NEW YORK (TheStreet) -- Shares of Community Health Systems (CYH) - Get Report were falling 4.3% to $39.87 with heavy trading volume on Thursday after HCA Holdings' (HCA) third quarter warning helped bring down other hospital stocks.

On Wednesday, HCA said it now expects earnings of $1.17 a share for the third quarter, below analysts' estimates of $1.22 a share for the quarter. The company expects revenue to grow 6.9% year over year to $9.86 billion for the quarter, compared to analysts' estimates of $9.85 billion.

HCA's same facility admissions grew 2.9% in the third quarter, compared to a 3.6% increase in the year-ago quarter. Same facility emergency room visits grew 5.8% from the year-ago quarter.

HCA said it now expects earnings of $5.20 to $5.25 a share for the full year 2015, compared to analysts' estimates of $5.29 a share for the full year.

About 3.3 million shares of Community Health Systems were traded by 11:38 a.m. Thursday, above the hospital operator's average trading volume of about 1.7 million shares a day.

CYH data by YCharts

Image placeholder title