NSSC

Napco Security Technologies$36.67 3.12%
Communication ServicesUSCUSIP 630402105· EOD Jul 16, 2026◍ Confluence graph
Tracked 13F Holders
202
+13 QoQ
13F Value (tracked)
$1.2B
Insider Net · 180d
-$14.6M
0↑ 1↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)31 adding · 19 trimming
Insider net (180d)-$14.6M

Price & smart-money activity

$36.67 3.12%5Y +118.6%
$13.05$25.12$37.19$49.26$61.332021202220232024202520266121620142614151425146212253223472636402293374021346304836513846475534514450483615464
Hover for who · click for detailEnd-of-day closing prices52w $29.57 – $47.23
Build

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.

Top institutional holders

202 tracked 13F filers
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$223.8M
5.7M
+76%
Added · +2.5M sh
Q1 2026
2Copeland Capital Management, LLC
$79.1M
2.0M
+41%
Added · +588K sh
Q1 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$59.3M
1.5M
New
+1.5M sh
Q1 2026
4VANGUARD PORTFOLIO MANAGEMENT LLC
$57.7M
1.5M
New
+1.5M sh
Q1 2026
5STATE STREET CORP
$56.5M
1.4M
+60%
Added · +535K sh
Q1 2026
6JANUS HENDERSON GROUP PLC
$56.1M
1.4M
−9.2%
Reduced · −144K sh
Q1 2026
7GEODE CAPITAL MANAGEMENT, LLC
$43.7M
1.1M
+7.7%
Added · +79K sh
Q1 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
$24.7M
628K
Held
Q1 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
19GOLDMAN SACHS GROUP INC
$15.9M
403K
+30%
Added · +93K sh
Q1 2026
20Fundsmith LLP
$15.1M
384K
−78%
Reduced · −1.4M sh
Q1 2026
21ENVESTNET ASSET MANAGEMENT INC
$14.8M
376K
+2.7%
Added · +10K sh
Q1 2026
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$13.3M
339K
+7.5%
Added · +24K sh
Q1 2026
23Bank of New York Mellon Corp
$11.9M
303K
+40%
Added · +87K sh
Q1 2026
24AQR CAPITAL MANAGEMENT LLC
$11.2M
285K
−4.0%
Reduced · −12K sh
Q1 2026
25UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME
$10.7M
272K
+108%
Added · +141K 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.

Fund activity: latest quarter

Opened (NEW)
3
funds
Added
28
funds
Reduced
19
funds
Exited
0
funds

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$14.6M
1 insiders
Net
-$14.6M
3 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)4K$108K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)10K$229K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$88K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$122K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$65K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)4K$16K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)4K$108K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)10K$229K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$88K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$122K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)8K$65K
May 18, 2026Soloway Donna AnneDirectorOption exercise (M)4K$16K

Institutional ownership over time

201 funds+36 since Q3 2024
0101201Q3 2024Q1 2025Q3 2025Q1 2026
funds holding aggregate valuelatest $1.2B

Funds that own NSSC also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT86 funds$35.0B
APPLE INCAAPL84 funds$40.3B
NVIDIA CORPNVDA83 funds$49.3B
ALPHABET INC-CL AGOOGL83 funds$22.7B
BROADCOM INCAVGO83 funds$18.5B
META PLATFORMS INC-CLASS AMETA83 funds$15.9B
JPMORGAN CHASE & COJPM83 funds$10.8B
ELI LILLY & COLLY83 funds$9.6B
UNITEDHEALTH GROUP INCUNH83 funds$3.1B
AMAZON.COM INCAMZN82 funds$26.1B
VISA INC-CLASS A SHARESV82 funds$7.9B
LAM RESEARCH CORPLRCX82 funds$4.2B

Ranked by how many of NSSC's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

15 shown

Browse more

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. Every panel above is one call to the Arkolith API & MCP server.