(fixes typo in headline)

* Reports net loss of 50 cents per share

* Company says tackled credit issues with writedowns in Q2

* Shares slip in pre-market trade

By Steve Eder

NEW YORK, July 17 (Reuters) - Marshall & Ilsley Corp (MI.N: Quote, Profile, Research), Wisconsin's largest bank, said on Friday its losses shrunk in the second-quarter as the company aggressively took on credit concerns with writedowns.

Net losses for the Milwaukee-based company fell to $139.3 million, or 50 cents per share, from a loss of $383.8 million, or $1.52 a share, a year earlier.

Marshall & Ilsley announced a loan loss provision of $468 million, $15 million in excess of net charge-offs, which included consumer real estate loans.

Marshall & Ilsley has taken $1.72 billion from the government's $700 billion Troubled Asset Relief Program.