Research Frontiers Stock Price History
NASDAQ: REFRMiscellaneousMulti-Sector CompaniesUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
REFR price history at a glance
The price history for Research Frontiers (REFR) on this page begins on July 7, 1986, when the stock closed at $5.47; it most recently closed at $0.5933 on October 5, 2026. The highest price in this record is $40.00, reached on February 14, 2000; the latest close is 98.5% below that peak. Across the 39 complete calendar years in the table, REFR finished higher in 21 and lower in 18. Its best year was 1991 (+229.4%) and its worst was 2008 (-74.7%).
Over roughly 40 years the share price changed -89.1%, a -5.4% compound annual price return (excluding dividends). In the last 12 months alone, REFR has lost 68.6%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 1986
- $40.00
- Date of high
- Feb 14, 2000
- Low since 1986
- $0.34
- Date of low
- Sep 14, 2026
- 52-week high
- $2.70
- 52-week low
- $0.34
- Last close
- $0.5933
REFR returns
1 week
-18.73%
1 month
+52.13%
3 months
+7.87%
6 months
-38.20%
Year to date
-54.71%
1 year
-68.61%
3 years
-48.41%
5 years
-74.32%
REFR price return, excluding dividends.
REFR annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 0.5933 | -53.65% |
| 2025 | 1.28 | -22.89% |
| 2024 | 1.66 | +64.36% |
| 2023 | 1.01 | -47.12% |
| 2022 | 1.91 | +11.05% |
| 2021 | 1.72 | -38.79% |
| 2020 | 2.81 | -8.77% |
| 2019 | 3.08 | +65.59% |
| 2018 | 1.86 | +78.85% |
| 2017 | 1.04 | -42.86% |
| 2016 | 1.82 | -65.07% |
| 2015 | 5.21 | +1.56% |
| 2014 | 5.13 | -18.44% |
| 2013 | 6.29 | +59.24% |
| 2012 | 3.95 | +16.52% |
| 2011 | 3.39 | -35.92% |
| 2010 | 5.29 | +39.58% |
| 2009 | 3.79 | +63.36% |
| 2008 | 2.32 | -74.73% |
| 2007 | 9.18 | +67.52% |
| 2006 | 5.48 | +6.00% |
| 2005 | 5.17 | -18.97% |
| 2004 | 6.38 | -31.98% |
| 2003 | 9.38 | +2.51% |
| 2002 | 9.15 | -50.83% |
| 2001 | 18.61 | +6.34% |
| 2000 | 17.50 | +18.14% |
| 1999 | 14.81 | +41.07% |
| 1998 | 10.50 | +35.48% |
| 1997 | 7.75 | +3.33% |
| 1996 | 7.50 | -25.00% |
| 1995 | 10.00 | +60.00% |
| 1994 | 6.25 | -35.57% |
| 1993 | 9.70 | +159.82% |
| 1992 | 3.73 | 0.00% |
| 1991 | 3.73 | +229.42% |
| 1990 | 1.13 | -37.04% |
| 1989 | 1.80 | -28.95% |
| 1988 | 2.53 | +111.11% |
| 1987 | 1.20 | -70.00% |
| 1986* | 4.00 | -26.83% |
* Partial year: the record begins after the start of 1986; return measured from the first available close.
2026 return is year to date.
