NAPCO Security Technologies - 44 Year Stock Price History | NSSC

Historical daily share price chart and data for NAPCO Security Technologies since 1981 adjusted for splits and dividends. The latest closing stock price for NAPCO Security Technologies as of November 07, 2025 is 42.14.
  • The all-time high NAPCO Security Technologies stock closing price was 56.86 on August 19, 2024.
  • The NAPCO Security Technologies 52-week high stock price is 48.12, which is 14.2% above the current share price.
  • The NAPCO Security Technologies 52-week low stock price is 19.00, which is 54.9% below the current share price.
  • The average NAPCO Security Technologies stock price for the last 52 weeks is 32.31.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
NAPCO Security Technologies Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 31.2524 34.5301 44.3950 19.6568 42.1400 20.08%
2024 42.2832 32.9044 56.8562 31.5867 35.0926 4.97%
2023 29.9860 26.2409 39.0387 17.8837 33.4315 25.59%
2022 22.6237 23.6691 30.0574 15.3048 26.6187 9.96%
2021 18.1775 12.6749 24.9671 12.5538 24.2067 90.62%
2020 11.5743 14.8059 15.8230 6.6305 12.6991 -10.79%
2019 12.4477 7.5168 16.6996 7.0760 14.2344 86.60%
2018 6.3358 4.1894 8.4176 4.1894 7.6282 80.00%
2017 4.5485 4.0926 5.1823 3.6325 4.2379 2.94%
2016 3.2304 2.8575 4.1410 2.5088 4.1168 44.07%
2015 2.7633 2.2763 3.5482 2.2410 2.8575 25.53%
2014 2.6688 2.9786 3.6664 1.9712 2.2763 -25.16%
2013 2.3099 1.7644 3.1433 1.6942 3.0416 72.52%
2012 1.4668 1.2108 1.7726 1.1091 1.7630 46.78%
2011 1.1151 0.8645 1.4530 0.8137 1.2011 40.91%
2010 0.9490 0.9299 1.2157 0.7846 0.8524 5.39%
2009 0.6604 0.5957 0.9880 0.3899 0.8088 30.47%
2008 1.9333 3.0513 3.1239 0.5715 0.6199 -79.52%
2007 2.7946 2.7849 3.3612 2.2376 3.0271 6.48%
2006 4.1294 3.2321 5.6989 2.6057 2.8430 -15.01%
2005 2.5471 2.7551 3.6831 1.8878 3.3451 17.46%
2004 1.4378 0.7767 2.8801 0.6467 2.8479 258.77%
2003 0.7900 0.8951 0.9068 0.6556 0.7938 -4.32%
2002 0.6720 0.5247 0.9059 0.4709 0.8296 67.26%
2001 0.4570 0.3083 0.6009 0.3083 0.4960 55.24%
2000 0.3227 0.2859 0.4036 0.2747 0.3195 11.75%
1999 0.3109 0.3700 0.3924 0.2354 0.2859 -20.32%
1998 0.4409 0.5381 0.5606 0.3588 0.3588 -33.32%
1997 0.4629 0.3377 0.6166 0.3363 0.5381 60.01%
1996 0.3338 0.3251 0.3924 0.2803 0.3363 7.14%
1995 0.2408 0.2354 0.3588 0.1906 0.3139 21.71%
1994 0.3397 0.3924 0.4485 0.2466 0.2579 -36.10%
1993 0.4446 0.2354 0.6054 0.2354 0.4036 71.45%
1992 0.2451 0.2466 0.3027 0.2018 0.2354 16.65%
1991 0.2707 0.2354 0.3476 0.1570 0.2018 -14.27%
1990 0.3450 0.4485 0.5606 0.2018 0.2354 -52.28%
1989 0.7965 1.1211 1.2332 0.4485 0.4933 -56.00%
1988 0.9995 0.7063 1.2332 0.6503 1.1211 75.45%
1987 0.9322 0.8408 1.1211 0.4933 0.6390 -22.97%
1986 0.9607 0.9193 1.2108 0.7624 0.8296 -9.76%
1985 0.7803 0.5082 1.0090 0.5082 0.9193 84.49%
1984 0.6943 0.8100 1.0799 0.4783 0.4983 -38.48%
1983 0.5735 0.2926 0.8325 0.2250 0.8100 176.83%
1982 0.4609 0.9000 0.9001 0.2476 0.2926 -67.49%
Sector Industry Market Cap Revenue
Industrial Products Protection - Safety Equipment & Services $1.503B $0.182B
NAPCO SECURITY SYSTEMS is engaged in the development, manufacture, distribution and sale of security alarm products and door security devices for commercial and residential installations.
Stock Name Country Market Cap PE Ratio
Halma (HLMAF) United Kingdom $17.187B 0.00
Allegion (ALLE) Ireland $14.397B 20.76
Life360 (LIF) United States $7.051B 284.14
ADT (ADT) United States $6.875B 10.09
MSA Safety Incorporporated (MSA) United States $6.224B 20.38
Resideo Technologies (REZI) United States $4.655B 12.79
Brady (BRC) United States $3.549B 16.38
Alarm Holdings (ALRM) United States $2.488B 24.44
Cadre Holdings (CDRE) United States $1.746B 38.34
Digimarc (DMRC) United States $0.180B 0.00
Lakeland Industries (LAKE) United States $0.153B 0.00
ICTS (ICTSF) Netherlands $0.150B 0.00
Eastern (EML) United States $0.119B 13.74
WISeKey Holding (WKEY) Switzerland $0.110B 0.00
Wrap Technologies (WRAP) United States $0.106B 0.00
Senstar Technologies (SNT) Canada $0.104B 20.27
SoundThinking (SSTI) United States $0.102B 0.00
Intellicheck Mobilisa (IDN) United States $0.087B 0.00
Concorde Group (CIGL) Singapore $0.056B 0.00
Mobilicom (MOB) Israel $0.054B 0.00
SuperCom (SPCB) Israel $0.032B 3.97
Rectitude Holdings (RECT) Singapore $0.032B 0.00
Applied DNA Sciences Inc (BNBX) United States $0.015B 0.00
Guardforce AI (GFAI) Singapore $0.015B 0.00
Hub Cyber Security (HUBC) Israel $0.013B 0.00
Cycurion (CYCU) United States $0.007B 0.00
Digital Ally/NV (DGLY) United States $0.003B 0.00
American Rebel Holdings (AREB) United States $0.001B 0.00
Ituran Location And Control (ITRN) Israel $0.000B 13.77