Cytosorbents Stock Price History
NASDAQ: CTSOHealth CareMedical/Dental InstrumentsUSD
3.79+0.06 (+1.61%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
CTSO price history at a glance
The price history for Cytosorbents (CTSO) on this page begins on August 7, 2006, when the stock closed at $1,800.00; it most recently closed at $3.79 on October 5, 2026. The highest price in this record is $1,975.00, reached on August 7, 2006; the latest close is 99.8% below that peak. Across the 19 complete calendar years in the table, CTSO finished higher in 6 and lower in 13. Its best year was 2014 (+246.5%) and its worst was 2007 (-85.5%).
Over roughly 20 years the share price changed -99.8%, a -26.3% compound annual price return (excluding dividends). In the last 12 months alone, CTSO has lost 79.7%. 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 2006
- $1,975.00
- Date of high
- Aug 7, 2006
- Low since 2006
- $3.59
- Date of low
- Oct 5, 2026
- 52-week high
- $19.72
- 52-week low
- $3.59
- Last close
- $3.79
CTSO returns
1 week
-6.42%
1 month
-40.13%
3 months
-50.26%
6 months
-68.93%
Year to date
-70.34%
1 year
-79.67%
3 years
-88.92%
5 years
-96.77%
CTSO price return, excluding dividends.
CTSO annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 3.79 | -71.11% |
| 2025 | 13.12 | -29.99% |
| 2024 | 18.74 | -15.59% |
| 2023 | 22.20 | -28.39% |
| 2022 | 31.00 | -63.01% |
| 2021 | 83.80 | -47.43% |
| 2020 | 159.40 | +111.41% |
| 2019 | 75.40 | -53.17% |
| 2018 | 161.00 | +23.85% |
| 2017 | 130.00 | +19.27% |
| 2016 | 109.00 | -2.15% |
| 2015 | 111.40 | -49.36% |
| 2014 | 220.00 | +246.46% |
| 2013 | 63.50 | -9.29% |
| 2012 | 70.00 | -12.50% |
| 2011 | 80.00 | +14.29% |
| 2010 | 70.00 | -26.32% |
| 2009 | 95.00 | +137.50% |
| 2008 | 40.00 | -66.67% |
| 2007 | 120.00 | -85.45% |
| 2006* | 825.00 | -54.17% |
* Partial year: the record begins after the start of 2006; return measured from the first available close.
2026 return is year to date.
CTSO daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 3.67 | 3.80 | 3.59 | 3.79 | +1.61% | |
| 3.81 | 3.81 | 3.67 | 3.73 | -3.62% | |
| 4.00 | 4.06 | 3.84 | 3.87 | -2.27% | |
| 4.07 | 4.29 | 3.89 | 3.96 | -0.13% | |
