On the last trading day of October 2026, Intel plunged 28.6% — its worst day in 40+ years — and the SOX chip index tumbled over 7%, ending AI capex's 'free pass'. Haven demand drove Treasuries higher, with the 10-year heading for its biggest monthly drop in nearly three years; Korea's KOSPI fell 3.5% and triggered a sidecar.

Alphabet's cloud revenue doubled to $30.7bn, yet the stock fell 12.6% - its worst day in 22 years - erasing over $500bn. Capex hit $51.4bn, free cash flow was negative for a second straight quarter, and search ads grew just 12%. The market no longer rewards spending itself; it prices AI capex by the slope of returns. Microsoft's Azure, accelerating to 48%, was spared.

On October 22 French 5-year CDS broke through 100bp and the 10-year OAT yield rose above the equivalent US Treasury for the first time in 13 years - on the same day the US 10-year fell 18bp to 4.965% on haven buying. Capital is not fleeing duration; it is re-ranking what counts as “safe”. When a core sovereign's fiscal sustainability is questioned, sovereign risk premia replace the policy rate as Europe's anchor.

Fitch expects developed-market government debt to top $75 trillion by year-end, with the top ten economies owing $68.5 trillion, while annual interest on their traded sovereign bonds has passed $3.3 trillion - more than global spending on AI, defence or clean energy individually. With the US 10-year at 5.36%, French yields near 5% and the UK 30-year above 6%, the sovereign rout is turning from a rate problem into a credit problem.

On October 16 the Nasdaq fell 4.48% for its worst week in four months and the Philadelphia Semiconductor Index capped an eighth straight decline, the longest since 2008 — yet US chip output is up nearly 20% year on year. Capital rotated into Dow financials and energy, low-AI European equities and Treasuries as a haven.

On October 9 the three main A-share indices traced a dip-then-rebound session with turnover rising to RMB 1.92trn. A return to expansion in the September manufacturing PMI (50.1%), resilient holiday consumption, an improving dividend ecosystem and a single-day RMB 17.9bn net inflow into equity ETFs form four supports; with 83.78% of early Q3 reports positive, the earnings factor is replacing valuation expansion as the fourth-quarter pricing main line.

The Fed’s September minutes released on Oct 7 named geopolitics-driven oil prices and the AI investment surge as two new inflation sources; the IMF warned the same day that high oil may last into 2027. With Brent above $102, the 10-year Treasury yield hitting a 2002 high of 5.349%, and gold ETFs posting a record $31bn quarterly inflow, the centre of gravity of inflation is shifting from demand to supply and capex.

Reports put OpenAI's annualized revenue near $50 billion, below the ~$70 billion that had circulated, reigniting doubts about AI capex sustainability. The Nasdaq 100 fell 1.39% and the SOX index slid 3.4%, while massive tech debt issuance surfaced a scramble for capital.

A $70 billion 5-year Treasury auction tailed by 3.1 basis points, forcing primary dealers to absorb 15.8% of the issue; with the Treasury's quarter-end cash balance surging and the Fed pausing its reserve-management purchases, private-sector appetite for long-duration assets has hit a wall.

Under the 2026 Policy Address and a wave of September HKMA–SFC moves, Hong Kong is accelerating its digital-asset hub: 24/7 on-chain settlement by year-end, a live HKD stablecoin pilot, and world-leading tokenized assets and digital bonds.