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NSSC · Napco Security Technologies, Inc · Shareholders & Ownership

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$36.45 +0.54 (+1.50%)
Market Cap
$1.28B
Shares
35.77M
Volume · Oct 20 206.66K Avg daily vol (3M) 366.65K

Every disclosed holder of NSSC in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns NSSC

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 36,235,394 101.31%
Insiders (Forms 3, 4, 5) 739,435 2.07%
13D/G-only blocks 2,109,212 5.90%
Remaining 3,315,604 -9.27%
Registered funds (N-PORT, not summed) 14,850,045 41.52%

Shares outstanding: 35,768,437, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of NSSC

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
5,632,646
1.1
iShares Core S&P Small-Cap ETF
Fund S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,152,901
1.2
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
896,841
1.3
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
322,041
1.4
iShares S&P Small-Cap 600 Growth ETF
Fund S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
210,657
1.5
iShares S&P Small-Cap 600 Value ETF
Fund S000004316 · Registered fund · Jun 30, 2026
iShares Trust, not summed
105,056
2
T. Rowe Price Investment Management, Inc.
13G CIK 1897612 · Investment adviser · Dec 31, 2023
2,109,212
3
Copeland Capital Management, LLC
13F CIK 1541743 · Investment adviser · Sep 30, 2026
2,081,286
3.1
Copeland Capital Management, LLC
13G CIK 1541743 · Investment adviser · Sep 30, 2026
Rule 13d-1(b), qualified institution, not summed
2,081,285
4
Jupiter Topco LLC
13F CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,682,208
4.1
Janus Henderson Small Cap Value Fund
Fund S000010480 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
264,432
5
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,526,818
5.1
VANGUARD CAPITAL MANAGEMENT LLC
13G CIK 2100119 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
1,794,370
6
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,504,759
6.1
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
328,062
6.2
State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF
Fund S000006990 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
129,245
6.3
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
128,710
6.4
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
63,356
6.5
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
12,156
7
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,494,431
8
FIRST TRUST ADVISORS LP
13F CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,304,074
8.1
FT Vest SMID Rising Dividend Achievers Target Income ETF
Fund S000081275 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded Fund IV, not summed
96,229
8.2
First Trust SMID Growth Strength ETF
Fund S000058148 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund VI, not summed
6,123
9
First Trust SMID Cap Rising Dividend Achievers ETF
Fund S000059604 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund VI, not summed
1,220,852
10
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,196,951
11
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,102,280
12
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,083,024
13
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
959,777
13.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
208
14
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
898,187
15
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
725,550
15.1
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
157,487
15.2
U.S. MICRO CAP PORTFOLIO
Fund S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
124,324
15.3
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
117,546
15.4
U.S. Small Cap Growth Portfolio
Fund S000039439 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
45,835
15.5
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
38,548
16
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
697,937
17
Doma Perpetual Capital Management LLC
13F CIK 1962221 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
627,931
18
SOLOWAY RICHARD
Insider CIK 1254037 · Aug 27, 2026
Director, CEO, Chairman of Board, Secy, issuer-wide
621,958
18.1
Richard L. Soloway
13D CIK 1254037 · Mar 5, 2024
not summed
1,770,010
19
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
610,616
19.1
Small Cap Index Fund
Fund S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
17,667
19.2
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
3,244
20
Fundsmith LLP
13F CIK 1569205 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
606,974
21
DEPRINCE RACE & ZOLLO INC
13F CIK 1008894 · Registered investment adviser · Sep 30, 2026
479,829
22
BESSEMER GROUP INC
13F CIK 1054074 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
430,452
22.1
Old Westbury Small & Mid Cap Strategies Fund
Fund S000001857 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
160,209
22.2
Old Westbury Total Equity Fund
Fund S000090405 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
13,851
23
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
408,854
24
ROYAL BANK OF CANADA
13F CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
406,408
25
RENAISSANCE TECHNOLOGIES LLC
