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ProPhase Labs - 31 Year Stock Price History | PRPH

Historical daily share price chart and data for ProPhase Labs since 1994 adjusted for splits and dividends. The latest closing stock price for ProPhase Labs as of July 25, 2025 is 0.47.
  • The all-time high ProPhase Labs stock closing price was 14.70 on July 11, 2022.
  • The ProPhase Labs 52-week high stock price is 3.29, which is 600% above the current share price.
  • The ProPhase Labs 52-week low stock price is 0.22, which is 53.2% below the current share price.
  • The average ProPhase Labs stock price for the last 52 weeks is 1.05.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
  
ProPhase Labs Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 0.3978 0.8800 0.8800 0.2370 0.4661 -38.44%
2024 3.6071 4.6400 7.3500 0.6105 0.7571 -83.25%
2023 6.6414 9.5700 9.7800 4.2300 4.5200 -53.06%
2022 9.4213 6.8227 14.7000 5.9804 9.6300 45.87%
2021 6.1446 9.2826 14.0380 4.0447 6.6017 -18.04%
2020 3.1622 1.7460 9.8705 1.0528 8.0543 366.00%
2019 1.9582 2.3410 2.6256 1.2658 1.7284 -23.83%
2018 1.7923 0.9481 2.3555 0.9481 2.2690 147.03%
2017 0.8856 0.8593 0.9735 0.7915 0.9185 8.49%
2016 0.6753 0.5884 0.9142 0.4910 0.8466 33.34%
2015 0.6095 0.6011 0.7238 0.5079 0.6349 2.73%
2014 0.7058 0.7026 0.9524 0.5291 0.6180 -9.32%
2013 0.7054 0.5926 0.9524 0.5926 0.6815 18.38%
2012 0.5049 0.5164 0.7111 0.2760 0.5757 18.26%
2011 0.4449 0.5122 0.6899 0.3175 0.4868 -4.15%
2010 0.6590 0.8466 0.9524 0.3386 0.5079 -38.78%
2009 1.5125 1.7566 2.8233 0.6349 0.8296 -51.00%
2008 2.0674 2.2095 2.4762 1.3122 1.6932 -16.14%
2007 2.3164 2.4085 3.3228 1.2783 2.0191 -16.17%
2006 3.9418 5.9132 6.6624 2.3746 2.4085 -58.83%
2005 3.9722 3.5513 6.7556 3.1661 5.8497 63.98%
2004 3.7009 4.3683 4.5672 3.0730 3.5674 -20.79%
2003 3.2094 2.4169 4.7196 2.1418 4.5037 93.46%
2002 2.2268 1.2741 3.5471 1.1979 2.3280 139.14%
2001 0.5071 0.3704 0.9735 0.3439 0.9735 183.08%
2000 0.6465 0.6481 1.2698 0.2910 0.3439 -49.02%
1999 1.8496 2.4339 2.5397 0.6614 0.6746 -71.19%
1998 3.8822 6.1640 6.7990 2.0899 2.3413 -61.69%
1997 5.7178 3.8222 9.3915 3.2672 6.1111 65.59%
1996 0.9398 0.0317 4.4180 0.0212 3.6905 12367.91%
1995 0.0314 0.0296 0.0463 0.0132 0.0296 -12.68%
Sector Industry Market Cap Revenue
Medical Medical - Drug Manufacturing $0.018B $0.007B
ProPhase Labs, Inc., formerly known as The Quigley Corporation, is a manufacturer, marketer and distributor of a diversified range of homeopathic and health products that are offered to the general public. The Company's mission is to develop and market natural health care pharmaceuticals and nutriceuticals that offer pioneering new options to improve patient treatment results. Its consumer health products, marketed through ProPhase Labs and certain subsidiaries, include the original COLD-EEZE?, a zinc gluconate glycine product. COLD-EEZE? family of lozenges and sugar free tablets reduce the severity and duration of the common cold. Its customers include wholesalers and distributors, as well as independent and chain food, drug and mass merchandise stores and pharmacies. ProPhase Labs is also engaged in the research and development of potential natural base health products along with supplements and cosmeceuticals for human and veterinary use. The Company is headquartered in Doylestown, Pennsylvania.
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