Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in NSSC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 5.7M | $223.8M | +76.2% | 15.931% | 0.00% |
| 2 | Copeland Capital Management, LLC | 2.0M | $79.1M | +41.4% | 5.633% | 1.76% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $59.3M | — | 4.220% | 0.00% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5M | $57.7M | — | 4.106% | 0.00% |
| 5 | STATE STREET CORP | 1.4M | $56.5M | +59.7% | 4.014% | 0.00% |
| 6 | JANUS HENDERSON GROUP PLC | 1.4M | $56.1M | -9.2% | 3.995% | 0.03% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $43.7M | +7.7% | 3.107% | 0.00% |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | 930K | $36.6M | +5.7% | 2.607% | 0.01% |
| 9 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 846K | $33.3M | -2.1% | 2.372% | 0.02% |
| 10 | PRUDENTIAL FINANCIAL INC | 750K | $29.5M | — | 2.103% | 0.04% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 703K | $27.7M | +4.7% | 1.971% | 0.01% |
| 12 | FIRST TRUST ADVISORS LP | 685K | $27.0M | -4.1% | 1.921% | 0.02% |
| 13 | Doma Perpetual Capital Management LLC | 628K | $24.7M | 0.0% | 1.761% | 6.64% |
| 14 | NORTHERN TRUST CORP | 584K | $23.0M | -2.3% | 1.638% | 0.00% |
| 15 | Point72 Asset Management, L.P. | 482K | $19.0M | +87.0% | 1.352% | 0.03% |
| 16 | ROYAL BANK OF CANADA | 477K | $18.8M | -17.9% | 1.336% | 0.00% |
| 17 | MORGAN STANLEY | 465K | $18.3M | +9.8% | 1.303% | 0.00% |
| 18 | RENAISSANCE TECHNOLOGIES LLC | 437K | $17.2M | +31.1% | 1.225% | 0.03% |
| 19 | JACOBS LEVY EQUITY MANAGEMENT, INC | 413K | $16.3M | -0.5% | 1.157% | 0.07% |
| 20 | GOLDMAN SACHS GROUP INC | 403K | $15.9M | +30.0% | 1.131% | 0.00% |
| 21 | Fundsmith LLP | 384K | $15.1M | -78.5% | 1.076% | 0.12% |
| 22 | ENVESTNET ASSET MANAGEMENT INC | 376K | $14.8M | +2.7% | 1.053% | 0.00% |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 339K | $13.3M | +7.5% | 0.949% | 0.00% |
| 24 | Bank of New York Mellon Corp | 303K | $11.9M | +40.3% | 0.850% | 0.00% |
| 25 | AQR CAPITAL MANAGEMENT LLC | 285K | $11.2M | -4.0% | 0.799% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in NSSC — a direct measure of their conviction.
Filings activity in NSSC during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 266 | +6.4% | 99.42% | +2.50 pp | $1.32B | +2.6% |
| Q4 2025 | 250 | +5.5% | 96.92% | 3.47 pp | $1.29B | 3.5% |
| Q3 2025 | 237 | +7.7% | 100.39% | +30.73 pp | $1.33B | +44% |
| Q2 2025 | 220 | 1.8% | 69.66% | +17.44 pp | $925M | +33% |
| Q1 2025 | 224 | 9.7% | 52.22% | 35.22 pp | $693M | 40% |
| Q4 2024 | 248 | 3.5% | 87.44% | 10.73 pp | $1.16B | 11% |
| Q3 2024 | 257 | 3.7% | 98.17% | 12.74 pp | $1.30B | 11% |
| Q2 2024 | 267 | — | 110.91% | — | $1.47B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying NSSC stock.
Based on Q1 2026 13F filings, institutional ownership of Napco Security Technologies, Inc. stands at 99.4%, held across 266 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of NSSC, with approximately 5,681,770 shares worth $0.22B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of NSSC, including Point72 Asset Management, L.P., RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for NSSC is 68 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
52 institutions opened new positions in NSSC during Q1 2026, while 36 fully exited. 75 added to existing positions and 138 trimmed.
NSSC institutional ownership rose by 2.50 percentage points quarter-over-quarter, with a net change of +16 holders.
The top 10 institutions account for 51.2% of all reported 13F value in NSSC, and the top 25 account for 72.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Napco Security Technologies, Inc. (NSSC) Institutional Ownership