News of the decision by New York based Ospraie management to wind down its commodities based hedge fund could be causing some anxiety for local resource companies. Ospraie has reduced its holding in Iluka from 10.8 to less than 5 per cent over the last few months, but still holds 14.7 per cent of Mineral Deposits, 19.5 per cent of both Great Southern and Consolidated Rutile. A US service that can be used to work out who owns what says that there are at least 10 listed Australian companies whose share prices will come under pressure as the fund is unwound.