Scott Mlyn | CNBC
Check out which companies are making headlines after the bell Thursday:
Amazon.com - The online retailer jumped in extended-hours trading after reporting quarterly earnings that surpassed estimates.
Biogen Idec - The biotechnology company rose in extended-hours trading after reporting fourth-quarter results.
Google - The online-search engine fell in extended-hours trading after tallying quarterly earnings and revenue below expectations.
Visa - The payment-transaction processor rose in extended-hours trading after posting quarterly earnings that beat expectations and unveiled a 4-for-1 stock split.