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Michael Burry launches paywalled Substack after de-registering his hedge fund

“The Big Short” investor Michael Burry just launched a new Substack called Cassandra Unchained, after recently de-registering Scion Asset Management from the SEC. One of his first posts takes aim at Nvidia and the topic of the wider AI “bubble.”

Earlier this month, Burry teased on X that he’d be “on to much better things” on November 25. Exactly where his Substack — which he unveiled last night with letters recalling his past warnings, from shorting Amazon in 2000 to Greenspan brushing off a housing bubble in 2005 — fits into that remains to be seen.

The post getting the most attention so far lays out why he sees the AI boom as a bubble rooted in “supply-side gluttony,” Business Insider reports. Burry argues that today’s AI cycle mirrors the dot-com period, when markets were also led by highly profitable giants — the so-called “Four Horsemen” (Microsoft, Intel, Dell, Cisco). The problem back then, according to Burry, was “catastrophically overbuilt supply and nowhere near enough demand,” a dynamic that’s “just not so different this time,” with Microsoft, Google, Meta, Amazon, and Oracle, plus startups like OpenAI, driving massive build-outs that may outstrip real demand.

Burry singles out Nvidia as the modern Cisco, the company at the center of the 2000 dot-com bubble that eventually plunged 78% in the crash. In a recent X post, he also separately accused major tech firms of understating depreciation on their computing hardware, saying it “artificially boosts earnings.”

Earlier this month, Burry teased on X that he’d be “on to much better things” on November 25. Exactly where his Substack — which he unveiled last night with letters recalling his past warnings, from shorting Amazon in 2000 to Greenspan brushing off a housing bubble in 2005 — fits into that remains to be seen.

The post getting the most attention so far lays out why he sees the AI boom as a bubble rooted in “supply-side gluttony,” Business Insider reports. Burry argues that today’s AI cycle mirrors the dot-com period, when markets were also led by highly profitable giants — the so-called “Four Horsemen” (Microsoft, Intel, Dell, Cisco). The problem back then, according to Burry, was “catastrophically overbuilt supply and nowhere near enough demand,” a dynamic that’s “just not so different this time,” with Microsoft, Google, Meta, Amazon, and Oracle, plus startups like OpenAI, driving massive build-outs that may outstrip real demand.

Burry singles out Nvidia as the modern Cisco, the company at the center of the 2000 dot-com bubble that eventually plunged 78% in the crash. In a recent X post, he also separately accused major tech firms of understating depreciation on their computing hardware, saying it “artificially boosts earnings.”

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Albemarle and fellow lithium miners jump on Zimbabwe export ban

Lithium miners Albemarle Corp., Lithium Argentina, Lithium Americas, and Sociedad Quimica y Minera are all rising in early trading on Wednesday after Zimbabwe suspended its export of all raw minerals and lithium concentrates.

The latest move accelerates a ban that was reportedly expected to come into effect starting January 2027, and will remain in place until further notice. As the top African producer of the metal, Zimbabwe exported some 1.13 million metric tons, or $514 million worth, of lithium-bearing spodumene concentrate in 2025.

Zimbabwe’s mines minister said the ban would remain in effect until companies comply with government requirements, per Bloomberg.

The ban adds further supply pressure into a market that’s already seen prices squeeze higher, with benchmark lithium futures roughly doubling since the end of October 2025. That’s spurred the shares of companies like Albemarle, which has gained more than 90% over the same time frame — a rare bright spot in an EV supply chain that’s generally been pretty depressed recently.

Some Wall Street analysts have gotten more bullish on the sector, too. Albemarle scored an upgrade from Bank of America analysts earlier this month, who cited the lithium market’s improvement in structural fundamentals, as Chinese supply restrictions combined with growing demand for utility-scale battery storage applications provide further support for lithium prices. Futures prices for lithium carbonate remain above $18 per kilogram, having been as high as $21 per kilogram in January.

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Joby announces plans to offer air taxi rides in the Uber app in Dubai

Air taxi maker Joby Aviation is climbing in premarket trading on Wednesday following its announcement that Uber Air (a planned partnership to add Joby’s air taxis as a transport option in the Uber app) will launch in Dubai later this year.

Joby shares are up more than 6%.

According to its press release, booking an air taxi through the Uber app will also include an Uber Black pickup and drop-off.

