NSSC
Napco Security Technologies, Inc. · Industrials · Security & Protection Services
Momentum inputs (comparable managers):
holder breadth +18.8% ·
share flow +4.5% ·
net new positions +15.8%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 88 | -5 | 23.42M | $889.65M | +4 | −10 |
| Q1 2026 | 97 | -3 | 24.10M | $949.24M | +6 | −10 |
| Q4 2025 | 101 | +1 | 21.74M | $906.70M | +2 | n/a |
| Q3 2025 | 21 | 0 | 12.44M | $534.26M | +1 | −2 |
| Q2 2025 | 19 | +3 | 11.23M | $333.42M | +3 | n/a |
| Q1 2025 | 13 | 0 | 4.45M | $102.54M | +1 | −1 |
| Q4 2024 | 13 | +1 | 4.35M | $154.82M | +1 | n/a |
| Q3 2024 | 11 | -1 | 2.29M | $92.84M | +2 | −3 |
| Q2 2024 | 12 | n/a | 2.35M | $121.89M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.00M | n/a | $89.03M | 0.0% | n/c | 1 | SEC ↗ ×14 |
| 2 | The Vanguard Group ✦ (passive) | 2.86M | n/a | $84.90M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | Wellington Management ✦ | 1.04M | +60.0% | $30.85M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 4 | Geode Capital Management ✦ (passive) | 1.03M | +1.4% | $30.63M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 5 | State Street Global Advisors ✦ (passive) | 813.66K | -0.1% | $24.27M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 6 | Fidelity (FMR) ✦ | 431.25K | n/a | $12.80M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 7 | Millennium Management ✦ | 325.41K | -57.7% | $9.66M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 8 | AQR Capital Management ✦ | 307.88K | +7.6% | $9.14M | 0.0% | ▲ Add | 5 | SEC ↗ ×5 |
| 9 | Renaissance Technologies ✦ | 298.80K | +18.1% | $8.87M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | Norges Bank ✦ (passive) | 200.84K | +775.7% | $5.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | GAMCO Investors ✦ | 198.00K | -2.5% | $5.88M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 186.82K | New | $5.55M | 0.0% | New | 1 | SEC ↗ |
| 13 | Marshall Wace ✦ | 166.51K | +383.6% | $4.94M | 0.0% | ▲ Add | 5 | SEC ↗ ×3 |
| 14 | Citadel Advisors ✦ | 112.74K | +117.0% | $3.35M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 15 | Arrowstreet Capital ✦ | 112.08K | New | $3.33M | 0.0% | New | 1 | SEC ↗ |
| 16 | Point72 Asset Management ✦ | 78.69K | -74.1% | $2.34M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 17 | Gotham Asset Management ✦ | 27.54K | +17.6% | $817,574 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | T. Rowe Price ✦ | 23.15K | +11.0% | $688,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | Two Sigma Investments ✦ | 14.03K | New | $416,580 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $5.55M | 0.0% |
| Arrowstreet Capital | $3.33M | 0.0% |
| Two Sigma Investments | $416,580 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 269 holders, 34.55M shares, $1.32B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 379.53K sh · $13.09M
Director · 20.96K sh · $725,704
Officer, Director · 95.47K sh · $3.43M
Director · 28.00K sh · $1.01M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology