Weinstein has recently moved into the property sector, accumulating stakes in Workspace and Grainger as well as investing in investment trusts.

The hedge fund manager blasted the complacency of “super rich” fund managers with “golf courses” in an interview with the Sunday Times, as he opened up about his campaign for the first time in nearly two years. The campaign targeted investment trusts that traded at a discount to the net asset value of the assets they own.

It led to Saba requisitioning votes to install new directors and, in turn, appoint Saba as the manager of the trusts, the Sunday Times reports. Now Baillie Gifford US Growth Trust, which holds shares in SpaceX and payment platform Stripe, is in the firing line. Shareholders are being asked to vote later this month to decide the future of the £1bn trust.

US Growth chair Tom Burnet said that outvoting Saba, given its significant stake, may now be more difficult because of Sessa’s recent appearance on the share register. Sessa increased its holding from the 5.1% disclosed in September to 7.7% last week. If it votes with Saba, their combined holding would reach 37.6%, but Sessa has not yet stated its voting intentions.

Baillie Gifford US Growth Trust is preparing to fight a requisition notice filed by Saba in August, which calls for shareholders to appoint three Saba-nominated directors to the board: Jason Chen, Thomas H McGlade and James Waterlow. The AGM will be held at the offices of Stephenson Harwood on 23 October.

Weinstein criticised the trust boards for complaining about his aggressive tactics, saying: “What’s true about investment trusts is they’re held by ‘mom and pop’ investors. They have made [more than] £600m, which would not have happened if we did not have these campaigns.

“I’m not Robin Hood. I didn’t come here to help the British pensioner. But it gives me great pleasure both in the US and the UK that if I can [profit on closing the discount] for my investors, there is a secondary good. The results are so special that of course we want to invest more.”

The hedge fund manager denied he had “created harm”, as claimed by some of the trusts, pointing out that some of them had “horrific performances”.

His £600m calculation covers the 12 companies where he effected change, including Herald Investment Trust, which conducted a tender to allow Saba to exit and appointed Aberdeen as manager. At Smithson Investment Trust, fund manager Terry Smith acknowledged to the paper that Saba’s presence on the register influenced the decision to change its structure.

He added: “If we made £600m [for investors] and some super rich manger with their golf courses… and these guys living large, and if they lost £26m in fees, all of that money went into the investors’ pocket or the investor took their money and reinvested it into another fund.

“We have created so much good. I ask somebody to stand up against me on Speakers’ Corner [in Hyde Park] or some podium and debate me about this, because the math is the math.”

Asked about his “aggressive tactic” of building stakes just below the 30% takeover threshold, then forcing a vote to take control and relying on retail investors not voting so he can win on a low turnout, he said: “In elections, some people vote and some people don’t. We have been aggressive. But aggressive can be a pejorative and it can be a positive.”