Investors are demanding hard evidence that the hundreds of billions poured into artificial intelligence infrastructure can generate real returns, and this week’s earnings slate will test that patience severely.

Microsoft (NASDAQ: MSFT), Alphabet (NASDAQ: GOOG), and Amazon are the marquee names reporting this week, with each company facing an audience no longer willing to reward vague promises of future AI payoffs.

SPI Asset Management’s Stephen Innes captured the mood bluntly, warning that “Microsoft, Alphabet and Amazon are about to walk on stage, and this is not one of those quarters where a company can simply beat the number, raise the guidance by a whisker and expect applause.”

Innes added that investors are demanding clarity on whether the massive capital commitments are productive, asking whether “the billions going into the compute buildout are building a durable earnings machine or just a shinier version of the same old capex furnace.”

The pressure builds on a sector already under strain, with AI-linked firms struggling throughout October as doubts about the sustainability of the investment boom that drove record stock market highs earlier this year have deepened.

Results from Tesla and Meta last week did little to calm nerves, instead amplifying concerns about runaway AI spending and dragging broader markets lower heading into the weekend.

All three major Wall Street indexes closed in negative territory on Friday, and Asian markets opened the week on the back foot, with Seoul shedding more than one percent in a session watched closely as a barometer of global AI sentiment.

Tokyo, Singapore, Manila, and Jakarta also posted losses, while chipmakers SK hynix, Samsung, Kioxia, and Advantest were among the session’s hardest-hit stocks alongside Japan’s SoftBank.

Rising interest rates and elevated bond yields are compounding the sector’s difficulties, with Innes noting that “the AI complex remains under a microscope ahead of what may be the most important stretch of earnings season so far.”

Oil prices added another layer of unease, retreating more than one percent on Monday after surging over three percent on Friday, driven by supply anxieties tied to the Middle East and Ukraine conflicts as the northern hemisphere enters winter.

Geopolitical risk sharpened further after President Donald Trump told Fox News on Sunday, “I have a decision to make: Do I finish it off, which would be very easy to do, or do I make a deal? That’s all,” fueling speculation about potential escalation against Iran following Tuesday’s midterm elections.

A third aircraft carrier group has been dispatched to the region, while American staffing levels there have simultaneously been reduced, signals that traders are watching carefully for their implications on oil supply chains.

West Texas Intermediate crude fell 1.9 percent to $101.27 per barrel, while Brent North Sea crude dropped 1.6 percent to $114.90 per barrel as markets digested the competing pressures.

Central bank decisions from the Federal Reserve, the European Central Bank, and the Bank of Japan are also scheduled this week, with the Fed widely expected to hold rates steady following last month’s increase.

Karsten Junius, chief economist at Bank J. Safra Sarasin, wrote that “with market-based measures of inflation expectations well anchored and financial conditions tightening, Fed Chair (Kevin) Warsh can afford to remain patient.”

Junius nevertheless forecast further tightening ahead, projecting a 25-basis-point rate increase in December followed by three additional quarterly hikes next year, as inflation continues to run well above the Fed’s two percent target.

Not all regional markets surrendered ground, with Hong Kong’s Hang Seng gaining 0.5 percent and Shanghai, Sydney, Mumbai, and Bangkok each edging higher against the broader downward trend.

The Dow Jones Industrial Average closed Friday’s session down 1.2 percent at 52,215.16, while London’s FTSE 100 shed 0.3 percent to finish at 10,690.36, extending a week of broad-based selling pressure across developed markets.