Key points
- Trump posted about Micron (MU) at 2:31 p.m. ET Thursday. The stock rose 0.4% in two minutes, then gave it back.
- It is his third Micron post since July 1. Shares closed down 10.6% after the first and 4.3% after the second.
- The $10 billion research lab he cited was announced a week ago, on August 20. MU rose 4% that day.
President Donald Trump posted about Micron (MU) on Truth Social at 2:31 p.m. ET on Thursday, calling it one of the "HOTTEST" companies in the world. The stock went from about $910 to $914.19 over the next two minutes, then traded back near $912 by 2:37 p.m. It was his third Micron post since July 1. Shares closed down 10.6% on the day of the first one and fell 4.3% the session after the second. As of mid-afternoon Thursday, Micron traded near $919, down about 2%.
"GREAT NEWS! Micron, one of the 'HOTTEST' Companies in the World, just announced a MASSIVE 10 BILLION DOLLAR Investment in new Research Labs right here in America," the post read. "They are keeping us at the absolute forefront of A.I. and Advanced Computing!" It closed with "Congratulations to Micron's fantastic CEO, Sanjay Mehrotra. We are strengthening our Economy and WINNING BIG!"
The announcement he cited is a week old. Micron unveiled Micron Research Labs on August 20: $10 billion over the next decade, headquartered in Boise, with a flagship campus breaking ground in 2027. The company framed it as an addition to the more than $250 billion it has separately committed to manufacturing and research across the United States. MU rose 4% to $974.33 the day of that announcement. It has since given back those gains and more, part of an August slide in memory stocks that has come even as contract prices set records.
Thursday was already a down day before the post. Micron opened at $967.71, up 3.1% from Wednesday's close of $938.40, and was trading below that close within the first half hour. By the time the post landed it was near $910.
The two July posts
On July 1 at 12:19 p.m., Trump posted: "BIG NEWS! Micron, a truly GREAT American Company, and one of the 'HOTTEST' anywhere in the World, has announced a HISTORIC $250 MILLION Investment in TRUMP ACCOUNTS." Micron closed at $1,032.28 that day, down 10.6%.
On July 10 at 7:35 p.m., after the close, he wrote that Micron was accelerating its US spending to a "MASSIVE 250 BILLION DOLLARS." Sanjay Mehrotra posted the same evening that "because of his leadership and policies," Micron was ahead of schedule on that spending. The next session, July 13, the stock fell 4.3% to $937.00.
| Post | What it said | Micron (MU) |
|---|---|---|
| July 1, 12:19 p.m. | "$250 MILLION Investment in TRUMP ACCOUNTS" | Closed down 10.6% |
| July 10, 7:35 p.m. | "MASSIVE 250 BILLION DOLLARS" in US spending | Fell 4.3% the next session |
| August 27, 2:31 p.m. | "10 BILLION DOLLAR" research labs | Down about 2% in afternoon trading |
Mehrotra, the CEO congratulated in Thursday's post, has also been selling shares under a preset schedule. On July 24, he sold 40,000 shares for $37.3 million. It was his fourth sale of the same size since May and was executed under a 10b5-1 trading plan signed January 30.
Who gets the posts first
Trump Media launched its Truth API on August 1. Wall Street firms are paying up to $100,000 for early access to Trump's posts through it, the company told CNN in August.
Trump's own filings show a position in the stock. His 2025 financial disclosures listed between $1.67 million and $6.65 million in Micron shares. His latest disclosure, covering the first half of 2026, showed about 7,000 stock trades in six months. CNN reported in July that Trump promoted several companies on Truth Social within days of buying their stock.
In the August 20 release, Mehrotra, Micron's chairman, president, and CEO, said: "The decisions we make today will determine who leads the AI economy of tomorrow, and America's AI future will be built on American-made memory."
Sources
- Truth Social posts by Donald Trump, July 1, July 10, and August 27, 2026
- Micron Technology press release, "Micron Unveils Micron Research Labs," August 20, 2026 (GlobeNewswire)
- CNN, "Trump Media says Wall Street firms paying up to $100K for early access to Trump Truth Social posts," August 11, 2026
- CNN, "Trump promoted companies on Truth Social days after buying their stocks," July 16, 2026
- Micron (MU) intraday and daily price data, July 1 through August 27, 2026
