Avis Budget Group's (CAR) stock plunged 48% as intraday volume topped 13.6 million shares versus the daily average of about 2.12 million.

The shares slumped for the second straight day after short sellers pocketed $2.8 billion in Wednesday's rout, Bloomberg reported, citing data from S3 Partners.

ASGN (ASGN) shares tumbled 46% a day after the company reported lower Q1 adjusted net income and issued weaker-than-expected Q2 guidance.

Volume topped 5.63 million shares versus the daily average of 830,549.

ServiceNow (NOW) faces softer organic revenue trends and a slightly weaker margin outlook even after strong Q1 results, Oppenheimer said.

The stock fell 18% as volume topped 65 million shares versus the daily average of almost 21.9 million.

Price: 230.94, Change: -213.00, Percent Change: -47.98