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Dropbox is on pace for its best day since going public

Sara Salinas

Shares were trading at more than 5 times their normal trading volume. The stock hit an all-time high above $38. Dropbox went public in March, soaring 35 percent on its first day. Dropbox DBX was on pace for its best day since going public Thursday, with massive trading volumes sending shares up roughly 20 percent at their peak.