The morning coffee tastes bitter in the Square Mile today as Asian tech stocks cratered overnight, following a savage selloff on Wall Street that wiped out billions in market capitalisation. The Hang Seng Tech Index plunged 4.2%, while Japan's Nikkei 225 shed 3.8%, with semiconductor and software stocks bearing the brunt. London markets are now bracing for the inevitable contagion as the FTSE 100 opens lower, with the tech-heavy FTSE 350 Technology Index expected to fall sharply.
This is a classic risk-off rotation, and the numbers tell a grim story. The Nasdaq 100, which had rallied 12% in just three weeks on the back of AI euphoria and dovish Fed whispers, reversed course violently, dropping 3.1% in a single session. The trigger? A sudden spike in US Treasury yields after stronger-than-expected jobs data reignited fears of prolonged tight monetary policy. The 10-year yield jumped 15 basis points to 4.38%, a level that historically chokes off speculative froth.
For Asian markets, this is a double blow. They had been riding the coat-tails of US tech optimism, with many investors piling into high-beta names like TSMC, Samsung, and Tencent. Now, as the air hisses out of the balloon, the exit doors are proving narrow. Capital flight is the order of the day, with the yen and won weakening as foreign investors scramble for the exits. The MSCI Asia ex-Japan index has shed 2.5% in early trade, and the momentum is decidedly negative.
What does this mean for London? The FTSE 100, already weighed down by a stagnant UK economy and sticky inflation, will face a headwind from the technology sector. But let's be clear: the index has a lower tech weighting than its US counterparts, so the direct impact may be muted. However, the contagion effect is real. Sentiment is a fragile creature, and when risk appetite evaporates in New York and Tokyo, London tends to catch a cold. The mid-cap FTSE 250, with its higher exposure to financials and growth stocks, could take a bigger hit.
More importantly, this selloff underscores the fragility of the current market rally. We have been warning for weeks that the bull case rested on a fragile foundation of rate cut expectations and AI hype. The reality is that central banks remain hawkish: the Fed is still talking tough on inflation, and the Bank of England is in no mood to ease until services CPI shows sustained decline. The market's recent gains were essentially borrowed from the future, and now the bill has come due.
Fiscal responsibility is another casualty. Governments on both sides of the Atlantic are borrowing at ever-increasing costs, and this yield spike raises the servicing burden on already bloated debt piles. The gilts market is particularly vulnerable: with UK inflation still above 4% and GDP growth anaemic, the risk of a 'Liz Truss moment' is non-zero. The Treasury's latest bond auction saw weak demand, a canary in the coal mine that investors are demanding a higher risk premium for holding UK debt.
So what should investors do? The temptation is to buy the dip, but this feels more like a structural repositioning than a temporary blip. The breakdown of the recent uptrend in US tech signals a loss of faith in the growth narrative. Earnings season revealed cracks: margins are shrinking, guidance is cautious, and the capex cycle is peaking. The AI story, while real in the long term, is becoming oversold as a panacea.
For London, the best defence is a good offence: stick to quality, focus on cash flows, and avoid the leveraged plays. Defensives like utilities, healthcare, and consumer staples may offer relative safety. But in a market that has been pricing in a soft landing that looks increasingly improbable, the risk of further downside is high.
As the opening bell approaches, the mood is one of grim acceptance. The rally was a mirage, and the oasis has turned to sand. The Bank of England will be watching closely, but they have little ammunition left. Contagion is rarely contained, and today, London will pay the price for the excesses of its Asian and American counterparts.
