Hyperliquid open interest topped $18 billion for the first time, beating the previous record of $16.36 billion reached on Sept. 19.Open interest stood above $13 billion at the end of August, putting roughly $5 billion more in outstanding positions on the platform within weeks.Bitcoin, Ether and HYPE accounted for roughly $9.33 billion in open interest, while HIP 3 markets continued to draw activity across stocks, commodities and indices.HIP 3 markets have brought perpetual contracts tied to assets such as the S&P 500, gold, crude oil and private companies to Hyperliquid.