Dropbox, Inc. (NASDAQ:DBX – Get Free Report)’s share price reached a new 52-week high during trading on Wednesday . Wall Street Zen upgraded shares of Dropbox from a “hold” rating to a “buy” rating in a research report on Sunday, June 28th. One equities research analyst has rated the stock with a Buy rating, three have issued a Hold rating and two have issued a Sell rating to the company’s stock. Insider Transactions at DropboxIn other Dropbox news, CTO Ali Dasdan sold 5,666 shares of Dropbox stock in a transaction dated Monday, May 18th. In the last three months, insiders sold 129,082 shares of company stock valued at $3,489,910.