NSSC

Napco Security Technologies
Communication ServicesUSCUSIP 630402105◍ Confluence graph
Tracked 13F Holders
232
-125 QoQ
13F Value (tracked)
$1.3B
Insider Net · 180d
-$18.3M
0↑ 2↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)37 adding · 19 trimming
Insider net (180d)-$18.3M

Who owns NSSC?

232 tracked 13F filers

232 tracked 13F filers disclose a position in NSSC as of the latest SEC 13F filings, a combined $1.3B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$223.8M
5.7M
+76%
Added · +2.5M sh
Q1 2026
2Copeland Capital Management, LLC
$76.6M
2.0M
+0.4%
Added · +8K sh
Q2 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$59.3M
1.5M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$57.4M
1.5M
+5.1%
Added · +73K sh
Q2 2026
5VANGUARD PORTFOLIO MANAGEMENT LLC
$57.7M
1.5M
First observed position
No prior filed position
Q1 2026
6Janus Henderson Group Ltd.
$56.1M
1.4M
−9.2%
Reduced · −144K sh
Q1 2026
7GEODE CAPITAL MANAGEMENT, LLC
$45.5M
1.2M
+8.0%
Added · +89K sh
Q2 2026
8ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
$33.3M
846K
−2.1%
Reduced · −18K sh
Q1 2026
9PRUDENTIAL FINANCIAL INC
$29.5M
750K
New
+750K sh
Q1 2026
10DIMENSIONAL FUND ADVISORS LP
$27.7M
703K
+4.7%
Added · +32K sh
Q1 2026
11FIRST TRUST ADVISORS LP
$27.0M
685K
−4.1%
Reduced · −29K sh
Q1 2026
12Doma Perpetual Capital Management LLC
$23.8M
628K
Held
Q2 2026
13NORTHERN TRUST CORP
$23.0M
584K
−2.3%
Reduced · −14K sh
Q1 2026
14Point72 Asset Management, L.P.
$19.0M
482K
+87%
Added · +224K sh
Q1 2026
15ROYAL BANK OF CANADA
$18.8M
477K
−18%
Reduced · −104K sh
Q1 2026
16MORGAN STANLEY
$18.3M
465K
+9.8%
Added · +41K sh
Q1 2026
17RENAISSANCE TECHNOLOGIES LLC
$17.2M
437K
+31%
Added · +104K sh
Q1 2026
18JACOBS LEVY EQUITY MANAGEMENT, INC
$16.3M
413K
−0.5%
Reduced · −2K sh
Q1 2026
19DEPRINCE RACE & ZOLLO INC
$15.5M
409K
+244%
Added · +290K sh
Q2 2026
20GOLDMAN SACHS GROUP INC
$15.9M
403K
+30%
Added · +93K sh
Q1 2026
21Fundsmith LLP
$15.1M
384K
−78%
Reduced · −1.4M sh
Q1 2026
22ENVESTNET ASSET MANAGEMENT INC
$14.8M
376K
+2.7%
Added · +10K sh
Q1 2026
23CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$13.3M
339K
+7.5%
Added · +24K sh
Q1 2026
24Bank of New York Mellon Corp
$11.9M
303K
+40%
Added · +87K sh
Q1 2026
25AQR CAPITAL MANAGEMENT LLC
$11.2M
285K
−4.0%
Reduced · −12K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is NSSC being bought or sold by institutions?

Last quarter, 3 funds opened a new position in NSSC and 34 added to an existing one, while 19 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
3
funds
Added
34
funds
Reduced
19
funds
Exited
0
funds

Funds that own NSSC also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT127 funds$208.8B
META PLATFORMS INC-CLASS AMETA123 funds$85.8B
NVIDIA CORPNVDA121 funds$303.1B
JPMORGAN CHASE & COJPM121 funds$44.3B
APPLE INCAAPL119 funds$227.6B
AMAZON.COM INCAMZN119 funds$154.0B
ALPHABET INC-CL AGOOGL119 funds$120.0B
ELI LILLY & COLLY119 funds$60.7B
VISA INC-CLASS A SHARESV118 funds$45.8B
CHEVRON CORPCVX118 funds$24.2B
BROADCOM INCAVGO117 funds$122.0B
COSTCO WHOLESALE CORPCOST116 funds$29.4B

Ranked by how many of NSSC's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$18.3M
2 insiders
Net
-$18.3M
4 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Aug 27, 2026SOLOWAY RICHARDFounder and Executive Chairman, DirectorSell (S)380K$13.1M
Aug 27, 2026Soloway Donna AnneDirectorSell (S)21K$726K
Aug 26, 2026SOLOWAY RICHARDFounder and Executive Chairman, DirectorSell (S)95K$3.4M
Aug 26, 2026Soloway Donna AnneDirectorSell (S)28K$1.0M
Mar 3, 2026SOLOWAY RICHARDCEO, Chairman of Board, Secy, DirectorSell (S)55K$2.4M
Mar 2, 2026SOLOWAY RICHARDCEO, Chairman of Board, Secy, DirectorSell (S)130K$5.8M
Feb 5, 2026SOLOWAY RICHARDCEO, Chairman of Board, Secy, DirectorSell (S)150K$6.4M
Nov 17, 2025Spinelli Stephen MSenior Vice president of SalesSell (S)19K$765K
Jun 6, 2025Spinelli Stephen MSenior Vice President of SalesSell (S)5K$146K
Sep 12, 2024BEEBER PAUL STEPHENDirectorSell (S)708$26K
Jun 18, 2024Spinelli Stephen MSenior Vice President of SalesSell (S)3K$134K
Jun 18, 2024Spinelli Stephen MSenior Vice President of SalesSell (S)435$23K

Institutional ownership over time

103 funds-83 since Q3 2024
0114228Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $328.3M

Recent filings

15 shown

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Connected entities for NSSC

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Ask your agent what changed in NSSC

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/NSSC/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for NSSC.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for NSSC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.