Golden Finance reported that according to data from The Block, Ethereum NFT trading volume rose to US$186 million last week, a three-month high, an increase of 67% from US$111 million the previous week. The Pudgy Penguins series was the main catalyst for the craze after the launch of its PENGU token. The series generated $108 million in trading volume, and a single Pudgy Penguins once traded for more than 29 ETH, but fell quickly after the token was issued. Bitcoin is the second largest NFT ecosystem, with a weekly trading volume of just $33 million.