Alexander Roepers ' Atlantic Investment Management is among the many hedge funds that recently filed their 13Fs with the U.S. Securities and Exchange Commission, disclosing their holdings in U.S-traded companies as of March 31. The filing showed that Roeper's fund $1.33 billion worth of equities in its portfolio and that the firm was primarily invested in the materials and industrials sectors, which comprised 72% of its portfolio's value. Roepers founded the hedge fund in 1988 and has been exploring a strategy that mainly targets mid and small-cap stocks, with a great focus on fundamental value.