Historical Stock Price
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Video: Compound Annual Growth Rate (CAGR) Definition
Date Open High Low Close Volume
09/04/2026 $0.34 $0.37 $0.34 $0.35 462.30K
09/08/2026 $6.76 $7.44 $6.75 $6.85 18.10K
09/09/2026 $6.74 $6.98 $6.11 $6.33 36.80K
09/10/2026 $6.37 $6.74 $6.25 $6.37 14.40K
09/11/2026 $6.50 $6.62 $6.32 $6.41 12.10K
CytoSorbents Corporation is engaged in the treatment of life-threatening conditions in intensive care (ICU) and cardiac surgery using blood purification via its proprietary polymer adsorption technology. Co.'s flagship product, CytoSorb, is an extracorporeal cytokine absorber, designed to reduce the cytokine storm or cytokine release syndrome that could otherwise cause massive inflammation, organ failure and death in common critical illnesses, such as sepsis, burn injury, trauma, lung injury, cytokine release syndrome due to cancer immunotherapy, and pancreatitis. Its other products include CytoSorb, animal-targeted VetResQ, DrugSorb-ATR and ECOS-300CY.
CTSO historical stock prices picture
Cytosorbents (CTSO) has the following price history information. Looking back at CTSO historical stock prices for the last five trading days, on September 04, 2026, CTSO opened at $0.34, traded as high as $0.37 and as low as $0.34, and closed at $0.35. Trading volume was a total of 462.30K shares. On September 08, 2026, CTSO opened at $6.76, traded as high as $7.44 and as low as $6.75, and closed at $6.85. Trading volume was a total of 18.10K shares. On September 09, 2026, CTSO opened at $6.74, traded as high as $6.98 and as low as $6.11, and closed at $6.33. Trading volume was a total of 36.80K shares. On September 10, 2026, CTSO opened at $6.37, traded as high as $6.74 and as low as $6.25, and closed at $6.37. Trading volume was a total of 14.40K shares. On September 11, 2026, CTSO opened at $6.50, traded as high as $6.62 and as low as $6.32, and closed at $6.41. Trading volume was a total of 12.10K shares.

CTSO Historical Stock Prices By Date:

CTSO historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into Cytosorbents shares, starting with a $10,000 purchase of CTSO, and working forward through the historical stock price information to today.

Growth of $10,000.00
Without Dividends Reinvested

Start date: 09/14/2016
End date: 09/11/2026
Start price/share: $121.80
End price/share: $6.41
Dividends collected/share: $0.00
Total return: -94.74%
Average Annual Total Return: -25.51%
Starting investment: $10,000.00
Ending investment: $526.42
Years: 10.00
Date Close
09/04/2026$0.35
09/08/2026$6.85
09/09/2026$6.33
09/10/2026$6.37
09/11/2026$6.41
CTSO is categorized under the Healthcare sector; below are some other companies in the same sector:

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Also explore: CTSO shares outstanding history

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