| 3.85 | 4.05 | 3.66 | 3.97 | -2.10% | |
| 4.17 | 4.29 | 3.83 | 4.05 | -3.23% | |
| 4.38 | 4.50 | 3.93 | 4.19 | +7.31% | |
| 4.13 | 4.15 | 3.77 | 3.90 | -2.50% | |
| 4.08 | 4.48 | 4.00 | 4.00 | -0.50% | |
| 4.28 | 4.57 | 3.97 | 4.02 | -8.22% | |
| 4.44 | 4.83 | 4.33 | 4.38 | +1.86% | |
| 5.20 | 5.20 | 3.94 | 4.30 | -12.42% | |
| 5.25 | 5.36 | 4.90 | 4.91 | -7.71% | |
| 5.53 | 5.59 | 5.31 | 5.32 | -3.45% | |
| 5.79 | 5.79 | 5.16 | 5.51 | -4.17% | |
| 5.88 | 6.00 | 5.50 | 5.75 | -0.17% | |
| 5.96 | 5.96 | 5.75 | 5.76 | +0.52% | |
| 6.03 | 6.11 | 5.56 | 5.73 | -5.45% | |
| 6.00 | 6.24 | 6.00 | 6.06 | -0.16% | |
| 6.33 | 6.34 | 5.13 | 6.07 | -5.30% | |
| 6.50 | 6.62 | 6.32 | 6.41 | +0.63% | |
| 6.37 | 6.74 | 6.25 | 6.37 | +0.63% | |
| 6.74 | 6.98 | 6.11 | 6.33 | -7.59% | |
| 6.76 | 7.44 | 6.75 | 6.85 | -2.14% | |
| 6.90 | 7.40 | 6.74 | 7.00 | 0.00% | |
| 7.14 | 8.12 | 6.80 | 7.00 | -8.85% | |
| 7.22 | 9.44 | 6.66 | 7.68 | +13.61% | |
| 6.68 | 7.00 | 6.64 | 6.76 | -0.88% | |
| 6.82 | 6.88 | 6.24 | 6.82 | +1.49% | |
| 6.60 | 7.50 | 6.40 | 6.72 | -1.18% | |
| 7.26 | 7.50 | 6.80 | 6.80 | -5.56% | |
| 7.02 | 7.50 | 7.02 | 7.20 | +1.41% | |
| 7.40 | 7.80 | 7.00 | 7.10 | -4.05% | |
| 7.00 | 7.62 | 6.80 | 7.40 | 0.00% | |
| 6.38 | 7.62 | 6.22 | 7.40 | +18.97% | |
| 7.20 | 7.80 | 6.00 | 6.22 | -12.64% | |
| 7.20 | 7.22 | 7.10 | 7.12 | -1.11% | |
| 7.60 | 7.60 | 7.20 | 7.20 | -4.51% | |
| 8.00 | 8.00 | 7.54 | 7.54 | -5.75% | |
| 7.26 | 8.00 | 7.26 | 8.00 | +10.50% | |
| 7.60 | 7.78 | 7.24 | 7.24 | -2.16% | |
| 7.60 | 7.96 | 7.20 | 7.40 | +2.78% | |
| 7.48 | 8.00 | 7.20 | 7.20 | -0.55% | |
| 7.22 | 7.80 | 7.20 | 7.24 | +0.56% | |
| 7.56 | 7.60 | 7.20 | 7.20 | -9.77% | |
| 7.80 | 8.00 | 7.30 | 7.98 | +3.64% | |
| 7.40 | 7.78 | 7.36 | 7.70 | +2.12% | |
| 7.60 | 8.00 | 7.16 | 7.54 | +2.45% | |
| 7.56 | 7.70 | 7.16 | 7.36 | +1.94% | |
| 7.60 | 7.70 | 7.04 | 7.22 | +3.14% | |
| 7.26 | 7.26 | 7.00 | 7.00 | -1.13% | |
| 7.54 | 7.54 | 7.08 | 7.08 | -4.32% | |
| 7.20 | 7.52 | 7.00 | 7.40 | +2.78% | |
| 7.48 | 7.70 | 7.00 | 7.20 | 0.00% | |
| 7.46 | 7.66 | 7.20 | 7.20 | -0.28% | |
| 8.00 | 8.02 | 7.22 | 7.22 | -5.50% | |
| 7.96 | 8.00 | 7.64 | 7.64 | -3.05% | |
