Hanover Compressor ( HC) uncorked a grand slam of bad news Tuesday, telling Wall Street it will miss earnings estimates, restate seven quarters' of results, oust its chief financial officer and that it received an inquiry from the SEC. Investors responded by bidding the stock up 13%. "The good news is all the bad news is out," J.P. Morgan analyst Michael Lamotte wrote in a research note. "We are maintaining our buy rating because of underlying asset value and our conviction that management will get it right." Houston-based Hanover, which makes pumps to transport natural gas, saw its shares rise $1.92 to $16.