That one number—20%—is the entire reason StablecoinX's stock surged 12% overnight. As Ethena's treasury company, StablecoinX disclosed that it holds a full fifth of ENA's total token supply, and shares jumped the moment the news broke.

There was no product launch, no new business partnership—just a disclosure of holdings. But for investors, "holding one-fifth of the supply" is weighty news on its own, one that ties a publicly listed company's stock price directly to the concentration of a single token.

That's where the public information ends for now. StablecoinX has yet to disclose when it acquired the ENA, at what cost, or what it plans to do with the holdings going forward.