NAPCO Security Technologies (NSSC) Institutional Ownership

$36.13 +0.18 (+0.50%)

Closing price 09/18/2026 04:00 PM Eastern

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$36.13 0.00 (0.00%)

As of 09/18/2026 07:30 PM Eastern

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Current Institutional Ownership Percentage: 85.07%
Number of Institutional Buyers (last 12 months): 147
Total Institutional Inflows (last 12 months): $612.46M

Number of Institutional Sellers (last 12 months): 102
Total Institutional Outflows (last 12 months): $194.46M

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NSSC Institutional Buying and Selling by Quarter

NAPCO Security Technologies Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
9/9/2026	WINTON GROUP Ltd	34,239	$1.30M	0.0%	+4.6%	0.096%
9/9/2026	Engineers Gate Manager LP	55,530	$2.11M	0.0%	+34.8%	0.155%
9/9/2026	Integrated Wealth Concepts LLC	1,215	$46K	0.0%	N/A	0.003%
8/27/2026	Corient Private Wealth LP	48,576	$1.85M	0.0%	+326.5%	0.136%
8/26/2026	HighTower Advisors LLC	112,128	$4.26M	0.0%	-5.1%	0.314%
8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	40,948	$1.56M	0.0%	N/A	0.115%
8/21/2026	SkyOak Wealth LLC	7,036	$267K	0.0%	+14.2%	0.020%
8/20/2026	Fundsmith LLP	606,974	$23.05M	0.2%	+58.2%	1.699%
8/20/2026	Two Sigma Securities LLC	8,548	$325K	0.0%	N/A	0.024%
8/19/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	196,242	$7.45M	0.0%	-27.9%	0.549%
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8/19/2026	Hsbc Holdings PLC	19,847	$751K	0.0%	-5.8%	0.056%
8/19/2026	Wellington Management Group LLP	1,102,280	$41.87M	0.0%	+18.6%	3.085%
8/17/2026	Raffles Associates LP	24,424	$928K	0.8%	N/A	0.068%
8/17/2026	Jacobs Equity LLC	14,144	$537K	0.4%	N/A	0.040%
8/17/2026	Corient Private Wealth LP	48,739	$1.85M	0.0%	N/A	0.136%
8/17/2026	Bank of America Corp DE	158,484	$6.02M	0.0%	N/A	0.444%
8/15/2026	Freestone Grove Partners LP	8,814	$335K	0.0%	N/A	0.025%
8/15/2026	Man Group plc	22,526	$856K	0.0%	N/A	0.063%
8/15/2026	Jupiter Topco LLC	1,682,208	$63.86M	0.0%	N/A	4.708%
8/14/2026	Raffles Associates LP	24,424	$928K	0.8%	N/A	0.068%
8/14/2026	Hsbc Holdings PLC	19,847	$751K	0.0%	N/A	0.056%
8/14/2026	PDT Partners LLC	93,227	$3.54M	0.2%	N/A	0.261%
8/14/2026	Canada Pension Plan Investment Board	71,300	$2.71M	0.0%	N/A	0.200%
8/14/2026	Legal & General Group Plc	84,279	$3.20M	0.0%	N/A	0.236%
8/14/2026	The Manufacturers Life Insurance Company	15,146	$575K	0.0%	N/A	0.042%
8/14/2026	Mcmorgan & Co. LLC	7,661	$291K	0.0%	N/A	0.021%
8/14/2026	Visionary Wealth Advisors	262,368	$9.97M	0.4%	N/A	0.734%
8/14/2026	Algert Global LLC	39,018	$1.48M	0.0%	-83.8%	0.109%
8/12/2026	Quantbot Technologies LP	6,636	$252K	0.0%	N/A	0.019%
8/12/2026	Ieq Capital LLC	13,902	$528K	0.0%	N/A	0.039%
8/8/2026	First National Bank of Omaha	40,823	$1.55M	0.0%	N/A	0.114%
8/7/2026	BlackRock Inc.	5,632,646	$213.93M	0.0%	N/A	15.766%
8/7/2026	Deutsche Bank AG	37,232	$1.41M	0.0%	N/A	0.104%
8/7/2026	Rice Hall James & Associates LLC	153,577	$5.83M	0.3%	N/A	0.430%
8/6/2026	Horizon Investment Services LLC	5,845	$222K	0.1%	N/A	0.016%
8/6/2026	Global Retirement Partners LLC	3,301	$125K	0.0%	N/A	0.009%
8/6/2026	Bank of New York Mellon Corp	311,009	$11.81M	0.0%	N/A	0.870%
8/6/2026	State of Wyoming	7,900	$300K	0.0%	N/A	0.022%
8/6/2026	GSA Capital Partners LLP	11,173	$424K	0.0%	N/A	0.031%
7/9/2026	Hennion & Walsh Asset Management Inc.	39,026	$1.48M	0.0%	+2.8%	0.109%
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6/18/2026	Pacer Advisors Inc.	6,251	$246K	0.0%	N/A	0.017%
5/19/2026	Bank of America Corp DE	221,765	$8.74M	0.0%	-28.6%	0.621%
5/19/2026	Janus Henderson Group PLC	1,424,963	$56.14M	0.0%	-9.2%	3.988%
5/18/2026	Amundi	5,304	$209K	0.0%	N/A	0.015%
5/18/2026	California State Teachers Retirement System	48,496	$1.91M	0.0%	+37.4%	0.136%
5/18/2026	Royal Bank of Canada	476,558	$18.77M	0.0%	-17.9%	1.334%
