NSSC — NAPCO SECURITY TECHNOLOGIES, INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Dividends
Measured signals that fired on NSSC
| date | signal | measured base rate |
|---|---|---|
| 2026-08-06 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-05 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-08-04 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-10 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-15 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-05-19 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 10.0K | 22.93 | 229.3K |
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 8.0K | 15.27 | 122.2K |
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 4.0K | 26.94 | 107.8K |
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 7.5K | 11.68 | 87.6K |
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 8.0K | 8.10 | 64.8K |
| 2026-05-18 | Soloway Donna Anne Director | Option exercise | 3.6K | 4.35 | 15.7K |
| 2026-03-17 | Spinelli Stephen M Senior Vice President of Sales | Shares withheld for tax | 3.2K | 43.59 | 140.0K |
| 2026-03-17 | Spinelli Stephen M Senior Vice President of Sales | Option exercise | 14.0K | 10.02 | 140.0K |
| 2026-03-03 | SOLOWAY RICHARD CEO, Chairman of Board, Secy | Open-market sale | 55.3K | 43.22 | 2.4M |
| 2026-03-02 | SOLOWAY RICHARD CEO, Chairman of Board, Secy | Open-market sale | 129.7K | 44.99 | 5.8M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 223.8M | 5.7M |
| Copeland Capital Management, LLC | 79.1M | 2.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | 59.3M | 1.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 57.7M | 1.5M |
| STATE STREET CORP | 56.5M | 1.4M |
| JANUS HENDERSON GROUP PLC | 56.1M | 1.4M |
| GEODE CAPITAL MANAGEMENT, LLC | 43.7M | 1.1M |
| WELLINGTON MANAGEMENT GROUP LLP | 36.6M | 929.6K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 33.3M | 846.0K |
| PRUDENTIAL FINANCIAL INC | 29.5M | 750.0K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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