| 7.80 | 8.00 | 7.50 | 7.88 | +3.68% | |
| 7.20 | 7.80 | 7.20 | 7.60 | +5.56% | |
| 7.10 | 7.50 | 7.00 | 7.20 | -2.44% | |
| 7.62 | 7.80 | 7.20 | 7.38 | -5.14% | |
| 7.80 | 8.02 | 7.78 | 7.78 | 0.00% | |
| 7.60 | 8.20 | 7.48 | 7.78 | +2.37% | |
| 7.80 | 8.50 | 7.40 | 7.60 | -0.26% | |
| 7.38 | 8.00 | 7.38 | 7.62 | +2.42% | |
| 7.80 | 8.00 | 7.40 | 7.44 | -4.62% | |
| 8.10 | 8.20 | 7.60 | 7.80 | -4.18% | |
| 8.40 | 9.00 | 7.60 | 8.14 | -5.35% | |
| 8.72 | 9.20 | 8.36 | 8.60 | +10.26% | |
| 7.72 | 8.16 | 7.62 | 7.80 | -0.26% | |
| 7.90 | 8.20 | 7.64 | 7.82 | +4.55% | |
| 7.60 | 8.42 | 7.40 | 7.48 | -2.09% | |
| 8.00 | 8.72 | 7.00 | 7.64 | +5.52% | |
| 9.40 | 9.92 | 7.24 | 7.24 | -21.30% | |
| 9.60 | 9.80 | 9.10 | 9.20 | -1.50% | |
| 8.34 | 10.40 | 8.20 | 9.34 | +8.86% | |
| 8.20 | 8.88 | 8.20 | 8.58 | +3.87% | |
| 8.52 | 8.60 | 8.24 | 8.26 | -5.71% | |
| 9.26 | 10.00 | 8.76 | 8.76 | -8.18% | |
| 10.00 | 10.04 | 9.20 | 9.54 | -8.09% | |
| 9.80 | 12.10 | 9.62 | 10.38 | +20.14% | |
| 8.00 | 9.00 | 7.64 | 8.64 | +8.00% | |
| 7.76 | 8.26 | 7.62 | 8.00 | +3.09% | |
| 8.60 | 8.60 | 7.40 | 7.76 | -5.60% | |
| 8.42 | 8.80 | 8.00 | 8.22 | -2.84% | |
| 8.46 | 9.42 | 8.44 | 8.46 | +2.17% | |
| 9.60 | 9.60 | 8.16 | 8.28 | -9.80% | |
| 9.50 | 10.40 | 8.74 | 9.18 | -5.94% | |
| 9.24 | 9.90 | 9.00 | 9.76 | -0.20% | |
| 9.70 | 10.40 | 9.00 | 9.78 | +1.87% | |
| 9.66 | 9.80 | 9.10 | 9.60 | +2.56% | |
| 9.80 | 10.56 | 9.08 | 9.36 | -4.68% | |
| 9.80 | 10.10 | 9.24 | 9.82 | -1.01% | |
| 9.98 | 10.34 | 9.04 | 9.92 | +0.81% | |
| 9.40 | 9.90 | 8.80 | 9.84 | +6.26% | |
| 9.40 | 9.60 | 9.00 | 9.26 | +0.43% | |
| 9.20 | 9.40 | 8.86 | 9.22 | +0.22% | |
| 9.02 | 9.34 | 8.70 | 9.20 | -2.13% | |
| 9.26 | 9.60 | 9.00 | 9.40 | -0.63% | |
| 9.40 | 10.00 | 9.20 | 9.46 | -1.25% | |
| 9.80 | 10.60 | 9.06 | 9.58 | -3.82% | |
| 10.54 | 11.00 | 9.84 | 9.96 | -8.12% | |
| 11.60 | 11.98 | 10.30 | 10.84 | -5.08% | |
| 12.20 | 12.20 | 11.40 | 11.42 | -2.56% | |
| 12.40 | 12.60 | 11.60 | 11.72 | -6.98% | |
| 12.20 | 12.60 | 12.20 | 12.60 | +3.45% | |
| 12.60 | 12.60 | 12.00 | 12.18 | -0.16% | |
| 11.68 | 12.58 | 11.40 | 12.20 | +7.02% | |
| 12.20 | 12.38 | 11.38 | 11.40 | -5.79% | |
