Who owns Napco Security Technologies, Inc.?
Institutional ownership of NSSC from SEC Form 13F filings across 173 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
173
13F holders
$956.2M
value, 2026 filers
72.9%
of shares outstanding (26.1M sh)
19
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of NSSC's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 5.6M | $213.9M | 0.0% | 15.8% | -0.9% |
| 2 | Jupiter Topco LLCNEW | 1.7M | $63.9M | 0.0% | 4.7% | new |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $58.0M | 0.0% | 4.3% | -49.3% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5M | $56.8M | 0.0% | 4.2% | +2.1% |
| 5 | FIRST TRUST ADVISORS LP | 1.3M | $49.5M | 0.0% | 3.7% | +90.3% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $45.5M | 0.0% | 3.4% | +8.0% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | 1.1M | $41.9M | 0.0% | 3.1% | +18.6% |
| 8 | MORGAN STANLEY | 959,777 | $36.5M | 0.0% | 2.7% | +106.5% |
| 9 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 697,937 | $26.5M | 0.0% | 2% | -17.5% |
| 10 | NORTHERN TRUST CORP | 610,616 | $23.2M | 0.0% | 1.7% | +4.5% |
| 11 | BESSEMER GROUP INC | 430,452 | $16,350 | 0.0% | 1.2% | +47.0% |
| 12 | ROYAL BANK OF CANADA | 406,408 | $15.4M | 0.0% | 1.1% | -14.7% |
| 13 | Point72 Asset Management, L.P. | 379,686 | $14.4M | 0.0% | 1.1% | -21.3% |
| 14 | ENVESTNET ASSET MANAGEMENT INC | 378,803 | $14.4M | 0.0% | 1.1% | +0.8% |
| 15 | GOLDMAN SACHS GROUP INC | 369,290 | $14.0M | 0.0% | 1% | -8.4% |
| 16 | Sixth Street Partners Management Company, L.P.NEW | 354,531 | $13.5M | 2.3% | 1% | new |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 354,531 | $13.5M | 0.0% | 1% | +4.7% |
| 18 | Bank of New York Mellon Corp | 311,009 | $11.8M | 0.0% | 0.9% | +2.7% |
| 19 | Public Sector Pension Investment Board | 306,478 | $11.6M | 0.0% | 0.9% | +140.3% |
| 20 | CAPTRUST FINANCIAL ADVISORS | 278,678 | $10.6M | 0.0% | 0.8% | +1.6% |
| 21 | FEDERATED HERMES, INC. | 277,694 | $10.5M | 0.0% | 0.8% | +3.0% |
| 22 | PRUDENTIAL FINANCIAL INC | 274,820 | $10.4M | 0.0% | 0.8% | -63.4% |
| 23 | LOS ANGELES CAPITAL MANAGEMENT LLC | 274,050 | $10.4M | 0.0% | 0.8% | +125.6% |
| 24 | Russell Investments Group, Ltd. | 256,442 | $9.7M | 0.0% | 0.7% | +20.0% |
| 25 | Nuveen, LLC | 255,569 | $9.7M | 0.0% | 0.7% | +28.3% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.