however the fpx, an etf that tracks 100 the largest domestic stocks up to 4 years after thier ipo, climbed more than 40 percent last year. josef schuster of ipox schuster helped create the investment vehicle. "in our opinion, indexing actually works best for the ipo market. that's really what apply, a broad diversified indexing approach. to the largest respective ipos." backing investment banks could be another way to capitalize on increased ipo activity. according to bolan, names like goldman sachs and morgan stanley will benefit the most from a strong ipo market. joseph a bank clothiers and hertz car rentals are threatening to issue a large number of stock shares to prevent hostile takeovers. the so-called "poison pills" have been put in place to prevent men's wearhouse from buying up more than 10-percent of joseph a bank stock. that threshold was lowered friday from 20%. and in the case of hertz, c-n-b-c reports activist investor carl icahn is believed to have bought up to 40-million shares of hertz on a swap. not all of it is common stock but hertz shares rose 2.4% on the news. a lack