Because Zoltek Companies, Inc. (NASDAQ:ZOLT) has faced a declination in interest from the entirety of the hedge funds we track, we can see that there were a few money managers that elected to cut their full holdings in Q1. It's worth mentioning that Thomas E. Claugus's GMT Capital dropped the biggest position of the "upper crust" of funds we key on, valued at an estimated $3.1 million in stock.. Jim Simons's fund, Renaissance Technologies, also cut its stock, about $1.4 million worth. These bearish behaviors are interesting, as aggregate hedge fund interest dropped by 2 funds in Q1.