| 12.40 | 12.60 | 12.10 | 12.10 | -2.42% | |
| 12.60 | 13.00 | 12.40 | 12.40 | +0.98% | |
| 12.80 | 12.90 | 12.22 | 12.28 | +0.66% | |
| 12.40 | 12.90 | 12.20 | 12.20 | -4.09% | |
| 12.80 | 12.96 | 12.20 | 12.72 | +6.00% | |
| 12.20 | 12.90 | 12.00 | 12.00 | -1.96% | |
| 12.60 | 13.00 | 12.20 | 12.24 | -2.55% | |
| 12.80 | 13.00 | 12.30 | 12.56 | -3.09% | |
| 12.60 | 13.00 | 12.28 | 12.96 | +2.69% | |
| 12.22 | 13.14 | 12.22 | 12.62 | +1.61% | |
| 12.80 | 12.80 | 12.40 | 12.42 | -3.72% | |
| 13.88 | 13.88 | 12.60 | 12.90 | -2.27% | |
| 12.20 | 13.40 | 12.00 | 13.20 | +8.20% | |
| 12.20 | 12.60 | 12.00 | 12.20 | +3.21% | |
| 12.20 | 12.20 | 11.60 | 11.82 | +0.34% | |
| 11.74 | 12.08 | 11.42 | 11.78 | +0.68% | |
| 12.42 | 12.42 | 11.40 | 11.70 | -4.10% | |
| 12.40 | 12.40 | 11.96 | 12.20 | +0.83% | |
| 12.40 | 12.40 | 11.92 | 12.10 | -2.42% | |
| 13.00 | 13.20 | 12.40 | 12.40 | +1.64% | |
| 12.18 | 12.58 | 11.60 | 12.20 | +3.39% | |
| 11.58 | 12.70 | 11.58 | 11.80 | +1.20% | |
| 11.80 | 11.86 | 10.62 | 11.66 | +6.58% | |
| 12.00 | 12.00 | 10.80 | 10.94 | -3.36% | |
| 11.60 | 12.00 | 10.64 | 11.32 | +1.07% | |
| 11.80 | 12.00 | 10.52 | 11.20 | -5.56% | |
| 12.40 | 12.40 | 11.00 | 11.86 | -1.17% | |
| 12.22 | 12.90 | 9.98 | 12.00 | -10.58% | |
| 13.20 | 13.92 | 12.24 | 13.42 | -3.59% | |
| 13.90 | 15.00 | 13.20 | 13.92 | +3.26% | |
| 13.72 | 13.80 | 13.26 | 13.48 | +2.12% | |
| 12.40 | 13.32 | 12.12 | 13.20 | +3.45% | |
| 13.20 | 14.00 | 12.00 | 12.76 | -1.85% | |
| 13.70 | 13.80 | 13.00 | 13.00 | -4.41% | |
| 12.90 | 14.00 | 12.90 | 13.60 | +4.62% | |
| 14.40 | 14.40 | 12.56 | 13.00 | -8.19% | |
| 14.88 | 14.88 | 13.60 | 14.16 | -2.48% | |
| 14.40 | 14.86 | 13.70 | 14.52 | +0.14% | |
| 15.20 | 15.98 | 14.50 | 14.50 | -7.29% | |
| 16.26 | 16.88 | 15.60 | 15.64 | -3.46% | |
| 16.30 | 16.30 | 15.40 | 16.20 | +1.50% | |
| 16.10 | 16.32 | 15.40 | 15.96 | -0.87% | |
| 15.50 | 16.18 | 15.40 | 16.10 | +1.90% | |
| 15.40 | 16.00 | 15.38 | 15.80 | -1.25% | |
| 14.60 | 16.50 | 14.00 | 16.00 | +6.81% | |
| 15.06 | 15.20 | 14.60 | 14.98 | -0.53% | |
| 14.60 | 15.20 | 14.60 | 15.06 | +3.58% | |
| 14.58 | 14.62 | 14.20 | 14.54 | +2.25% | |
