Crypto markets faced pressure from a surge in the U.S. 30-year Treasury yield to 5.5%, its highest level since 2004, as persistent inflation concerns reduced appetite for risk assets and raised borrowing costs for leveraged positions. Bitcoin traded at $83,631, down 1.44%, while Ethereum fell 0.23% to $2,685.58. Altcoins outperformed in parts of the market: Quant rose 16.41%, Artificial Superintelligence Alliance gained 12.38%, Ethena climbed 9.76%, NEAR Protocol advanced 9.33% after Bitwise ETF listing approval, and SUI increased 9.14% following the DeepBook app launch and expansion of decentralized-finance total value locked above $1.2 billion. Regulatory developments included the Federal Reserve's proposed GENIUS Act stablecoin reserve and capital rules, which opened a 60-day comment period, and the SEC's progress on Regulation Crypto Assets after Congress failed to pass the CLARITY Act. The developments could shift crypto oversight toward agency rulemaking rather than comprehensive legislation. New York's lawsuit against Polymarket over alleged illegal gambling operations could influence regulation of prediction markets and similar platforms' U.S. operations. Bitget confirmed a $351.6 million hot wallet breach attributed to North Korean hackers, while billions of dollars in Bitcoin options expired as traders adjusted positions ahead of month-end and quarterly rebalancing flows. Market data showed a Fear and Greed Index reading of 12.00%, an annual percentile of 73 labeled Greed, total crypto market capitalization of $2.88 trillion, trading volume of $106.53 billion, an Altcoin Season Index of 90.91%, a quarterly percentile score of 53 out of 100, total futures market open interest of 1.24 billion, futures at 376.78 billion, and perpetuals at the reported level. Upcoming developments include the Hemi token unlock on Sep. 29, TOKEN2049 Singapore on Oct. 1, U.S. September nonfarm payrolls on Oct. 2, and the reported 5.5% 30-year Treasury yield event on Sep. 25.