Weekly Financial Market Summary

Weekly Market Notes — October 11–18, 2026 Weekly Market Intelligence · Compiled by Albert Tang · Issue date: October 18, 2026 ℹ️ NOT FOR FINANCIAL ADVICE — FOR INFORMATIONAL AND ENTERTAINMENT USE ONLY Market Snapshot (Friday, Oct 16 close) Instrument Level Week S&P 500 7,659.44 ▼ 2.0% Dow 52,002.41 ▲ 0.7% Nasdaq Composite 26,140.03 ▼ 4.5% Russell 2000 2,721.37 ▼ 3.0% Brent Crude $109.86 ▲ 4.9% 10-Yr Yield ~5.10% ▼ ~14 bps Bitcoin ~$82,700 (Fri. AM) ▲ 0.6% Weekly Overview The market tried to price a growth scare and an inflation scare at once, and it did not go well. September's CPI came in at 3.7% year over year against a 3.6% forecast, and producer prices jumped 1.3% for the month. The 10-year Treasury yield spiked to roughly 5.33% intraday on Wednesday, its highest since 2002, then reversed to about 5.05% Thursday as a separate panic hit AI-linked credit: CoreWeave lost about 22% of its value in two sessions as yields on its own debt topped 15%, dragging Oracle, Nebius and Iren lower on fears the AI buildout is funded by debt its cash flow cannot yet support. The Nasdaq fell 4.5% for the week, its worst since spring, even as the Dow eked out a 0.7% gain on healthcare and financial rotation. Bank earnings opened mixed — Goldman and Citigroup beat estimates, Wells Fargo and JPMorgan disappointed — while oil would not stand down: Brent crossed $110 for the first time since May as Iranian strikes on Hormuz shipping, Houthi attacks on Saudi energy infrastructure, and the collapse of a Russia-Ukraine energy truce arrived in the same week. The tension: the Fed now faces a credit wobble and a fuel-driven inflation spike at once, with no clean tool for either. Estimated reading time: 8–9 minutes Headline 01 of 06 · AI Credit Fears Slam CoreWeave, Drag the Nasdaq Into Its Worst Week Since Spring AI Infrastructure · Credit Markets · CoreWeave · Semiconductors The AI trade's financing side cracked this week. CoreWeave shares fell nearly 15% on Tuesday, then another 8.3%…