Investors typically watch the 30-year Treasury yield as a key indicator in financial markets. During a recent trading session on Tuesday, this yield hit 5.334%, its highest level since 2007. The next day, the U.S. Treasury announced an initiative to conduct a "short-term buy long-term" repurchase transaction potentially exceeding $400 million. This move aimed to influence market dynamics but only temporarily affected the yield, which dropped to 5.183% before rebounding to 5.276% by Friday of the same week. Under the looming shadow of federal debt surpassing $4 trillion, concerns over fiscal deficits continue to impact market sentiments.