Morgan Stanley continues to hammer Scorpio Tankers over fees and commissions paid to its private management company, but now Scorpio is hammering back.

The latest exchange represents a deepening of the rift described by TradeWinds in September between shipping’s fastest-growing company and its former lead underwriter.

While both sides sought to downplay the conflict at the time of the earlier report, it has snowballed after another critical research note from Morgan Stanley analyst Fotis Giannakoulis and a retort from Scorpio president Robert Bugbee.

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