Here is how four major, publicly traded ASC chains fared in the stock market for the week of Aug. 21 to Aug. 25, 2017.
Note: This data was compiled using Google Finance.
1. Envision Healthcare
Opened: $50.22 on Aug. 21
Peaked: $52.09 on Aug. 25
Closed: $52.04 on Aug. 25
Percent change between Aug. 21 and Aug. 25: 3.62 percent
2. HCA Healthcare
Opened: $77.54 on Aug. 21
Peaked: $80.09 on Aug. 25
Closed: $79.51 on Aug. 25
Percent change between Aug. 21 and Aug. 25: 2.54 percent
3. Surgery Partners
Opened: $9.20 on Aug. 21
Peaked: $9.27 on Aug. 22
Closed: $8.90 on Aug. 25
Percent change between Aug. 21 and Aug. 25: -3.26 percent
4. Tenet Healthcare
Opened: $15.04 on Aug. 21
Peaked: $17.33 on Aug. 21
Closed: $16.49 on Aug. 25
Percent change between Aug. 21 and Aug. 25: 9.64 percent