Tariff uncertainty, AI initiatives and Asian data shape Sunday news

U.S. markets were closed Sunday. News centered on reports of a broader U.S. tariff plan, Apple's AI-health project, OpenAI and Microsoft backing MCP, SK Hynix's $9 billion NAND acquisition, and Asian data showing China's manufacturing PMI at 50.5 and Japan's industrial production up 2.5%.

Published Sep 13, 2026

QQQ: 0.00%
SPY: 0.00%
QQQ − SPY: 0.00%

What shaped the session

Tariff policy uncertainty

A report said the White House was considering a broader, higher-rate tariff plan ahead of the April 2 announcement.

AI platforms and health

Apple was reported to be developing an AI doctor under its Mulberry Project, while OpenAI and Microsoft backed the MCP interoperability standard and Google hinted at possible support.

Semiconductor consolidation

SK Hynix completed its $9 billion acquisition of Intel's NAND flash business, taking full control of the operation.

Asian macro readings

China's March manufacturing PMI was 50.5 versus 50.4 expected and 50.2 prior, while Japan's preliminary February industrial production rose 2.5% versus 1.9% expected and a 1.1% prior decline.

Key news

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