13F CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
406,200
26
Point72 Asset Management, L.P.
13F CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
379,686
27
ENVESTNET ASSET MANAGEMENT INC
13F CIK 1407543 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
378,803
28
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
369,290
28.1
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
28,038
28.2
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
8,447
28.3
Goldman Sachs Small Cap Equity Insights Fund
Fund S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
5,283
28.4
Goldman Sachs Small Cap Growth Insights Fund
Fund S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
5,151
29
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
354,531
29.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
171,709
29.2
Schwab Small-Cap Index Fund
Fund S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
84,560
29.3
Schwab Small-Cap Equity Fund
Fund S000005516 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
60,354
29.4
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
22,775
29.5
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
21,098
30
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
311,009
31
CONGRESS ASSET MANAGEMENT CO
13F CIK 897378 · Registered investment adviser · Sep 30, 2026
304,378
32
AQR CAPITAL MANAGEMENT LLC
13F CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
295,923
33
WASATCH ADVISORS LP
13F CIK 814133 · Registered investment adviser · Sep 30, 2026
288,035
33.1
Wasatch Micro Cap Fund
Fund S000000885 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
240,630
34
CAPTRUST FINANCIAL ADVISORS
13F CIK 1512024 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
278,678
35
FEDERATED HERMES, INC.
13F CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
277,694
36
PRUDENTIAL FINANCIAL INC
13F CIK 1137774 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
274,820
37
LOS ANGELES CAPITAL MANAGEMENT LLC
13F CIK 1177206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
274,050
38
Granite Investment Partners, LLC
13F CIK 1542266 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
266,069
39
Visionary Wealth Advisors
13F CIK 1802984 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
262,368
40
Trexquant Investment LP
13F CIK 1633445 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
261,334
41
Russell Investments Group, Ltd.
13F CIK 1692234 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
256,442
41.1
U.S. Small Cap Equity Fund
Fund S000001586 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
68,998
41.2
U.S. Small Cap Equity Fund
Fund S000006864 · Registered fund · Jun 30, 2026
RUSSELL INVESTMENT FUNDS, not summed
17,993
41.3
Russell Investments U.S. Small Cap Equity ETF
Fund S000089990 · Registered fund · Jun 30, 2026
Russell Investments Exchange Traded Funds, not summed
4,016
42
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
255,569
42.1
Nuveen Quant Small/Mid Cap Equity Fund
Fund S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
85,480
42.2
College Retirement Equities Fund - Total Global Stock Account
Fund S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
69,272
42.3
Nuveen Small Cap Blend Index Fund
Fund S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
46,072
42.4
Nuveen Equity Index Fund
Fund S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
28,519
42.5
TIAA Separate Account VA-1 - Stock Index Account
Fund S000005098 · Registered fund · Jun 30, 2026
TIAA Separate Account VA-1, not summed
856
43
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
254,169
44
PRINCIPAL FINANCIAL GROUP INC
13F CIK 1126328 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
230,017
44.1
Principal U.S. Small-Cap ETF
Fund S000055159 · Registered fund · Jun 30, 2026
Principal Exchange-Traded Funds, not summed
54,811
44.2
SmallCap S&P 600 Index Fund
Fund S000007203 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
26,321
44.3
SmallCap Growth Fund I
Fund S000007175 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
3,041
45
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F CIK 1535845 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
224,298
46
CRAWFORD INVESTMENT COUNSEL INC
13F CIK 837592 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
223,794
46.1
CRAWFORD SMALL CAP DIVIDEND FUND
Fund S000038330 · Registered fund · Jun 30, 2026
Unified Series Trust, not summed
155,444
47
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
214,871
48
HRT FINANCIAL LP
13F CIK 1475597 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
202,166
49
JACOBS LEVY EQUITY MANAGEMENT, INC
13F CIK 884414 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
201,670
50
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
13F CIK 861177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
196,242
50.1
PACE Small/Medium Co Growth Equity Investments
Fund S000002974 · Registered fund · Jul 31, 2026
PACE SELECT ADVISORS TRUST, not summed
6,868

30 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 392 holders

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Key facts CIK 69633 CUSIP 630402105 13F (30d) 28 filings 27 filers Visit website Investor relations