Bitcoin Volatility Surges Ahead of Halving Event While Ether Calms

Bitcoin's 30-day historical volatility rose to nearly 60%, surpassing ether's volatility by 10 percentage points, the highest spread in at least a year.

The volatility spread flipped after the SEC approved several spot BTC ETFs, with flows breeding more BTC upside volatility.

Ether volatility lowered as probability of SEC approving an ETH ETF by May declined.

Upcoming BTC halving event, reducing mining rewards by 50%, is creating bullish sentiments and volatility.

Options market pricing in elevated BTC volatility around halving, but positioning also sets up chance of "sell the news" pullback.