KPS Capital Partners delivers a little CPR to struggling businesses. The firm manages the KPS Special Situations Funds, which are invested in troubled companies with annual revenues of at least $400 million in the manufacturing, transportation, and service industries. Specializing in restructurings and turnarounds, it is a hands-on investor, taking controlling stakes in its portfolio companies, working with management, and providing oversight and advice. KPS, which invests on average $200 million to $250 million per transaction, has more than $6 billion in assets under management. Investors in its funds include pension funds, financial corporations, and trusts.