Australia-listed shares of Block tumble as bitcoin weakens

** ASX-listed shares of fintech firm Block slump 1.6% to A$94.465, their lowest levels since October 2024 ** U.S. President Donald Trump signs executive order to establish a strategic bitcoin reserve** However, U.S. crypto czar David Sacks says the U.S. will not acquire additional crypto assets** Bitcoin-based revenue makes up ~40% of the firm's total revenue** BTC lost 3.3% following Sacks' remarks, and is close to the key support level near $86,400** Stock has lost 33% YTD vs the information technology index's losses of 9.7%