5/16/2026	The Manufacturers Life Insurance Company	15,562	$613K	0.0%	-2.3%	0.044%
5/16/2026	Quantinno Capital Management LP	19,464	$767K	0.0%	+3.2%	0.054%
5/16/2026	Lazard Asset Management LLC	14,312	$564K	0.0%	+6.2%	0.040%
5/15/2026	Rice Hall James & Associates LLC	146,773	$5.78M	0.3%	+1.3%	0.411%
5/14/2026	Healthcare of Ontario Pension Plan Trust Fund	32,213	$1.27M	0.0%	-17.0%	0.090%
5/14/2026	Renaissance Technologies LLC	436,800	$17.21M	0.0%	+31.1%	1.223%
5/14/2026	Gabelli Funds LLC	18,400	$725K	0.0%	-8.0%	0.051%
5/14/2026	Gamco Investors INC. ET AL	178,900	$7.05M	0.1%	-5.0%	0.501%
5/14/2026	Arrowstreet Capital Limited Partnership	846,040	$33.33M	0.0%	-2.1%	2.368%
5/14/2026	Sei Investments Co.	131,418	$5.18M	0.0%	+39.0%	0.368%
5/14/2026	Walleye Capital LLC	89,398	$3.52M	0.0%	+48.7%	0.250%
5/14/2026	State of Wyoming	11,343	$447K	0.1%	-4.2%	0.032%
5/13/2026	Cetera Investment Advisers	21,559	$849K	0.0%	-5.6%	0.060%
5/13/2026	First Trust Advisors LP	685,189	$26.99M	0.0%	-4.1%	1.918%
5/8/2026	PNC Financial Services Group Inc.	5,612	$221K	0.0%	+2,498.1%	0.016%
5/7/2026	Dimensional Fund Advisors LP	702,852	$27.68M	0.0%	+4.7%	1.971%
5/7/2026	KBC Group NV	651	$26K	0.0%	N/A	0.002%
5/6/2026	Copeland Capital Management LLC	2,009,089	$79.14M	1.8%	+41.4%	5.634%
5/6/2026	Financiere des Professionnels Fonds d investissement inc.	13,775	$543K	0.0%	N/A	0.039%
5/6/2026	Bessemer Group Inc.	292,867	$11.54M	0.0%	+1,888.1%	0.821%
5/5/2026	Mcmorgan & Co. LLC	7,751	$305K	0.0%	-31.7%	0.022%
5/5/2026	Bank of New York Mellon Corp	302,967	$11.93M	0.0%	+40.3%	0.850%
5/5/2026	Maryland State Retirement & Pension System	5,275	$208K	0.0%	N/A	0.015%
5/4/2026	Principal Financial Group Inc.	225,314	$8.88M	0.0%	+239.7%	0.632%
5/4/2026	Teachers Retirement System of The State of Kentucky	51,962	$2.05M	0.0%	+20.5%	0.146%
5/1/2026	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	8,820	$347K	0.0%	N/A	0.025%
5/1/2026	Fifth Third Bancorp	15,901	$626K	0.0%	N/A	0.045%
5/1/2026	Kornitzer Capital Management Inc. KS	169,353	$6.67M	0.1%	-0.6%	0.475%
4/30/2026	Hsbc Holdings PLC	21,068	$825K	0.0%	-9.4%	0.059%
4/30/2026	SkyOak Wealth LLC	6,162	$243K	0.0%	-31.2%	0.017%
4/30/2026	Granite Investment Partners LLC	267,526	$10.54M	0.6%	-4.8%	0.750%
4/30/2026	Isthmus Partners LLC	115,669	$4.56M	0.5%	-5.1%	0.324%
4/30/2026	Oregon Public Employees Retirement Fund	8,200	$323K	0.0%	N/A	0.023%
4/27/2026	Y Intercept Hong Kong Ltd	59,331	$2.34M	0.0%	+113.3%	0.166%
4/25/2026	Strs Ohio	17,800	$701K	0.0%	-2.7%	0.050%
4/24/2026	Deprince Race & Zollo Inc.	118,763	$4.68M	0.1%	+64.9%	0.333%
4/22/2026	Pictet Asset Management Holding SA	6,132	$242K	0.0%	+24.6%	0.017%
4/21/2026	Wasatch Advisors LP	242,585	$9.56M	0.1%	+10.7%	0.680%
4/21/2026	Louisiana State Employees Retirement System	15,800	$622K	0.0%	N/A	0.044%
4/20/2026	BTC Capital Management Inc.	8,331	$328K	0.0%	N/A	0.023%
4/20/2026	Blue Trust Inc.	1,108	$44K	0.0%	N/A	0.003%
4/20/2026	Banque Cantonale Vaudoise	5,340	$210K	0.0%	N/A	0.015%
4/16/2026	SG Americas Securities LLC	24,220	$954K	0.0%	-43.1%	0.068%
3/20/2026	Hsbc Holdings PLC	23,266	$981K	0.0%	N/A	0.065%
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3/17/2026	Rockefeller Capital Management L.P.	115,756	$4.83M	0.0%	-66.8%	0.325%
3/9/2026	Corient Private Wealth LLC	13,587	$567K	0.0%	-46.2%	0.038%
2/19/2026	Invesco Ltd.	49,109	$2.05M	0.0%	+16.1%	0.138%
2/19/2026	Corient Private Wealth LLC	23,587	$984K	0.0%	-6.6%	0.066%
2/19/2026	Jacobs Equity LLC	7,458	$311K	0.3%	N/A	0.021%
2/18/2026	Mercer Global Advisors Inc. ADV	5,845	$244K	0.0%	-5.2%	0.016%
2/18/2026	State of Tennessee Department of Treasury	7,620	$318K	0.0%	N/A	0.021%
2/18/2026	Cim LLC	12,613	$526K	0.1%	-4.2%	0.035%
2/18/2026	Uniplan Investment Counsel Inc.	115,050	$4.80M	1.3%	-4.7%	0.323%
2/18/2026	Voloridge Investment Management LLC	185,645	$7.74M	0.0%	-6.1%	0.521%

