
Man Group plcin group Man Group plc22,526$856K<0.01%-187,10413F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources21,611$821K<0.01%-2013F-HRTimelineGroup
Voleon Capital Management LP21,556$819K0.01%-31,31213F-HRTimeline
Cambridge Investment Research Advisors,…21,507$817K<0.01%+16613F-HR/ATimeline
HARBOR CAPITAL ADVISORS, INC.21,137$803K0.05%+3,32313F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…20,407$775K<0.01%+83813F-HRTimelineGroup
Illinois Municipal Retirement Fund20,050$761K0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC19,990$759K<0.01%+8,70713F-HRTimelineGroup
Cetera Investment Advisers19,840$754K<0.01%-1,71913F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC19,847$751K<0.01%-1,22113F-HRTimelineGroup
Jain Global LLC19,377$736K0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS18,400$701K<0.01%013F-HRTimeline
State of Alaska, Department of Revenue18,453$699K0.01%-5,83513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…18,262$694K0.01%+11,00713F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC18,008$684K<0.01%-81,23013F-HRTimeline
CenterBook Partners LP17,532$666K0.03%-114,93513F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…17,345$626K<0.01%+24613F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…16,066$610K<0.01%-11513F-HRTimelineGroup
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise16,058$610K0.03%+10,71813F-HRTimelineGroup
Louisiana State Employees Retirement Sy…15,700$596K0.01%-10013F-HR/ATimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…15,617$593K<0.01%-28413F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …15,146$575K<0.01%-41613F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP15,011$570K<0.01%-34613F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC14,329$544K<0.01%+1713F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …14,307$543K<0.01%+2,07613F-HRTimelineGroup
Jacobs Equity LLC14,144$537K0.37%new13F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC14,011$532K<0.01%-1,15313F-HRTimelineGroup
IEQ CAPITAL, LLC13,902$528K<0.01%-15,41113F-HRTimeline
CIM, LLC12,753$484K0.06%+22713F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC12,504$475K<0.01%-1,17613F-HRTimelineGroup
BTC Capital Management, Inc.in group BTC Capital Management, Inc.12,080$474K0.03%+3,74913F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC12,167$462K<0.01%-5,24913F-HRTimelineGroup
Legato Capital Management LLC11,997$456K0.04%+3,88013F-HRTimeline
AVIVA PLCin group AVIVA PLC11,980$455K<0.01%+1,43613F-HRTimelineGroup
ALPS ADVISORS INC11,789$448K<0.01%+16113F-HRTimeline
GSA CAPITAL PARTNERS LLP11,173$424K0.03%-22,01613F-HRTimeline
Police & Firemen's Retirement System of…10,290$391K<0.01%+1,36813F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS9,989$379K<0.01%-14,00013F-HRTimeline
Yorktown Management & Research Co Inc9,900$376K0.23%013F-HRTimeline
EARNEST PARTNERS LLC9,600$365K<0.01%013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM9,595$364K<0.01%-19913F-HRTimeline
AMALGAMATED BANK9,574$364K<0.01%-65813F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC9,566$363K<0.01%+1113F-HRTimeline
SENTINEL PENSION ADVISORS, LLC10,046$363K0.05%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…9,090$345K<0.01%-23,03913F-HRTimeline
Freestone Grove Partners LP8,814$335K<0.01%+28713F-HRTimeline
TWO SIGMA SECURITIES, LLC8,548$325K0.03%new13F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…8,472$322K<0.01%-34813F-HRTimeline
Snowden Capital Advisors LLC8,377$319K0.01%-2,12613F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC8,331$316K<0.01%-1,85413F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND8,100$308K<0.01%-10013F-HRTimeline
Entropy Technologies, LP8,078$307K0.01%new13F-HRTimeline
PERSONAL CFO SOLUTIONS, LLC8,033$306K0.04%+18313F-HRTimeline
EntryPoint Capital, LLC8,032$305K0.07%new13F-HRTimeline
State of Wyoming7,900$300K0.03%-3,44313F-HRTimeline
MCMORGAN & CO LLC7,661$291K0.04%-9013F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpin group Mitsubishi UFJ Trust & Bankin…7,587$288K<0.01%new13F-HRTimelineGroup
Arax Advisory Partners7,211$274K<0.01%+5,80913F-HRTimeline
SkyOak Wealth, LLC7,036$267K0.04%+87413F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC6,791$258K<0.01%+84713F-HRTimelineGroup
Quantbot Technologies LP6,636$252K0.01%+4,82113F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …6,465$246K<0.01%+66613F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…6,132$233K<0.01%013F-HRTimelineGroup
Horizon Investment Services, LLC5,845$222K0.06%new13F-HRTimeline
STEEL GROVE CAPITAL ADVISORS, LLC5,553$211K0.02%-5613F-HRTimeline
Cornerstone Investment Partners, LLC5,379$204K0.01%-25313F-HRTimeline
BARRETT & COMPANY, INC.5,351$203K0.06%-67113F-HRTimeline
Kemnay Advisory Services Inc.4,729$180K0.02%+2,38413F-HRTimeline
DekaBank Deutsche Girozentrale4,553$175K<0.01%013F-HRTimeline
Pacer Advisors, Inc.4,436$168K<0.01%-1,81513F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…3,551$135K<0.01%013F-HRTimeline
FMR LLCin group FMR LLC3,360$128K<0.01%-36713F-HRTimelineGroup
Global Retirement Partners, LLC3,301$125K<0.01%13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…3,201$122K<0.01%-2,41113F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,166$120K<0.01%+28113F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC1,922$73.3K<0.01%+1,28813F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1,394$52.9K<0.01%+1,39313F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,377$52.3K<0.01%-1,22213F-HRTimelineGroup
Integrated Wealth Concepts LLC1,215$46.1K<0.01%new13F-HRTimeline
Versant Capital Management, Inc1,131$43K<0.01%-1413F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…990$38K<0.01%new13F-HRTimeline
GAMMA Investing LLC959$36.4K<0.01%-8213F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.898$34.2K<0.01%-52013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…823$31.3K<0.01%-4813F-HRTimelineGroup
Blue Trust, Inc.811$30.8K<0.01%-29713F-HRTimeline
MPWM ADVISORY SOLUTIONS, LLC805$30.6K0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP777$29K<0.01%+14913F-HRTimelineGroup
Federation des caisses Desjardins du Qu…746$28.3K<0.01%013F-HRTimeline
Cornerstone Planning Group LLC666$23.7K<0.01%+2313F-HRTimeline
Farther Finance Advisors, LLC583$22.1K<0.01%-41313F-HRTimeline