Does Justin Sun own Poloniex?

Could you please clarify for me if Justin Sun, the well-known figure in the cryptocurrency world, is indeed the owner of Poloniex, the popular digital asset exchange? I've heard rumors linking the two, but I'd like to have a definitive answer to this question. If he does own Poloniex, could you also provide some insights into how this ownership has impacted the exchange's operations, user experience, and reputation within the industry?