NSSC Institutional Ownership - Frequently Asked Questions

During the previous two years, 285 institutional investors and hedge funds held shares of NAPCO Security Technologies. The most heavily invested institutionals were BlackRock Inc. ($213.93M), Vanguard Group Inc. ($120.18M), FMR LLC ($85.08M), Copeland Capital Management LLC ($79.14M), Jupiter Topco LLC ($63.86M), Janus Henderson Group PLC ($56.14M), and Doma Perpetual Capital Management LLC ($50.05M).Learn more on NAPCO Security Technologies' institutional investors.

85.07% of NAPCO Security Technologies' stock is owned by institutional investors. Learn more on NSSC's institutional investor holdings.

Of the 240 institutional investors that purchased NAPCO Security Technologies' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($5.63M), Jupiter Topco LLC ($1.68M), Copeland Capital Management LLC ($1.68M), Wellington Management Group LLP ($1.12M), Fundsmith LLP ($1.05M), Arrowstreet Capital Limited Partnership ($893.32K), and Corient Private Wealth LLC ($768.63K).

Institutional investors have bought a total of 15,507,192 shares in the last 24 months. This purchase volume represents approximately $612.46M in transactions.

Of the 102 institutional investors that sold NAPCO Security Technologies' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: JPMorgan Chase & Co. ($680.30K), Algert Global LLC ($268.91K), Deutsche Bank AG ($265.53K), Millennium Management LLC ($251.93K), Rockefeller Capital Management L.P. ($232.82K), Envestnet Asset Management Inc. ($221.25K), and Tudor Investment Corp ET AL ($216.44K).

Institutional investors have sold a total of 4,638,375 shares in the last 24 months. This volume of shares sold represents approximately $194.46M in transactions.

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Institutional ownership data for NASDAQ:NSSC is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.

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NAPCO Security Technologies (NSSC) Institutional Ownership

NSSC Institutional Buying and Selling by Quarter

NAPCO Security Technologies Major Shareholders & Ownership History

NSSC Institutional Ownership - Frequently Asked Questions

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NAPCO Security Technologies (NSSC) Institutional Ownership

Institutional Ownership Changes (13F Filings) for NAPCO Security Technologies (NASDAQ:NSSC)

NSSC Institutional Buying and Selling by Quarter

NAPCO Security Technologies Major Shareholders & Ownership History

NSSC Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of NSSC shares?

What percentage of NAPCO Security Technologies' stock is owned by institutional investors?

Which institutional investors have been buying NAPCO Security Technologies' stock?

How much institutional buying is happening at NAPCO Security Technologies?

Which of NAPCO Security Technologies' major shareholders have been selling company stock?

How much institutional selling is happening at NAPCO Security Technologies?

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