Check out which companies are making headlines after the bell Tuesday:
Intel - The chip maker reported first-quarter earnings per share of 38 cents on revenue of $12.76 billion, versus estimates of EPS of 37 cents on $12.81 billion in sales. Intel projected second-quarter revenue of $13 billion, plus or minus $500 million. Analysts expected revenue of $12.96 billion. Its shares gained in after-hours trade.
Yahoo - The search engine reported first-quarter earnings per share of 38 cents, excluding items, on $1.09 billion in sales, compared to estimates of EPS of 37 cents, excluding items, on $1.08 billion in sales. Shares jumped in after-hours trade.
Google - Shares of the Yahoo competitor also rose in after-hours trade, a day before it is expected to report earnings of $639 a share on revenue of $15.52 billion.
Read MoreGoogle expected to post big revenue, but watch out for margins
CSX - The railroad posted first-quarter earnings per share of 40 cents on $3.01 billion in revenue, versus expectations of EPS of 37 cents on sales of $2.99 billion. Its shares climbed in after-hours trade.
Interactive Brokers Group - The company tallied first quarter earnings per share of 35 cents on $354.9 million in revenue, topping estimates. Its shares rose in after-hours trading.
Wintrust Financial - The regional bank reported first-quarter earnings per share of 68 cents, beating estimates. Its shares were unchanged in after-hours trade.
—By CNBC's Kate Gibson
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