GoAI Market Wrap – 18th August

Daily Market Brief · Tuesday, August 18, 2026

U.S. Market Close

GoAI Sentiment Index

Key Headlines

Market Analysis

U.S. equities finished modestly lower on Monday as capital continued to favor AI-compute and resource names, while most other groups weakened. The S&P 500 fell 0.52% to 7,745.06, the Nasdaq Composite slipped 0.32% to 26,644.91, and the Dow Jones Industrial Average declined 0.51% to 53,459.78.

Market breadth was notably soft: only 133 S&P 500 constituents advanced while 367 declined, underscoring the narrow leadership in AI infrastructure and resources linked to Middle East risks and U.S. tariff themes.

Optical networking, memory, and semiconductor-equipment leaders again drove the compute trade. Coherent rose 7.79%, Credo gained 8.82%, Marvell added 5.54%, Lumentum climbed 4.62%, Corning advanced 4.35%, and Applied Optoelectronics rose 3.07%. Nvidia said last Friday that its Spectrum-X Ethernet silicon-photonics switches had entered full production.

The newest compute catalyst was a report that Anthropic’s annualized revenue run rate had topped $65 billion. Nvidia also agreed with OpenAI and SoftBank-backed SB Energy to provide phased residual-value guarantees for a dedicated Ohio data center. The first 4.25GW phase carries a $105 billion guarantee, with Nvidia able to support an additional 3.8GW.

The agreement boosted memory and equipment names: SanDisk jumped 8.88%, Micron gained 4.13%, SK Hynix rose 3.04%, and Kioxia’s ADR surged 13.44% alongside Japan’s market. Teradyne and Applied Materials each added more than 5%.

Geopolitical risk weighed on the wider market. With the U.S.-Iran memorandum of understanding expiring without visible progress in talks, President Trump said he was not seeking an extension and renewed threats of military action. Rising oil prices pushed the 30-year Treasury yield more than four basis points higher, above 5.3% for the first time since June 2007, adding intraday pressure to equities.

J.P. Morgan’s strategy team said this week’s Federal Reserve minutes could offer an important guide to policy behavior as official communication becomes less frequent. The team added that relatively soft macro data could allow technology momentum to persist into Nvidia’s earnings next week.

Key Events

Commodities

Forex

Sector Intelligence

AI NETWORKING & OPTICAL

Key Drivers: AI networking and optical names led the market as data-center spending accelerated. Credo gained 8.82% and Marvell rose 5.54%, alongside broad strength in optical interconnect and Ethernet infrastructure.
Outlook: Nvidia’s expanded data-center support and rising demand for high-speed connectivity underpin the group, though valuations remain sensitive to hyperscaler capex execution.

SHIPPING & LOGISTICS

Market Dynamics: The Baltic Dry Index rose 0.52% to 2,878 on Aug 17, extending its rebound for a second session. Capesize climbed 1.2% to 4,590 and Supramax added 0.4% to 1,628, while Panamax fell 1.0% to 2,206. Drewry’s World Container Index last stood at $4,339 per 40ft container, up 1.0% on Aug 13.
Outlook: Firm capesize and supramax activity supports dry bulk, while continued Panamax weakness points to an uneven recovery. Container pricing remains sensitive to carrier capacity discipline and geopolitical rerouting.

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