ProPhase Labs - 32 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 January 14, 2026 is 0.18.
  • The all-time high ProPhase Labs stock closing price was 147.00 on July 11, 2022.
  • The ProPhase Labs 52-week high stock price is 7.80, which is 4233.3% above the current share price.
  • The ProPhase Labs 52-week low stock price is 0.17, which is 5.6% below the current share price.
  • The average ProPhase Labs stock price for the last 52 weeks is 3.38.
ProPhase Labs Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 0.2298 0.3626 0.3626 0.1808 0.1808 -59.60%
2025 3.6405 8.8000 8.8000 0.4475 0.4475 -94.09%
2024 36.0707 46.4000 73.5000 6.1050 7.5710 -83.25%
2023 66.4136 95.7000 97.8000 42.3000 45.2000 -53.06%
2022 94.2133 68.2266 147.0000 59.8040 96.3000 45.87%
2021 61.4464 92.8261 140.3800 40.4469 66.0168 -18.04%
2020 31.2753 17.4597 98.7045 1.4213 80.5429 365.99%
2019 18.4403 23.4104 26.2557 1.4154 17.2843 -23.82%
2018 17.9234 9.4815 23.5545 9.4815 22.6901 147.03%
2017 8.8561 8.5926 9.7355 7.9154 9.1852 8.50%
2016 6.7529 5.8836 9.1424 4.9101 8.4656 33.33%
2015 6.0953 6.0106 7.2381 5.0794 6.3492 2.74%
2014 7.0583 7.0265 9.5238 5.2910 6.1799 -9.32%
2013 7.0543 5.9259 9.5238 5.9259 6.8148 18.38%
2012 5.0489 5.1640 7.1111 2.7598 5.7566 18.26%
2011 4.4491 5.1217 6.8995 3.1746 4.8677 -4.17%
2010 6.5899 8.4656 9.5238 3.3862 5.0794 -38.78%
2009 15.1251 17.5662 28.2328 6.3492 8.2963 -51.00%
2008 20.6735 22.0953 24.7619 13.1217 16.9317 -16.14%
2007 23.1636 24.0847 33.2276 12.7831 20.1905 -16.17%
2006 39.4176 59.1323 66.6244 23.7461 24.0847 -58.83%
2005 39.7222 35.5133 67.5556 31.6614 58.4974 63.98%
2004 36.9435 43.5668 45.5509 30.6487 35.6741 -20.58%
2003 32.0089 24.1053 47.0707 21.3612 44.9177 93.45%
2002 22.2093 12.7070 35.3769 11.9471 23.2187 139.13%
2001 5.0574 3.6939 9.7097 3.4300 9.7097 183.08%
2000 6.4481 6.4643 12.6648 2.9023 3.4300 -49.02%
1999 18.4469 24.2741 25.3295 6.5962 6.7282 -71.19%
1998 38.7188 61.4769 67.8093 20.8441 23.3507 -61.69%
1997 57.0271 38.1209 93.6665 32.5854 60.9492 65.59%
1996 9.3970 3.1662 44.0628 1.3192 36.8070 1145.54%
1995 1.6201 0.2963 4.6174 0.1325 2.9551 772.74%
Sector Industry Market Cap Revenue
Medical Medical - Drug Manufacturing $0.001B $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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