Hedge fund tycoon Michael S. Gross remains a major shareholder in Global Ship Lease following its merger with Poseidon Containers.

Gross holds 13.5% stake in the New York-listed shipowner, in which he has been a shareholder since 2008, an SEC filing shows.

His stake of 10,752,754 shares is split between his personal account and that of investment fund Marathon Founders.

Gross disclosed his interest after Marathon converted 3,416,355 class B shares into class A stock.

The investor is one of the leading shareholder in GSL behind private equity firm Kelso, which was a major Poseidon investor, and CMA CGM.

Management Investor Co, in which new GSL executive chairman George Youroukos is the major stakeholder, is also a significant shareholder post-deal.

Global Ship Lease merged with long-term IPO hopeful Poseidon Containers in November 2018.

The deal gave the company a $1.3bn fleet of 38 containerships and contracted revenue of over $700m.

This article has been updated to correct an earlier draft which suggested Gross has increased his stake in GSL.