258 institutional investment managers reported NSSC positions in their Form 13F filings for Q2 2026, holding 36,154,504 shares worth $1.4B in total. BlackRock, Inc. reported the largest position.

Are funds buying or selling NSSC?

In Q2 2026, 29 managers opened new NSSC positions, 106 added, 87 trimmed and 38 sold out. Managers that filed in both quarters added a net 1,258,730 shares.

How current is this NSSC institutional ownership data?

It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Funds · NSSC

Who owns NSSC?

Institutional ownership of NAPCO Security Technologies Inc. from Form 13F, Q2 2026

258 institutional managers reported holding NAPCO Security Technologies Inc. (NSSC) in Form 13F filings for Q2 2026, with 36,154,504 shares worth $1.4B. The largest reported holder was BlackRock, Inc. Managers that filed both quarters added a net 1,258,730 shares (+3.8%). 29 opened new positions and 38 sold out.

Funds holding: 258
Value held: $1.4B
New / sold out: 29 / 38
Net shares, same filers: +3.8%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of NSSC

Fund	Value	Share of 13F holdings	Shares	Move
BlackRock, Inc.	$214M	15.6%	5,632,646	Trimmed
Copeland Capital Management, LLC	$76.6M	5.6%	2,016,873	Added
Jupiter Topco LLC	$63.9M	4.7%	1,682,208	First report
Vanguard Capital Management LLC	$58.0M	4.2%	1,526,818	Added
State Street Corp	$57.4M	4.2%	1,504,759	Added
Vanguard Portfolio Management LLC	$56.8M	4.1%	1,494,431	Added
First Trust Advisors LP	$49.5M	3.6%	1,304,074	Added
Geode Capital Management, LLC	$45.5M	3.3%	1,196,951	Added
Wellington Management Group LLP	$41.9M	3.0%	1,102,280	Added
Morgan Stanley	$36.5M	2.7%	959,777	Added
Dimensional Fund Advisors LP	$27.6M	2.0%	725,550	Added
Arrowstreet Capital, Limited Partnership	$26.5M	1.9%	697,937	Trimmed
Doma Perpetual Capital Management LLC	$23.8M	1.7%	627,931	Unchanged
Northern Trust Corp	$23.2M	1.7%	610,616	Added
Fundsmith LLP	$23.1M	1.7%	606,974	Added
Bessemer Group Inc	$16.4M	1.2%	430,452	Added
Deprince Race & Zollo Inc	$15.5M	1.1%	408,632	Added
Royal Bank of Canada	$15.4M	1.1%	406,408	Trimmed
Renaissance Technologies LLC	$15.4M	1.1%	406,200	Trimmed
Point72 Asset Management, L.P.	$14.4M	1.1%	379,686	Trimmed
Envestnet Asset Management Inc	$14.4M	1.0%	378,803	Added
Goldman Sachs Group Inc	$14.0M	1.0%	369,290	Trimmed
Charles Schwab Investment Management Inc	$13.5M	1.0%	354,531	Added
Bank of New York Mellon Corp	$11.8M	0.9%	311,009	Added
AQR Capital Management LLC	$11.2M	0.8%	295,923	Added

Share of 13F holdings is each fund's shares as a share of the 36,154,504 NSSC shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

First Trust Advisors LP Added+$23.5M
Morgan Stanley Added+$18.8M
Deprince Race & Zollo Inc Added+$11.0M
Fundsmith LLP Added+$8.5M
Healthcare of Ontario Pension Plan Trust Fund Added+$7.3M
Wellington Management Group LLP Added+$6.6M
Los Angeles Capital Management LLC Added+$5.8M
Bessemer Group Inc Added+$5.2M
HRT Financial LP Added+$5.2M
UBS Group AG Added+$4.4M

Biggest sellers in Q2 2026

Prudential Financial Inc Trimmed-$18.0M
Jacobs Levy Equity Management, Inc Trimmed-$8.0M
Algert Global LLC Trimmed-$7.7M
Man Group plc Trimmed-$7.1M
Qube Research & Technologies Ltd Sold out-$6.6M
Arrowstreet Capital, Limited Partnership Trimmed-$5.6M
Uniplan Investment Counsel, Inc. Sold out-$4.5M
CenterBook Partners LP Trimmed-$4.4M
Point72 Asset Management, L.P. Trimmed-$3.9M
Walleye Capital LLC Sold out-$3.5M

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $166M and sold $119M; 106 added and 87 trimmed.

Questions about NSSC ownership

Who owns NSSC stock?: 258 institutional investment managers reported NSSC positions in their Form 13F filings for Q2 2026, holding 36,154,504 shares worth $1.4B in total. BlackRock, Inc. reported the largest position.
Are funds buying or selling NSSC?: In Q2 2026, 29 managers opened new NSSC positions, 106 added, 87 trimmed and 38 sold out. Managers that filed in both quarters added a net 1,258,730 shares.
How current is this NSSC institutional ownership data?: It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to NSSC by CUSIP. Options are left out. NSSC news and filings · NSSC insider trades · Top funds