Two investors in Seacor Holdings have taken their stakes in the diversified shipowner in opposite directions.

One has enlarged its interest in the Charles Fabrikant-led company, while the other has sold some shares.

BlackRock has upped its stake to 12.5%, or 2.2 million shares, according to a regulatory filing. That is up from 11% — or 1.9 million shares — of Florida-based Seacor Holdings a year earlier.