Odaily News The Bitcoin volatility index BitVol, launched by financial index company T3 Index and options trading platform LedgerX, rose to 54.34 yesterday, a single-day increase of 4.04%; the Ethereum volatility index EthVol rose to 61.29, a single-day increase of 6.67%. The BitVol and EthVol indices measure the expected 30-day implied volatility of BTC and ETH respectively.