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Video: Compound Annual Growth Rate (CAGR) Definition
ATOS Historical Price Range
Date Open High Low Close Volume
07/08/2026 $2.51 $2.54 $2.38 $2.45 128.00K
07/09/2026 $2.42 $2.42 $2.27 $2.36 144.10K
07/10/2026 $2.37 $2.39 $2.22 $2.37 65.70K
07/13/2026 $2.37 $2.42 $2.21 $2.40 177.60K
07/14/2026 $2.35 $2.36 $2.23 $2.26 157.70K
About Atossa Therapeutics
Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical company. It is engaged in developing medicines in areas of significant unmet medical need in oncology with a focus on using (Z)-endoxifen to prevent and treat breast cancer. Its lead drug candidate under development is oral (Z)-endoxifen, which it is developing for both the prevention and treatment of breast cancer. (Z)-endoxifen is the potent Selective Estrogen Receptor Modulator for estrogen receptor inhibition and causes estrogen receptor degradation. In addition to its potent anti-estrogen effects, (Z)-endoxifen has been shown to target PKCB1, a known oncogenic protein, at clinically attainable blood concentrations.
ATOS historical stock prices picture
Atossa Therapeutics (ATOS) has the following price history information. Looking back at ATOS historical stock prices for the last five trading days, on July 08, 2026, ATOS opened at $2.51, traded as high as $2.54 and as low as $2.38, and closed at $2.45. Trading volume was a total of 128.00K shares. On July 09, 2026, ATOS opened at $2.42, traded as high as $2.42 and as low as $2.27, and closed at $2.36. Trading volume was a total of 144.10K shares. On July 10, 2026, ATOS opened at $2.37, traded as high as $2.39 and as low as $2.22, and closed at $2.37. Trading volume was a total of 65.70K shares. On July 13, 2026, ATOS opened at $2.37, traded as high as $2.42 and as low as $2.21, and closed at $2.40. Trading volume was a total of 177.60K shares. On July 14, 2026, ATOS opened at $2.35, traded as high as $2.36 and as low as $2.23, and closed at $2.26. Trading volume was a total of 157.70K shares.

ATOS Historical Stock Prices By Date:

ATOS historical cagr picture

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

Growth of $10,000.00
Without Dividends Reinvested
Start date: 07/18/2016
End date: 07/14/2026
Start price/share: $756.00
End price/share: $2.26
Dividends collected/share: $0.00
Total return: -99.70%
Average Annual Total Return: -44.10%
Starting investment: $10,000.00
Ending investment: $29.89
Years: 9.99
ATOS Historical Closing Prices
Date Close
07/08/2026$2.45
07/09/2026$2.36
07/10/2026$2.37
07/13/2026$2.40
07/14/2026$2.26
Healthcare Historical Prices
ATOS is categorized under the Healthcare sector; below are some other companies in the same sector:

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Also explore: ATOS shares outstanding history

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