Investing.com - Elon Musk used Tesla's Q2 2026 earnings call on Wednesday evening to publicly thank Micron Technology for providing a "very significant allocation" of memory chips on "reasonable terms" at a moment when he described memory pricing as "pretty insane."

Micron (NASDAQ: MU) shares rose 3.1% in intra-day action Thursday following the comments as investors interpreted the endorsement as confirmation of a deepening strategic supply relationship. The move is in stark contrast to Tesla, which is down 14.3% following an earnings miss, negative free cash flow and weak auto margins.

Musk's exact words, as captured in an Investing.com earnings-call transcript, left little ambiguity about the significance of the arrangement: "I actually I'd also like to thank Micron for giving us the memory allocation. They're going to make some very tough decisions on memory allocation, and we really appreciate Micron making room for Tesla in the years to come and giving us actually a very significant allocation on reasonable terms given the pretty insane pricing of memory these days."

The phrase "years to come" is doing considerable work in that sentence. TrendForce reported on Thursday that Micron's Strategic Customer Agreements — long-term contracts that lock in both pricing and supply volumes for three to five years — already cover roughly 20% of Micron's DRAM output and about one-third of its NAND volumes. Tesla appears to be joining an expanding roster of AI-driven SCA customers that, according to TrendForce, includes GM, Ford and Anthropic. Micron has not publicly confirmed the terms, duration, or volume of any Tesla-specific deal, and it is not yet clear whether the arrangement constitutes a formal multi-year SCA or a shorter-term commitment.

The broader context makes the supply partnership strategically important for both companies. Tesla is in the midst of a capital-expenditure cycle that Musk described as targeting AI compute, Optimus humanoid robots, Robotaxi fleets and semiconductor manufacturing, all of which are heavy consumers of memory chips. On the call Musk echoed language that Apple CEO Tim Cook has used to describe the memory crunch, calling it "the biggest price jump in anything I've ever seen." That framing signals the shortage is not a transient procurement headache but a systemic constraint on Tesla's expansion timeline.

Musk also addressed Tesla's broader spending ambitions directly: "This year is an extremely huge year for capital expenditures, but I am confident that all the projects we invest in will generate incredible returns. This could be the best return on capital expenditures we have ever seen."

The Micron halo extended to the broader memory sector in overnight trading on July 22. SanDisk, Western Digital and SK Hynix each gained about 2%, while the Roundhill Memory ETF (DRAM) rose 2.6%.

In addition to Musk's Micron endorsement, a separate surge in Alphabet's capital expenditure guidance disclosed overnight is adding to the positive sentiment.