REFR daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 0.607 | 0.6156 | 0.5598 | 0.5933 | -4.68% | |
| 0.676 | 0.676 | 0.5901 | 0.6224 | -8.95% | |
| 0.68 | 0.6998 | 0.6797 | 0.6836 | -5.06% | |
| 0.77 | 0.77 | 0.70 | 0.72 | -1.37% | |
| 0.73 | 0.75 | 0.67 | 0.73 | 0.00% | |
| 0.69 | 0.73 | 0.68 | 0.73 | +5.80% | |
| 0.71 | 0.73 | 0.66 | 0.69 | -5.48% | |
| 0.69 | 0.73 | 0.67 | 0.73 | +4.29% | |
| 0.74 | 0.77 | 0.67 | 0.70 | -9.09% | |
| 0.79 | 0.79 | 0.71 | 0.77 | -2.53% | |
| 0.71 | 0.85 | 0.68 | 0.79 | +6.76% | |
| 0.71 | 0.81 | 0.65 | 0.74 | +4.23% | |
| 0.76 | 0.76 | 0.66 | 0.71 | -8.97% | |
| 0.74 | 0.81 | 0.61 | 0.78 | +2.63% | |
| 0.48 | 0.78 | 0.46 | 0.76 | +16.92% | |
| 0.39 | 0.94 | 0.36 | 0.65 | +66.67% | |
| 0.39 | 0.41 | 0.37 | 0.39 | +2.63% | |
| 0.37 | 0.41 | 0.34 | 0.38 | +5.56% | |
| 0.37 | 0.39 | 0.35 | 0.36 | -5.26% | |
| 0.38 | 0.42 | 0.37 | 0.38 | -2.56% | |
| 0.38 | 0.42 | 0.37 | 0.39 | 0.00% | |
| 0.40 | 0.40 | 0.39 | 0.39 | 0.00% | |
| 0.39 | 0.40 | 0.38 | 0.39 | 0.00% | |
| 0.41 | 0.42 | 0.37 | 0.39 | -4.88% | |
| 0.41 | 0.43 | 0.40 | 0.41 | 0.00% | |
| 0.40 | 0.43 | 0.40 | 0.41 | +2.50% | |
| 0.45 | 0.46 | 0.40 | 0.40 | -9.09% | |
| 0.47 | 0.47 | 0.43 | 0.44 | -6.38% | |
| 0.47 | 0.47 | 0.45 | 0.47 | +2.17% | |
| 0.49 | 0.49 | 0.45 | 0.46 | -6.12% | |
| 0.51 | 0.53 | 0.47 | 0.49 | +2.08% | |
| 0.48 | 0.50 | 0.46 | 0.48 | 0.00% | |
| 0.49 | 0.51 | 0.46 | 0.48 | +2.13% | |
| 0.44 | 0.49 | 0.43 | 0.47 | +4.44% | |
| 0.46 | 0.47 | 0.43 | 0.45 | 0.00% | |
| 0.46 | 0.49 | 0.44 | 0.45 | +2.27% | |
| 0.42 | 0.46 | 0.40 | 0.44 | +4.76% | |
| 0.44 | 0.47 | 0.42 | 0.42 | -2.33% | |
| 0.43 | 0.48 | 0.42 | 0.43 | -2.27% | |
| 0.45 | 0.45 | 0.43 | 0.44 | +2.33% | |
| 0.48 | 0.48 | 0.43 | 0.43 | -10.42% | |
| 0.49 | 0.49 | 0.47 | 0.48 | -2.04% | |
| 0.50 | 0.51 | 0.49 | 0.49 | 0.00% | |
| 0.49 | 0.50 | 0.47 | 0.49 | 0.00% | |
| 0.50 | 0.50 | 0.45 | 0.49 | +4.26% | |
| 0.46 | 0.50 | 0.45 | 0.47 | 0.00% | |
| 0.47 | 0.49 | 0.45 | 0.47 | 0.00% | |
| 0.47 | 0.49 | 0.46 | 0.47 | +4.44% | |
| 0.41 | 0.53 | 0.41 | 0.45 | +12.50% | |
