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2026-08-20

US Treasury Intervention Calms Bond Market, Biotech Surges

Macroeconomics

The U.S. Treasury announced it would double the size of its long-dated bond buyback operations to at least $4 billion per operation, aiming to support liquidity and curb rising yields. This came as U.S. federal government debt surpassed $40 trillion for the first time. Minutes from the Federal Reserve's July meeting indicated that "many" officials believed further policy tightening might be necessary if inflation did not decline, with "some" noting that current financial conditions might not be restrictive enough. Elsewhere, the UK's July UK - Consumer Price Index rose 0.3% month-on-month and 2.9% year-on-year, meeting expectations, while Japan's July Japan - Exports increased by 23.2% year-on-year.

Major Stock Markets

Major U.S. stock indices ended modestly higher, breaking a three-day losing streak, with the S&P 500 gaining 0.2% to 7708, the Dow Jones Industrial Average up 0.2% to 53463, and the NASDAQ Composite Index rising 0.2% to 26331. This rebound was significantly influenced by a major surge in the healthcare sector, particularly Moderna, which soared nearly 177% following positive Phase 3 trial results for its personalized mRNA cancer therapy developed with Merck. However, gains were tempered by continued weakness in semiconductor stocks. European markets were mixed, while Asian equities saw varied performance, with mainland Chinese A-shares experiencing notable declines (Shanghai Stock Exchange Composite Index down 2.4%, Shenzhen Stock Exchange Component Index down 5.01%, ChiNext down 6.26%) and South Korea's South Korea - KOSPI Index was down -5.8% to 6471.

Major Government Bonds

U.S. government bond yields saw a significant decline, particularly at the long end of the curve, following the U.S. Treasury's unexpected announcement to expand its long-dated bond buyback program. The benchmark US - 10-Year Treasury Note Yield fell down -0.07 percentage points to 4.6%, while the 30-year Treasury yield dropped nearly 10 basis points to around 5.19%. This intervention led to a broad weakening of the US Dollar Index, with the US Dollar Index falling down -0.9% to 98.8, a record low.

Major Commodities

Gold prices surged, climbing 3.6% to settle at $4579.8 per ounce, reaching its highest level since early June, driven by the weaker U.S. dollar and declining Treasury yields. WTI Crude Oil prices extended their gains for a fourth consecutive session amidst ongoing geopolitical tensions in the Middle East, with WTI Crude Oil settling up 0.5% at $84.5 per barrel and Brent Crude Oil rising 0.1% to $91.45 per barrel.

This content was generated by AI.

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