6 institutions reported holding $12.4M of Napco Security Technologies Inc (NSSC) in SEC 13F filings for 2026-06-30. Largest institutional holders: CONGRESS ASSET MANAGEMENT CO ($10.8M), Hennion & Walsh Asset Management, Inc. ($1.5M), Versant Capital Management, Inc ($42,955), GAMMA Investing LLC ($36,423), MassMutual Private Wealth & Trust, FSB ($2,089). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CONGRESS ASSET MANAGEMENT CO | $10.8M | 285,462 | Added |
| 2 | Hennion & Walsh Asset Management, Inc. | $1.5M | 39,026 | Added |
| 3 | Versant Capital Management, Inc | $42,955 | 1,131 | Trimmed |
| 4 | GAMMA Investing LLC | $36,423 | 959 | Trimmed |
| 5 | MassMutual Private Wealth & Trust, FSB | $2,089 | 55 | New |
| 6 | CoreCap Advisors, LLC | $1,595 | 42 | New |
Source: SEC Form 13F filings · as of 2026-06-30