Global Tech Stocks and Futures Decline Amid Surging Treasury Yields

U.S. stock futures and Asian technology shares declined early Monday, August 24, 2026, as elevated global Treasury bond yields and escalating trade tensions continued to pressure international financial markets.

Technology sector shares led the downturn in premarket trading, with the State Street Technology Select Sector ETF falling nearly 1 percent. Coherent dropped 5 percent, Lumentum lost 4.5 percent, and Sandisk pulled back by 4 percent, while Corning and Seagate each decreased by 3 percent.

The pullbacks follow a losing week on Wall Street, where the Dow Jones Industrial Average dropped 0.8 percent to log its second straight weekly decline. The S&P 500 slipped 1.4 percent and the Nasdaq Composite fell 2 percent, ending three-week winning streaks for both indexes.

Asian and European equities mirrored the downturn. South Korea's Kospi dropped 3.12 percent to close at 6,696.96, while Japan's Nikkei 225 fell 0.74 percent to 65,528.09. European technology shares dropped 0.78 percent, pulling the regional Stoxx 600 index down 0.1 percent at the open.

Market volatility remains tied to rising fixed-income yields. The U.S. 30-year Treasury bond yield reached a near 20-year high above 5.3 percent last week, while yields in France, Germany, and Japan also touched multiyear peaks. Federal Reserve Chair Kevin Warsh is scheduled to address the central bank's annual symposium in Jackson Hole, Wyoming, later this week.

Jefferies Chief Market Strategist David Zervos analyzed recent tactical Treasury maneuvers aimed at stabilizing the long end of the yield curve.

"I argue that the Treasury's surprise decision to upsize tactical long-end buybacks is effectively a Treasury-led 'Operation Twist' designed to counter shifts in shorter term market conditions, rather than a form of QE," said David Zervos, chief market strategist at Jefferies.

Financial markets are also responding to fiscal policy shifts and government debt concerns. David Zervos noted that buyback operations still influence monetary conditions despite lacking direct reserve creation channels.

"While buybacks do not create reserves and therefore lack QE's direct money-printing channel, I believe they do leave room for fiscal expansion and deliver some QE-like reflationary effects," said David Zervos, chief market strategist at Jefferies.

Geopolitical strain intensified as the U.S. government prepared new economic measures against Tehran. West Texas Intermediate futures declined 1.62 percent to $85.65 per barrel, while Brent crude fell 1.38 percent to $93.09 per barrel.

Treasury Secretary Scott Bessent announced that Washington would roll out its toughest economic restrictions against Iran.

"At dawn begins an economic D-Day — the single greatest financial offensive ever marshaled against an adversary," said Scott Bessent, U.S. Treasury Secretary.

Trade conflicts also broadened in North America after trade negotiations failed between Ottawa and Washington. Following a 50 percent tariff implementation by the U.S. administration on various Canadian imports, Canadian Prime Minister Mark Carney announced retaliatory tariffs scheduled to take effect on September 8.

Spot gold gained 0.75 percent to hit $4,637.28 per ounce, reaching its highest point since mid-May as investors sought safe-haven assets. Investors now await Wednesday's July personal consumption expenditures price index alongside scheduled corporate earnings reports from Nvidia and Marvell Technology.