Six years after raising $4.2 billion in the most lucrative sale of crypto tokens to date, digital currency entrepreneurs Brendan Blumer and Kokuei Yuan are back for another public offering.

Bullish's shares were indicated to open more than 75% above their initial public offering price on Wednesday, signaling growing investor confidence in the sector and boosting prospects for future U.S.

The first trade in crypto-trading platform Bullish's stock was at $90 at 1:01 p.m. Eastern for 4.6 million shares, or 143.2% above the IPO pricing of $37. The strong opening comes after the number of shares sold was upsized to 30 million from an original expected offering of 20.