Napco Security Technologies, Inc

NSSC

Exchange: Nasdaq
Industry: Communications Equipment, NEC
SEC CIK: 0000069633

SEC filings (opens in a new tab)

In the last 90 days, Napco Security Technologies, Inc insiders filed 0 open-market purchases and 2 sales; 258 institutions reported holding it in 13F filings for Q2 2026, worth $1.37B in total; Fundsmith is the only superinvestor holding it.

Q1 2026 vs. Q4 2025

How the institutions holding Napco Security Technologies, Inc changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of NSSC: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	254	5	271	+22
Shares	31.6M	2.92M	34.7M	+5.99M (+20.9%)
Value	$1.32B	$121.6M	$1.37B	+$169.6M (+14.2%)

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (51)

Institutions that held Napco Security Technologies, Inc at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to NSSC in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	1,505,177	$59.3M	0.00%
Vanguard Portfolio Management LLC	1,464,212	$57.7M	0.00%
Prudential Financial Inc	750,030	$29.5M	0.04%
Vanguard Fiduciary Trust Co	246,641	$9.72M	0.00%
Ameriprise Financial Inc	64,723	$2.55M	0.00%
Vident Advisory, LLC	48,891	$1.93M	0.02%
Raymond James Financial Inc	43,002	$1.69M	0.00%
Winton Group Ltd	32,748	$1.29M	0.05%
Twinbeech Capital LP	26,100	$1.03M	0.11%
Vanguard Asset Management, Ltd	24,999	$984.7K	0.00%
Ellsworth Advisors, LLC	18,774	$739.5K	0.14%
Harbor Capital Advisors, Inc.	17,814	$702.0K	0.06%
Vanguard Global Advisers, LLC	17,581	$692.5K	0.00%
Fifth Third Bancorp	15,901	$626.3K	0.00%
Louisiana State Employees Retirement System	15,800	$622.4K	0.01%
XTX Topco Ltd	14,486	$570.6K	0.01%
Financiere des Professionnels - Fonds d,investissement inc.	13,775	$542.6K	0.03%
Harbour Capital Advisors, LLC	11,425	$517.4K	0.10%
Yousif Capital Management, LLC	9,555	$376.4K	0.00%
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	8,820	$347.4K	0.00%
Freestone Grove Partners LP	8,527	$335.9K	0.00%
BTC Capital Management, Inc.	8,331	$328.2K	0.02%
Oregon Public Employees Retirement Fund	8,200	$323.0K	0.00%
Verdad Advisers, LP	8,091	$318.7K	0.36%
Vanguard Investments Australia, Ltd.	8,036	$316.5K	0.00%
GWN Securities Inc.	7,521	$296.3K	0.06%
Pacer Advisors, Inc.	6,251	$246.0K	0.00%
Swiss Life Asset Management Ltd	6,158	$242.6K	0.00%
Scientech Research LLC	5,737	$226.0K	0.19%
Cornerstone Investment Partners, LLC	5,632	$221.8K	0.01%
Banque Cantonale Vaudoise	5,340	$210.0K	0.01%
Amundi	5,304	$209.0K	0.00%
Maryland State Retirement & Pension System	5,275	$207.8K	0.00%
Ronald Blue Trust, Inc.	1,108	$43.6K	0.00%
Advisory Services Network, LLC	1,020	$40.2K	0.00%
KBC Group NV	651	$26.0K	0.00%
Centerpoint Advisors, LLC	452	$18.0K	0.01%
Salomon & Ludwin, LLC	346	$13.8K	0.00%
Whipplewood Advisors, LLC	108	$4.25K	0.00%
TD Private Client Wealth LLC	80	$3.15K	0.00%
Steward Partners Investment Advisory, LLC	67	$2.64K	0.00%
Pinnacle Wealth Planning Services, Inc.	67	$2.64K	0.00%
Golden State Equity Partners	50	$1.97K	0.00%
MAI Capital Management	46	$1.81K	0.00%
Farmers & Merchants Investments Inc	20	$788	0.00%
Umb Bank N A	17	$670	0.00%
Caitong International Asset Management Co., Ltd	10	$394	0.00%
Gilpin Wealth Management, LLC	6	$237	0.00%
Abound Wealth Management	4	$158	0.00%
Ankerstar Wealth, LLC	3	$118	0.00%
GHP Investment Advisors, Inc.	2	$79	0.00%

Sold out (29)

Institutions that held Napco Security Technologies, Inc at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of NSSC in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Adage Capital Partners GP, L.L.C.	243,510	$10.2M
Tudor Investment Corp Et Al	200,489	$8.36M
Danske Bank A/S	130,235	$5.43M
4D Advisors, LLC	100,000	$4.17M
D. E. Shaw & Co., Inc.	75,362	$3.14M
Verition Fund Management LLC	63,535	$2.65M
Acadian Asset Management LLC	61,117	$2.54M
Jump Financial, LLC	56,580	$2.36M
Jane Street Group, LLC	35,912	$1.50M
Quest Partners LLC	32,551	$1.36M
Two Sigma Advisers, LP	27,700	$1.16M
Versor Investments LP	13,027	$543.2K
Polen Capital Management LLC	12,567	$524.0K
Mangrove Partners	11,471	$478.3K
Numerai GP LLC	10,383	$433.0K
Aquatic Capital Management LLC	8,521	$355.3K
Jacobs Equity LLC	7,458	$311.0K
MML Investors Services, LLC	5,237	$218.4K
Jain Global LLC	5,160	$215.2K
Toroso Investments, LLC	5,105	$212.9K
Walleye Trading LLC	4,607	$192.1K
Kestra Advisory Services, LLC	4,542	$189.4K
Simplex Trading, LLC	3,376	$140.8K
CBIZ Investment Advisory Services, LLC	1,039	$43.5K
Maseco LLP	590	$24.6K
Quarry LP	156	$6.50K
SJS Investment Consulting Inc.	5	$209
Larson Financial Group LLC	4	$167
Clearstead Advisors, LLC	1	$42

Not filed for Q1 2026 yet (5)

Institutions that held Napco Security Technologies, Inc at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding NSSC in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	2,882,063	$120.2M
Norges Bank	22,935	$956.4K
Comerica Bank	7,626	$318.0K
Global Retirement Partners, LLC	3,475	$144.9K
CIBC Private Wealth Group, LLC	29	$1.21K