As widely reported, the fund was closed following the departure of Ted Alexander, who left the firm for academia.
The global long/short fund was started in 2011 with its then star manager Robin Geffen at the helm, and co-managed with Alexander.
The Ucits compliant fund was launched to allow the group to use its sector research to its full potential by shorting sectors where the in-house view was bearish and adding additional gearing on sectors it thought would outperform.
It was a small fund at the time of closing, with an AUM of about £187,450 at the time it was run down.
Neptune confirmed that the Neptune Global Long/Short Sector Fund has been closed as it regularly reviews its fund range to ensure it meets the requirements of investors.