Asian stocks fall as Treasury yield rebound rattles global markets

Asian stock markets opened broadly lower on Friday, August 21, tracking a sharp decline on Wall Street as rising bond yields and weak retail data from Walmart ↗ 0.90% dampened risk appetite across the region.

Japan's Nikkei 225 fell roughly 0.9%, South Korea's Kospi dropped over 1%, and Australia's ASX 200 edged down 0.18%. The selloff followed a bruising Thursday session on Wall Street, where the Dow Jones Industrial Average tumbled 703.84 points, or 1.32%, to 52,759.21, the S&P 500 dropped 0.87%, and the Nasdaq 100 fell 0.7% for a fifth consecutive loss.ndtvprofit+3

Treasury Buyback Skepticism Drives Yields Higher

The pressure stemmed from a rapid reversal in U.S. Treasury markets. The 30-year yield rose six basis points to close at 5.25% on Thursday, recouping most of the decline sparked a day earlier by the Treasury's surprise decision to increase buybacks of long-dated bonds. The 10-year yield erased its losses to close at 4.70%.straitstimes+1

Treasury Secretary Scott Bessent said buybacks "could be more than the $4 billion" size planned to start in September, but market participants remained unconvinced the move would address the structural forces driving yields higher. "It was just a housekeeping move destined to be short-term, at best," said Mark Malek, chief investment officer of Muriel Siebert & Co.economictimes+1

Gavin Friend, senior market strategist at NAB, noted that investors had "expressed skepticism that the U.S. Treasury's planned increased bond buybacks would help lower longer-end yields," contributing to declines in Japanese government bond futures.wsj

Inflation Fears and Oil Add to Headwinds

Elevated crude oil prices compounded the pressure. Brent crude had rallied for five consecutive sessions as President Donald Trump threatened Iran with "economic warfare," though it eased slightly on Friday morning to $93.10 a barrel.ndtvprofit+1

In Japan, consumer inflation data showed prices excluding fresh food climbed 1.8% in July from a year earlier, up from 1.6% in June, keeping the Bank of Japan on track for a potential rate hike as soon as September.straitstimes+1

Hardika Singh at Fundstrat Global Advisors summed up the broader challenge: "Making yields go down over the longer period will require the painful work of bringing down the debt."straitstimes