| 13.80 | 14.58 | 13.60 | 14.22 | +3.04% | |
| 13.78 | 14.00 | 13.58 | 13.80 | +1.62% | |
| 13.10 | 13.78 | 13.00 | 13.58 | +6.09% | |
| 13.10 | 13.36 | 12.80 | 12.80 | -1.39% | |
| 13.10 | 13.20 | 12.80 | 12.98 | 0.00% | |
| 13.10 | 13.26 | 12.40 | 12.98 | +1.41% | |
| 12.84 | 13.40 | 12.60 | 12.80 | -0.16% | |
| 13.20 | 13.40 | 12.60 | 12.82 | +0.94% | |
| 13.00 | 13.80 | 12.60 | 12.70 | +2.42% | |
| 13.50 | 13.70 | 12.40 | 12.40 | -7.46% | |
| 13.60 | 13.70 | 13.40 | 13.40 | -0.15% | |
| 13.40 | 14.32 | 13.40 | 13.42 | -0.15% | |
| 13.20 | 14.00 | 13.20 | 13.44 | +6.67% | |
| 13.60 | 14.02 | 12.60 | 12.60 | -6.11% | |
| 13.60 | 14.60 | 13.40 | 13.42 | -2.04% | |
| 13.74 | 14.60 | 13.40 | 13.70 | +1.18% | |
| 12.66 | 13.56 | 12.66 | 13.54 | +7.46% | |
| 13.20 | 13.56 | 12.60 | 12.60 | -4.40% | |
| 13.94 | 14.00 | 12.82 | 13.18 | -3.51% | |
| 13.78 | 14.00 | 13.20 | 13.66 | +0.89% | |
| 13.40 | 13.60 | 12.62 | 13.54 | +2.58% | |
| 13.80 | 14.04 | 13.00 | 13.20 | -2.94% | |
| 13.78 | 14.60 | 13.40 | 13.60 | +0.59% | |
| 13.56 | 14.14 | 13.48 | 13.52 | -0.73% | |
| 13.64 | 14.20 | 13.58 | 13.62 | +0.59% | |
| 13.80 | 14.20 | 13.50 | 13.54 | -3.56% | |
| 14.00 | 14.38 | 13.80 | 14.04 | +1.59% | |
| 14.58 | 14.58 | 13.40 | 13.82 | -3.76% | |
| 14.80 | 14.80 | 14.00 | 14.36 | -1.64% | |
| 14.40 | 14.60 | 14.20 | 14.60 | +4.14% | |
| 13.96 | 14.58 | 13.40 | 14.02 | +4.47% | |
| 13.40 | 13.84 | 13.00 | 13.42 | -0.30% | |
| 14.00 | 14.00 | 13.36 | 13.46 | -1.03% | |
| 13.80 | 14.00 | 13.46 | 13.60 | 0.00% | |
| 13.60 | 14.00 | 13.22 | 13.60 | +2.10% | |
| 13.20 | 13.60 | 13.02 | 13.32 | +1.52% | |
| 13.16 | 13.62 | 13.00 | 13.12 | +2.66% | |
| 12.80 | 13.60 | 12.32 | 12.78 | -0.47% | |
| 13.20 | 13.50 | 12.62 | 12.84 | -2.73% | |
| 13.20 | 13.80 | 13.20 | 13.20 | -2.94% | |
| 14.00 | 14.00 | 13.08 | 13.60 | -1.31% | |
| 14.20 | 14.20 | 13.62 | 13.78 | -1.57% | |
| 14.80 | 14.80 | 13.74 | 14.00 | -8.62% | |
| 12.80 | 15.32 | 12.80 | 15.32 | +20.25% | |
| 12.78 | 13.50 | 12.40 | 12.74 | -1.24% | |
| 12.50 | 13.20 | 12.30 | 12.90 | +0.31% | |
| 13.00 | 13.32 | 12.80 | 12.86 | +0.47% | |
| 12.82 | 13.32 | 12.56 | 12.80 | +2.24% | |