| 0.39 | 0.45 | 0.38 | 0.40 | +2.56% | |
| 0.36 | 0.42 | 0.36 | 0.39 | 0.00% | |
| 0.44 | 0.46 | 0.35 | 0.39 | -11.36% | |
| 0.46 | 0.48 | 0.41 | 0.44 | -4.35% | |
| 0.49 | 0.49 | 0.45 | 0.46 | 0.00% | |
| 0.48 | 0.50 | 0.46 | 0.46 | -4.17% | |
| 0.48 | 0.54 | 0.45 | 0.48 | -2.04% | |
| 0.51 | 0.52 | 0.48 | 0.49 | -3.92% | |
| 0.58 | 0.58 | 0.51 | 0.51 | 0.00% | |
| 0.56 | 0.56 | 0.46 | 0.51 | -7.27% | |
| 0.54 | 0.55 | 0.48 | 0.55 | +3.77% | |
| 0.53 | 0.60 | 0.53 | 0.53 | -3.64% | |
| 0.54 | 0.58 | 0.54 | 0.55 | 0.00% | |
| 0.56 | 0.60 | 0.54 | 0.55 | +1.85% | |
| 0.53 | 0.59 | 0.53 | 0.54 | -1.82% | |
| 0.55 | 0.59 | 0.53 | 0.55 | +3.77% | |
| 0.53 | 0.53 | 0.50 | 0.53 | -1.85% | |
| 0.53 | 0.55 | 0.53 | 0.54 | 0.00% | |
| 0.55 | 0.56 | 0.53 | 0.54 | 0.00% | |
| 0.57 | 0.57 | 0.52 | 0.54 | -1.82% | |
| 0.58 | 0.58 | 0.50 | 0.55 | +3.77% | |
| 0.52 | 0.59 | 0.50 | 0.53 | +1.92% | |
| 0.55 | 0.59 | 0.52 | 0.52 | -5.45% | |
| 0.54 | 0.55 | 0.51 | 0.55 | +14.58% | |
| 0.59 | 0.59 | 0.48 | 0.48 | -22.58% | |
| 0.60 | 0.65 | 0.55 | 0.62 | 0.00% | |
| 0.65 | 0.65 | 0.59 | 0.62 | +1.64% | |
| 0.62 | 0.63 | 0.61 | 0.61 | 0.00% | |
| 0.60 | 0.63 | 0.60 | 0.61 | +1.67% | |
| 0.64 | 0.66 | 0.60 | 0.60 | -6.25% | |
| 0.68 | 0.70 | 0.64 | 0.64 | -4.48% | |
| 0.64 | 0.71 | 0.63 | 0.67 | +3.08% | |
| 0.70 | 0.75 | 0.65 | 0.65 | -8.45% | |
| 0.75 | 0.75 | 0.71 | 0.71 | -4.05% | |
| 0.75 | 0.75 | 0.72 | 0.74 | +1.37% | |
| 0.75 | 0.78 | 0.73 | 0.73 | 0.00% | |
| 0.73 | 0.81 | 0.73 | 0.73 | 0.00% | |
| 0.74 | 0.76 | 0.72 | 0.73 | -1.35% | |
| 0.75 | 0.77 | 0.72 | 0.74 | -1.33% | |
| 0.77 | 0.78 | 0.75 | 0.75 | -1.32% | |
| 0.75 | 0.79 | 0.75 | 0.76 | 0.00% | |
| 0.75 | 0.79 | 0.75 | 0.76 | -1.30% | |
| 0.82 | 0.82 | 0.75 | 0.77 | 0.00% | |
| 0.77 | 0.77 | 0.76 | 0.77 | +1.32% | |
| 0.75 | 0.77 | 0.74 | 0.76 | +1.33% | |
| 0.75 | 0.75 | 0.74 | 0.75 | -1.32% | |
| 0.74 | 0.79 | 0.73 | 0.76 | +1.33% | |
| 0.76 | 0.76 | 0.74 | 0.75 | +1.35% | |
| 0.77 | 0.79 | 0.73 | 0.74 | -1.33% | |
| 0.77 | 0.80 | 0.73 | 0.75 | -2.60% | |
| 0.82 | 0.82 | 0.76 | 0.77 | -2.53% | |
| 0.79 | 0.80 | 0.78 | 0.79 | -1.25% | |
