Microstrategy style equivalent stock for Ethereum?

So if you want to add bitcoin to a stock portfolio you can invest in stock like Microstrategy (Important in UK for tax free wrappers like ISAs)

Is there a similar Microstrategy equivalent for Ethereum? One that’s heavier on Eth? It doesn’t like Microstrategy owns much Eth that I can?

I know KR1 and Argo also offer some indirect exposure too - any others? Trying to find more options for exposure in UK as we don’t have so many ETFs.