$ZEC : Open Interest Surges Above $1.5B as Price Breaks $638 On May 20, 2026, ZEC futures open interest surged above $1.5 billion, marking a +24.21% increase within 24 hours, coinciding with a strong breakout in the spot market. At the same time, ZEC broke above the $638–$648 range, showing strong upward momentum across multiple major exchanges. According to Coinglass data, the sharp rise in open interest reflects a rapid influx of leveraged positions, while exchanges such as HTX and OKX recorded a significant spike in trading volume during the move. 👉 Overall, ZEC is experiencing a phase of simultaneous spot and derivatives expansion, driven by strong speculative capital inflows.