Total altcoin futures open interest climbed from $28.4B to $39.2B across all exchanges this week — a 38% jump not seen since October 2025. SOL, SUI, and AVAX led the charge, with SOL-USDT OI alone up $1.8B in 5 days. Historically, when alt OI outpaces BTC OI growth by 3:1 ratio during a BTC breakout, meaningful altcoin rallies of 30–80% followed within 4–6 weeks.
The setup is currently in place.