I think it's just a bug from CMC, currently Polkadot New is at Rank 2155. I didn't follow Polkadot but for a moment I was shocked when Polkadot was in the Top 10 position, I didn't follow Polkadot. And for Polkadot members/hodlers, hope you find success there.
I am not following its price action closely but Polkadot (New) being at #2155 does not mean it is actually at this rank, it means that its circulating supply is not yet known/entered (at least on CMC). But as I see on Coingecko, it is in fact at #9, so it was not a bug on CMC. I expect DOT being in the top 5 in the future, its a huge project.