| 0.81 | 0.81 | 0.78 | 0.80 | -1.23% | |
| 0.78 | 0.83 | 0.78 | 0.81 | +2.53% | |
| 0.81 | 0.86 | 0.79 | 0.79 | +1.28% | |
| 0.79 | 0.79 | 0.76 | 0.78 | +2.63% | |
| 0.90 | 0.90 | 0.76 | 0.76 | +1.33% | |
| 0.89 | 0.89 | 0.75 | 0.75 | -9.64% | |
| 0.87 | 0.99 | 0.83 | 0.83 | -5.68% | |
| 0.99 | 0.99 | 0.88 | 0.88 | +1.15% | |
| 0.87 | 0.95 | 0.86 | 0.87 | 0.00% | |
| 0.88 | 0.94 | 0.83 | 0.87 | -1.14% | |
| 0.92 | 0.92 | 0.87 | 0.88 | -4.35% | |
| 0.95 | 0.96 | 0.91 | 0.92 | -2.13% | |
| 0.93 | 0.95 | 0.93 | 0.94 | 0.00% | |
| 0.93 | 0.98 | 0.93 | 0.94 | -1.05% | |
| 0.99 | 0.99 | 0.94 | 0.95 | -1.04% | |
| 1.01 | 1.02 | 0.93 | 0.96 | -4.00% | |
| 0.99 | 1.02 | 0.99 | 1.00 | +3.09% | |
| 0.97 | 1.02 | 0.97 | 0.97 | -2.02% | |
| 1.00 | 1.02 | 0.98 | 0.99 | -1.00% | |
| 0.93 | 1.00 | 0.93 | 1.00 | +7.53% | |
| 0.95 | 0.95 | 0.93 | 0.93 | -1.06% | |
| 0.91 | 0.95 | 0.91 | 0.94 | +3.30% | |
| 1.01 | 1.01 | 0.91 | 0.91 | -10.78% | |
| 0.91 | 1.02 | 0.91 | 1.02 | +9.68% | |
| 0.95 | 0.97 | 0.92 | 0.93 | -3.12% | |
| 0.97 | 0.97 | 0.96 | 0.96 | +2.13% | |
| 0.93 | 0.97 | 0.91 | 0.94 | +2.17% | |
| 0.98 | 0.98 | 0.92 | 0.92 | -1.08% | |
| 0.92 | 0.97 | 0.91 | 0.93 | -1.06% | |
| 0.93 | 0.97 | 0.90 | 0.94 | +1.08% | |
| 0.93 | 0.93 | 0.90 | 0.93 | -2.11% | |
| 0.94 | 0.97 | 0.94 | 0.95 | +3.26% | |
| 0.87 | 0.96 | 0.87 | 0.92 | +1.10% | |
| 0.89 | 0.94 | 0.88 | 0.91 | +2.25% | |
| 0.87 | 0.94 | 0.87 | 0.89 | -1.11% | |
| 0.86 | 0.91 | 0.86 | 0.90 | +8.43% | |
| 0.87 | 0.97 | 0.82 | 0.83 | -2.35% | |
| 0.86 | 0.90 | 0.85 | 0.85 | -1.16% | |
| 0.86 | 0.90 | 0.86 | 0.86 | +7.50% | |
| 1.02 | 1.03 | 0.80 | 0.80 | -21.57% | |
| 1.01 | 1.02 | 1.00 | 1.02 | +2.00% | |
| 1.02 | 1.03 | 1.00 | 1.00 | 0.00% | |
| 1.00 | 1.03 | 1.00 | 1.00 | -0.99% | |
| 1.00 | 1.03 | 1.00 | 1.01 | 0.00% | |
| 1.01 | 1.01 | 1.00 | 1.01 | -0.98% | |
| 0.93 | 1.02 | 0.92 | 1.02 | +13.33% | |
| 0.93 | 0.95 | 0.90 | 0.90 | -3.23% | |
| 0.97 | 0.97 | 0.92 | 0.93 | -1.06% | |
| 0.96 | 0.97 | 0.94 | 0.94 | -4.08% | |
| 0.99 | 1.01 | 0.96 | 0.98 | -1.01% | |
| 1.05 | 1.05 | 0.99 | 0.99 | -1.98% | |
