Altcoin open interest rises as ZEC, BNB, ARB, XRP, and SOL gain momentum

Traders are piling into altcoin futures at a pace that would make a Vegas pit boss nervous. Open interest across perpetual futures markets for ZEC, BNB, ARB, XRP, and SOL has climbed sharply, with ZEC alone hitting a record $2.4 billion in open interest in early September 2026. The surge coincides with ZEC’s price blasting past the $1,000 mark, a milestone that caught a lot of short sellers flat-footed. Roughly $34 million in short positions were liquidated in a single session as the rally accelerated. ZEC leads the charge, and it’s not even close Zcash has been the standout performer in this derivatives wave. Data from aggregators including CoinGlass and Coinalyze shows that ZEC’s open interest growth has tracked tightly with its price action, meaning the capital flowing in is largely speculative and leveraged rather than spot-driven. ZEC briefly surpassed Hyperliquid (HYPE) in market capitalization around September 6, 2026. Speculation around potential ETF approvals has been one catalyst fueling the rally. The broader altcoin picture SOL’s open interest reached 72.11 million tokens in mid-2026, with prices trading above $100. XRP’s futures positioning climbed to 2.35 billion toke...