The New York-quoted containership operator emerged as one of the “worst performers” on the TradeWinds Shipping Index this afternoon after sliding 3.44% to $27.51.

A handful of Wall Street observers who track the Jones Act operator believe the drop has something to do with a downgrade that FBR issued early Monday morning.

In a client briefing John Mims, a staunch advocate of Matson’s shares, abandoned his “outperform” recommendation and stamped the stock with “market perform” rating.

“Our