Here is how four major, publicly traded ASC chains fared in the stock market for the week of Aug. 7 to Aug. 11, 2017.
Note: This data was compiled using Google Finance.
1. Envision Healthcare
Opened: $55.79 on Aug. 7
Peaked: $58.02 on Aug. 8
Closed: $52.89 on Aug. 11
Percent change between Aug. 7 and Aug. 11: -5.19 percent
2. HCA Healthcare
Opened: $79.09 on Aug. 7
Peaked: $79.66 on Aug. 11
Closed: $79.37 on Aug. 11
Percent change between Aug. 7 and Aug. 11: 0.35 percent
3. Surgery Partners
Opened: $20.60 on Aug. 7
Peaked at open
Closed: $11.02 on Aug. 11
Percent change between Aug. 7 and Aug. 11: -46.5 percent
4. Tenet Healthcare
Opened: $16.46 on Aug. 7
Peaked at open
Closed: $14.05 on Aug. 11
Percent change between Aug. 7 and Aug. 11: -14.64 percent