After-hours buzz: MasterCard, H&R Block & More


Check out which companies are making headlines after the bell Tuesday:

MasterCard The payment processor announced a 10-for-1 stock split and increased its quarterly dividend 83 percent to $1.10 a share. The company also announced a $3.5 billion stock-repurchase program. Its shares surged in after-hours trading.

Lab Corp. The clinical-testing provider's shares dropped in after-hours trading after it projected 2014 revenue in line with estimates but earnings-per-share below expectations.

H&R Block The provider of tax-preparation services reported quarterly revenue below Wall Street's expectations. Its shares fell in after-hours trading.

Smith & Wesson The gun manufacturer offered third-quarter guidance above expectations. Its shares rallied in after-hours trading.

—By CNBC's Kate Gibson.

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