According to Foresight News, David Duong, head of research at Coinbase, tweeted that the "largest short position in ETH in history" is a serious exaggeration. He analyzed that the inflow of funds into the Ethereum spot ETF significantly increased in June, with a net inflow of $1.16 billion. Driven by increased participation of institutions in Chicago Mercantile Exchange (CME) basis trading, the inflow of funds into these instruments has reached a historic high. As of June 24th, the short position of leveraged funds on Ethereum futures on the Chicago Mercantile Exchange has climbed from $466 million in early May to $1.6 billion, an increase of $1.14 billion, which is highly consistent with the incremental inflow of ETF funds. The reason is that the basis yield provided by the Chicago Mercantile Exchange's Ethereum futures (relative to spot) has increased from an average of 6% in February to 8% -9% in May and June, attracting more institutional investors to choose to buy Ethereum spot and sell futures.