Tech Stocks Slide as Bond Yields Spike and Oil Surges Past $91

Canadian and global equity investors face fresh pressure as a double shock from spiking bond yields and elevated crude prices triggered a steep retreat in tech valuations. Wall Street benchmarks dropped across the board, led by a 1.3 per cent slide in the tech-heavy Nasdaq Composite and a 0.7 per cent decline in the S&P 500. For portfolios sensitive to interest rates and commodity swings, this sharp rotation signals rising hurdles for growth assets heading into the fall.

What People Are Searching For

Market watchers and retail traders are tracking whether the rapid pullbacks across artificial intelligence hardware and semiconductor names represent a routine pullback or a broader structural rotation. Queries spiked regarding the sudden weakness in AI suppliers and how elevated debt yields are squeezing expensive valuations across North American trading desks.

What Is Confirmed

Surging energy prices and elevated government borrowing costs directly rattled equity markets. Brent crude traded up 0.2 per cent to US$91.02 per barrel, having surged from US$72.87 before hostilities involving Iran began, keeping inflation fears firmly elevated. Meanwhile, the 30-year U.S. Treasury yield touched a 19-year high, while the 10-year yield settled at 4.70 per cent, significantly higher than its 3.97 per cent level prior to the geopolitical escalation.

The sell-off hit AI infrastructure and semiconductor suppliers particularly hard:

• Amkor Technology (NASDAQ:AMKR) dropped 11.8 per cent to $54.75 per share.
• Teradyne (NASDAQ:TER) dropped 10.5 per cent, leading decliners alongside Coherent (down 11 per cent) and Ciena (down 10 per cent).
• Kulicke and Soffa (NASDAQ:KLIC) fell 11.7 per cent, while Micron Technology shed 7 per cent.
• Heavyweights Nvidia and Broadcom retreated 2.3 per cent and 3.2 per cent, respectively.
• Broad benchmarks declined as the S&P 500 fell 53.30 points to 7,691.76, the Dow Jones Industrial Average dropped 116.38 points to 53,343.40, and the Nasdaq sank 355.20 points to 26,289.71.

with little sign of a U.S.–Iran deal, investors priced in a more extended closure of the Strait of Hormuz and a longer stretch of higher oil.

What Is Unconfirmed

The timeline for resolving diplomatic negotiations between the United States and Iran remains completely undisclosed, leaving the duration of shipping disruptions in the Strait of Hormuz unknown. In corporate developments, Bloomberg reported preliminary second-quarter revenue of over $11.5 billion for AI lab Anthropic, though reports noted the figures remain subject to potential revisions before final verification.

The Bigger Picture

The market retreat reflects a structural tension between expensive tech multiples and high borrowing costs. As High Frequency Economics founder Carl Weinberg explained on CNBC, massive AI infrastructure borrowing is directly competing with governments for savings, pushing sovereign bond yields higher and feeding back into compressed stock valuations. While defensive areas such as energy and utilities attracted capital, the iShares Semiconductor ETF lost roughly 5.4 per cent in a single session.

Latest Status

Global equity futures stabilized into Wednesday morning following the sharp multi-asset pullback. Market participants continue monitoring crude oil stability around the US$91 mark alongside Treasury yield movements to gauge whether defensive sector rotations will persist across upcoming North American sessions.

Frequently Asked Questions

Why did technology and semiconductor stocks fall so sharply?

Rising long-term bond yields increase discount rates on future corporate earnings, making high-multiple tech valuations more expensive to justify. Concurrently, elevated borrowing rates raise the actual cost of financing large-scale data center expansions.

How are crude oil prices affecting stock markets?

Brent crude holding above US$91 per barrel fuels persistent inflation worries, which in turn prevents central banks and bond markets from lowering interest rate expectations.

Which companies saw the largest single-day drops?

Major semiconductor equipment and optics firms led losses, including Amkor Technology falling 11.8 per cent, Teradyne sliding 10.5 per cent, and Coherent dropping 11 per cent.

Did major market indexes recover following the drop?

The S&P 500 closed down 0.7 per cent, marking its third consecutive loss, while the Nasdaq composite fell 1.3 per cent before futures leveled off early Wednesday morning.