| 1.00 | 1.05 | 1.00 | 1.01 | 0.00% | |
| 1.01 | 1.09 | 0.98 | 1.01 | -1.94% | |
| 1.02 | 1.10 | 1.02 | 1.03 | +3.00% | |
| 1.03 | 1.05 | 0.98 | 1.00 | +2.04% | |
| 1.14 | 1.14 | 0.98 | 0.98 | -11.71% | |
| 1.13 | 1.13 | 1.11 | 1.11 | +0.91% | |
| 1.12 | 1.12 | 1.07 | 1.10 | -0.90% | |
| 1.13 | 1.13 | 1.10 | 1.11 | 0.00% | |
| 1.03 | 1.13 | 1.03 | 1.11 | +7.77% | |
| 1.01 | 1.05 | 1.01 | 1.03 | +1.98% | |
| 1.04 | 1.09 | 1.00 | 1.01 | -0.98% | |
| 1.02 | 1.12 | 1.02 | 1.02 | +2.00% | |
| 1.04 | 1.09 | 0.98 | 1.00 | -2.91% | |
| 1.05 | 1.08 | 1.01 | 1.03 | -0.96% | |
| 1.05 | 1.06 | 1.02 | 1.04 | 0.00% | |
| 1.02 | 1.08 | 1.02 | 1.04 | +0.97% | |
| 1.11 | 1.17 | 1.00 | 1.03 | -8.04% | |
| 1.11 | 1.25 | 1.11 | 1.12 | -0.88% | |
| 1.13 | 1.14 | 1.09 | 1.13 | 0.00% | |
| 1.15 | 1.18 | 1.11 | 1.13 | -2.59% | |
| 1.15 | 1.20 | 1.15 | 1.16 | +1.75% | |
| 1.18 | 1.21 | 1.14 | 1.14 | -5.00% | |
| 1.20 | 1.23 | 1.14 | 1.20 | 0.00% | |
| 1.25 | 1.32 | 1.20 | 1.20 | -5.51% | |
| 1.27 | 1.29 | 1.23 | 1.27 | -0.78% | |
| 1.29 | 1.30 | 1.25 | 1.28 | -1.54% | |
| 1.29 | 1.31 | 1.21 | 1.30 | +2.36% | |
| 1.27 | 1.32 | 1.26 | 1.27 | 0.00% | |
| 1.22 | 1.31 | 1.21 | 1.27 | +2.42% | |
| 1.23 | 1.30 | 1.21 | 1.24 | -2.36% | |
| 1.32 | 1.34 | 1.25 | 1.27 | -4.51% | |
| 1.33 | 1.38 | 1.30 | 1.33 | +0.76% | |
| 1.35 | 1.40 | 1.30 | 1.32 | -2.94% | |
| 1.34 | 1.37 | 1.32 | 1.36 | +2.26% | |
| 1.31 | 1.34 | 1.31 | 1.33 | +3.91% | |
| 1.28 | 1.34 | 1.28 | 1.28 | +2.40% | |
| 1.27 | 1.35 | 1.20 | 1.25 | -1.57% | |
| 1.31 | 1.34 | 1.27 | 1.27 | -1.55% | |
| 1.35 | 1.43 | 1.27 | 1.29 | -2.27% | |
| 1.31 | 1.35 | 1.31 | 1.32 | 0.00% | |
| 1.28 | 1.44 | 1.27 | 1.32 | +3.13% | |
| 1.31 | 1.31 | 1.26 | 1.28 | -2.29% | |
| 1.31 | 1.34 | 1.26 | 1.31 | -0.76% | |
| 1.36 | 1.36 | 1.30 | 1.32 | -3.65% | |
| 1.36 | 1.45 | 1.31 | 1.37 | -0.72% | |
| 1.41 | 1.49 | 1.30 | 1.38 | -0.72% | |
| 1.40 | 1.42 | 1.36 | 1.39 | -1.42% | |
| 1.50 | 1.50 | 1.36 | 1.41 | -2.76% | |
| 1.50 | 1.54 | 1.41 | 1.45 | -0.68% | |
| 1.52 | 1.53 | 1.42 | 1.46 | -1.35% | |
| 1.46 | 1.48 | 1.27 | 1.48 | +2.78% | |
