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Posted on November 6, 2026
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A sharp sell‑off in AI and tech stocks sent volatility soaring—VIX surged to ~28, its highest since March, while AI‑linked credit stress intensified as CoreWeave’s 5‑yr CDS blew past 1,100 bps. High‑yield bond spreads widened, and investors rushed into safe havens like Treasuries and the dollar.
By Harry Robertson and Dhara Ranasinghe
LONDON, Nov 6 (Reuters) – A rout in technology stocks as confidence in the AI trade falters could test the resilience of global financial markets from New York to Taipei.
The tech-heavy Nasdaq 100 rose nearly 2% on Friday, clawing back some of Thursday’s more than 6% plunge – but traders remain on edge.
Policymakers have long warned of the risks from an AI boom unraveling. Investors and regulators are keeping a close watch on market stress indicators, with some flashing amber, although not yet red.
Here’s a look at how key measures are faring:
Wall Street’s fear gauge, the VIX index of US stock market volatility, rose to over 28 on Thursday, its highest since late March. It was holding close to that level on Friday.
The increase is relatively contained compared to the post-April 2025 “Liberation Day” market jump and the August 2024 market selloff.
Still, the VIX has surged more than 40% this week.
The European equivalent hit its highest level since May on Friday.
“It’s still early days,” said Idanna Appio, a portfolio manager at First Eagle Investments. “My concern would be if we see more spikes in volatility, more stress, real issues with the ability to access markets. Those will be the things that…I’ll be watching.”
Perhaps the biggest harbinger of potential trouble in the AI space is a surge in insurance protection against a debt default.
The cost of insuring debt issued by neocloud firm CoreWeave has spiked into distressed territory, with five-year credit default swap (CDS) spreads surging past 1,000 basis points to record highs. It has become a barometer of investor anxiety over AI.
Spreads on credit default swaps for SpaceX and Intel have also jumped this week.
The premium investors demand to hold US high yield corporate credit, known as junk bonds, has risen to its highest since the Liberation Day ructions as traders cool on riskier assets.
In the riskiest parts of the market, for companies rated CCC or lower, that premium is trading at around its highest since 2020, according to ICE BofA indices.
A flight to safe havens is a clear sign of increased market angst, although daily moves are also relatively modest.
US 10-year Treasury yields have fallen 50 bps from peaks above 5% hit last month on concerns about high debt, rising inflation and competition for capital as tech firms ramped up bond sales.
Currency markets were relatively muted, but there were some signs of investors seeking the US dollar, which was up 0.6% as of 1500 GMT on Friday.
Three-month euro cross-currency basis swaps, or the relative premium for swapping foreign currencies into dollars, briefly touched -8 bps on Thursday, the lowest since late 2023, signaling increased demand for dollar funding. It had recovered slightly on Friday to around -6 bps.
BofA’s Flow Show report on Friday said cash funds saw a $140 billion inflow in the week to Wednesday, the seventh biggest on record.
Bond markets are so far showing no signs of the sort of stress they came under during the COVID-19 pandemic or around the Liberation Day tariffs.
The closely watched MOVE index, which tracks volatility in the US Treasury market, hit a six-month high in October but has since slipped back.
Other bond-market measures such as US swap spreads, which can indicate funding and liquidity stress, have also remained calm.
(Reporting by Dhara Ranasinghe and Harry Robertson; Additional reporting by Gertrude Chavez-Dreyfuss and Alun John; Editing by Karin Strohecker and Kirsten Donovan)
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