First, Joby will need its air taxis certified for commercial service in the UAE. Last February, the company said it expected to be flying passengers in the country “in late 2025 or early 2026,” though that timeline appears to have been delayed. According to a report by The National in November, UAE authorities said they expect certification in the third quarter.

The company’s progress in the US is slower, though it entered the final stage of its FAA certification process last year and is expected to provide an update to that timeline when it reports its fourth-quarter earnings after the market closes Wednesday.

The announcement marks a deepening of Joby and Uber’s partnership. Last year, Uber said it would add Joby’s Blade helicopter and seaplane services to its ride-hailing app.

According to its press release, booking an air taxi through the Uber app will also include an Uber Black pickup and drop-off.

First, Joby will need its air taxis certified for commercial service in the UAE. Last February, the company said it expected to be flying passengers in the country “in late 2025 or early 2026,” though that timeline appears to have been delayed. According to a report by The National in November, UAE authorities said they expect certification in the third quarter.

The company’s progress in the US is slower, though it entered the final stage of its FAA certification process last year and is expected to provide an update to that timeline when it reports its fourth-quarter earnings after the market closes Wednesday.

The announcement marks a deepening of Joby and Uber’s partnership. Last year, Uber said it would add Joby’s Blade helicopter and seaplane services to its ride-hailing app.

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Workday’s miserable year continues after soft revenue guidance sinks the stock

Workday slumped nearly 9% in after-hours trading Tuesday, and continued to languish in the red in early trading on Wednesday, after the HR and finance software company issued a lighter-than-expected subscription revenue outlook.

For the quarter ended January 31, subscription revenue — which makes up over 90% of total revenue — rose 15.7% year over year to $2.36 billion, in line with analysts’ estimates, while adjusted earnings per share of $2.47 topped the $2.32 expected.

However, guidance for the coming quarter, ending April 2026, came in a hair below analysts’ estimates, as did projections for fiscal 2027 subscription revenue of $9.93 billion to $9.95 billion, below the roughly $10 billion estimate on Wall Street.

The outlook comes amid broader AI-driven anxiety among software-as-a-service companies, with investors questioning whether generative-AI tools could displace traditional software vendors.

On the earnings call, CEO Aneel Bhusri pushed back on this narrative, arguing Workday’s domains are really, really hard to build. The company has been prioritizing investment in agentic AI, with its annualized revenue from AI products now topping $400 million.

Still, shares are now down ~45% year to date, marking the stock’s sharpest annual decline since going public in 2012. All told, shares are now 61% down from their all-time high.

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President Trump announces data center electricity deals in State of the Union

President Donald Trump said during Tuesdays State of the Union address that hes struck agreements with tech companies to pay more for electricity in areas where they build data centers.

The rate payer protection pledges are intended to insulate consumers from higher bills in regions where new, power-hungry data centers are built. The White House earlier told Politico that the plan meant that tech giants would pay their own way and offset their demand for power causing electricity bills for all ratepayers to increase.

Some tech companies are already trying to get out in front of the publics negative perception of their surging electricity use, and Trumps criticism of it. In January, Microsoft committed to paying up for its data center electricity use. That move came after criticism from the president. As part of the plan, Microsoft said it would ask utilities and public commissions to charge it rates high enough to cover the costs of both data center installation and usage, and support two-tier pricing systems where “Very Large Customers” (like data centers) get charged higher prices.

Coming into the end of 2025, utilities with a footprint on the country’s largest utility grid — the PJM Interconnection, which serves vast swaths of the Eastern Seaboard and Great Lakes region — like Talen Energy, Constellation Energy, and Vistra saw their share prices surge as electricity auction prices hit record highs. So far in 2026, however, that trade has largely reversed.

Some tech companies are already trying to get out in front of the publics negative perception of their surging electricity use, and Trumps criticism of it. In January, Microsoft committed to paying up for its data center electricity use. That move came after criticism from the president. As part of the plan, Microsoft said it would ask utilities and public commissions to charge it rates high enough to cover the costs of both data center installation and usage, and support two-tier pricing systems where “Very Large Customers” (like data centers) get charged higher prices.

Coming into the end of 2025, utilities with a footprint on the country’s largest utility grid — the PJM Interconnection, which serves vast swaths of the Eastern Seaboard and Great Lakes region — like Talen Energy, Constellation Energy, and Vistra saw their share prices surge as electricity auction prices hit record highs. So far in 2026, however, that trade has largely reversed.

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