| 1.49 | 1.53 | 1.42 | 1.44 | -2.70% | |
| 1.50 | 1.52 | 1.44 | 1.48 | -5.13% | |
| 1.52 | 1.59 | 1.50 | 1.56 | +1.30% | |
| 1.59 | 1.59 | 1.52 | 1.54 | -1.28% | |
| 1.57 | 1.62 | 1.54 | 1.56 | -1.27% | |
| 1.59 | 1.63 | 1.57 | 1.58 | -0.63% | |
| 1.58 | 1.69 | 1.56 | 1.59 | 0.00% | |
| 1.64 | 1.65 | 1.55 | 1.59 | -1.85% | |
| 1.63 | 1.65 | 1.52 | 1.62 | +3.18% | |
| 1.64 | 1.65 | 1.56 | 1.57 | -4.85% | |
| 1.62 | 1.71 | 1.56 | 1.65 | +1.23% | |
| 1.85 | 1.85 | 1.60 | 1.63 | -8.43% | |
| 1.75 | 1.92 | 1.75 | 1.78 | -5.82% | |
| 1.97 | 1.97 | 1.84 | 1.89 | -1.05% | |
| 2.01 | 2.01 | 1.85 | 1.91 | -1.04% | |
| 2.08 | 2.08 | 1.90 | 1.93 | -7.21% | |
| 1.91 | 2.10 | 1.84 | 2.08 | +4.52% | |
| 1.73 | 2.00 | 1.68 | 1.99 | +13.07% | |
| 1.79 | 1.85 | 1.72 | 1.76 | 0.00% | |
| 1.76 | 1.79 | 1.75 | 1.76 | +3.53% | |
| 1.58 | 1.72 | 1.58 | 1.70 | +4.94% | |
| 1.77 | 1.85 | 1.62 | 1.62 | -10.50% | |
| 1.70 | 1.93 | 1.66 | 1.81 | -3.21% | |
| 1.70 | 1.87 | 1.57 | 1.87 | +3.89% | |
| 1.75 | 1.89 | 1.68 | 1.80 | +3.45% | |
| 1.58 | 1.74 | 1.57 | 1.74 | +10.83% | |
| 1.58 | 1.62 | 1.53 | 1.57 | -0.63% | |
| 1.65 | 1.65 | 1.54 | 1.58 | -1.25% | |
| 1.69 | 1.89 | 1.60 | 1.60 | -6.43% | |
| 1.80 | 1.84 | 1.71 | 1.71 | -2.29% | |
| 1.83 | 1.89 | 1.75 | 1.75 | -6.91% | |
| 1.95 | 1.99 | 1.86 | 1.88 | -3.09% | |
| 1.90 | 2.00 | 1.78 | 1.94 | +5.43% | |
| 2.02 | 2.14 | 1.60 | 1.84 | -9.36% | |
| 2.02 | 2.18 | 1.97 | 2.03 | +0.50% | |
| 2.30 | 2.45 | 2.00 | 2.02 | -14.41% | |
| 2.00 | 2.70 | 1.98 | 2.36 | +18.00% | |
| 1.69 | 2.00 | 1.63 | 2.00 | +21.95% | |
| 1.62 | 1.70 | 1.62 | 1.64 | -0.61% | |
| 1.64 | 1.71 | 1.60 | 1.65 | -2.37% | |
| 1.68 | 1.74 | 1.68 | 1.69 | -2.31% | |
| 1.65 | 1.75 | 1.65 | 1.73 | +5.49% | |
| 1.72 | 1.80 | 1.60 | 1.64 | +1.23% | |
| 1.81 | 1.81 | 1.61 | 1.62 | -8.99% | |
| 1.78 | 1.95 | 1.77 | 1.78 | -1.66% | |
| 1.80 | 1.98 | 1.80 | 1.81 | -0.55% | |
| 1.78 | 1.86 | 1.72 | 1.82 | 0.00% | |
| 1.87 | 1.94 | 1.75 | 1.82 | -3.70% | |
| 1.88 | 1.92 | 1.81 | 1.89 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the REFR chart for longer ranges.