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Trader Radar - Tuesday April 21st

Q: On Fast Money’s trader radar we look at the stock that was lighting up screens across Wall Street. Founded in 1851 as the New Your and Mississippi valley printing Telegraph Company, this company introduced the singing telegram eighty years later... now the world's largest money transfer business, investors were singing with joy today, as shares rose on strong first-quarter results. Who is it?

A: Check back soon!