MarketCatalyst

Daily recaps, research and guides to how the market actually works.

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MongoDB Plunges 21% Premarket as CEO Leaves for Meta on the Eve of Investor Day

MongoDB shares plunged about 21% premarket after CEO CJ Desai left for Meta, with former CEO Dev Ittycheria returning as interim chief the morning before the company's Investor Day.

DDesk28 Sept 2026 · 09:11 ET3 min read
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News

China May Let Alibaba, ByteDance Buy Nvidia's New RTX Pro 5500 Chips

China's tech regulator has reportedly signaled it may approve Alibaba and ByteDance purchases of Nvidia's new RTX Pro 5500 workstation chip — a potential workaround to ongoing export restrictions, though unconfirmed by Reuters or the companies involved.

DDesk27 Sept 2026 · 16:41 ET2 min read
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News

U.S. and China Agree to $30 Billion in Reciprocal Tariff Cuts

The U.S. and China agreed to cut tariffs on $30 billion of goods each way at this week's summit, plus new Chinese coal purchases — but rare earths remain unresolved.

DDesk26 Sept 2026 · 13:28 ET1 min read
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News

U.S. and China Agree to AI Incident Channel and "Super Intelligence" Dialogue

The White House says the U.S. and China agreed at the Trump-Xi summit to launch a "Super Intelligence" dialogue and a bilateral channel for AI incidents — though key details on what would trigger it remain unspecified.

DDesk26 Sept 2026 · 13:27 ET2 min read
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News

Trump Rejects Iran's Latest Proposal to Reopen the Strait of Hormuz

Trump said Saturday he rejected an Iranian proposal to reopen the Strait of Hormuz and resume nuclear talks within a week, even as U.S. officials described mediated discussions with Tehran as ongoing and "positive and constructive."

DDesk26 Sept 2026 · 13:18 ET3 min read
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