At time of creating question Mr Beast had 433 million subscribers. T-series was in second place with 303 million subscribers.

I will not look for higher accuracy numbers than those immediately displayed, so if the close date was 9 September with the numbers above this would resolve to the 130M - 139.999M option without having to wonder if the gap might be just under 130M.

Resolves to lead at end of 2025.