| 13.40 | 13.60 | 12.00 | 12.52 | -8.48% | |
| 14.40 | 14.40 | 12.60 | 13.68 | -3.66% | |
| 13.30 | 14.58 | 13.30 | 14.20 | +8.07% | |
| 14.00 | 14.60 | 13.10 | 13.14 | -12.28% | |
| 14.40 | 15.18 | 14.40 | 14.98 | +3.45% | |
| 14.40 | 15.00 | 14.20 | 14.48 | -0.82% | |
| 14.80 | 15.06 | 14.08 | 14.60 | -1.22% | |
| 14.40 | 14.92 | 13.90 | 14.78 | +1.23% | |
| 15.60 | 16.00 | 14.10 | 14.60 | -4.70% | |
| 15.72 | 16.32 | 15.06 | 15.32 | +2.13% | |
| 15.90 | 16.60 | 15.00 | 15.00 | -7.52% | |
| 15.60 | 16.66 | 15.32 | 16.22 | +2.53% | |
| 16.78 | 16.78 | 15.80 | 15.82 | -5.50% | |
| 16.60 | 17.00 | 15.64 | 16.74 | +0.97% | |
| 14.20 | 17.00 | 14.14 | 16.58 | +17.26% | |
| 12.44 | 14.24 | 12.20 | 14.14 | +13.67% | |
| 13.04 | 13.04 | 12.00 | 12.44 | -2.66% | |
| 12.44 | 13.60 | 12.28 | 12.78 | +2.73% | |
| 13.94 | 13.98 | 12.26 | 12.44 | -5.18% | |
| 13.20 | 14.00 | 13.12 | 13.12 | -0.61% | |
| 13.60 | 14.00 | 12.00 | 13.20 | -0.90% | |
| 13.54 | 14.00 | 12.80 | 13.32 | +4.23% | |
| 13.82 | 13.96 | 12.20 | 12.78 | -8.45% | |
| 14.40 | 15.82 | 13.82 | 13.96 | -3.32% | |
| 14.20 | 14.98 | 14.20 | 14.44 | +1.98% | |
| 14.60 | 14.72 | 14.00 | 14.16 | -0.28% | |
| 14.80 | 14.98 | 14.20 | 14.20 | -4.70% | |
| 15.60 | 16.00 | 14.90 | 14.90 | -5.82% | |
| 15.60 | 16.00 | 15.40 | 15.82 | +1.28% | |
| 16.20 | 16.24 | 14.80 | 15.62 | -1.76% | |
| 15.82 | 16.58 | 15.82 | 15.90 | +1.66% | |
| 16.20 | 17.00 | 15.42 | 15.64 | 0.00% | |
| 16.80 | 17.00 | 15.60 | 15.64 | -6.46% | |
| 16.60 | 17.20 | 16.60 | 16.72 | +1.95% | |
| 17.00 | 17.20 | 16.40 | 16.40 | -3.53% | |
| 16.98 | 17.20 | 16.98 | 17.00 | +0.95% | |
| 16.84 | 17.28 | 16.60 | 16.84 | -0.94% | |
| 16.60 | 17.28 | 16.02 | 17.00 | +2.66% | |
| 17.10 | 17.60 | 16.40 | 16.56 | -2.59% | |
| 17.86 | 18.00 | 16.80 | 17.00 | -4.06% | |
| 18.20 | 18.40 | 17.60 | 17.72 | -2.21% | |
| 18.38 | 18.40 | 18.10 | 18.12 | -1.09% | |
| 18.80 | 18.80 | 18.28 | 18.32 | -0.65% | |
| 18.20 | 18.60 | 18.20 | 18.44 | -0.86% | |
| 18.40 | 19.72 | 18.40 | 18.60 | +1.53% | |
| 18.56 | 19.00 | 18.00 | 18.32 | -1.72% | |
| 18.92 | 20.00 | 18.48 | 18.64 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the CTSO chart for longer ranges.