watch nowCNBC's Jim Cramer said Micron's entry into the trillion-dollar club marks a turning point in the market."We're on the verge of a new era, where I think the trillion-dollar club may be a heck of a lot easier to join than in the old days, when the club excluded the riffraff," the "Mad Money" host said. "AI has changed the order of things. No, it's not being debased. It's just become more inclusive. As it should be."Shares of Micron Technology jumped 19% Tuesday, crossing the $1 trillion market capitalization threshold. Cramer said Micron's rise reflects how AI has reshaped investor priorities. Micron makes "the best high-bandwidth memory chips, the kind that go into the data center. No wonder its market cap touched a trillion today," he said. Cramer then ran through the top nine U.S. based trillion-dollar companies:NvidiaCramer said he believes AI chip giant Nvidia should take a page out of Apple's old capital return playbook and repurchase more stock while boosting its dividend consistently."The king has indeed begun to underperform when it reports; it's traded lower on earnings the last four quarters. But then it performs strongly intra quarter, although in a red-hot semiconductor market, Nvidia's only up 14% for the year. It's got the best AI technology, but that's no longer enough."AlphabetCramer remains bullish on Google parent Alphabet, particularly its cloud business, due to multiple growth engines."There's a lot to like here: YouTube, the largest video company in the world; Waymo, the number one self-driving car; search, including Google and Gemini and Google Cloud, which is the best horse I want to bet on."AppleWhile Apple was once viewed as behind in AI, Cramer argued investors are underestimating the company's improving AI ecosystem."Apple has the best hardware and it's now snared one of the best AI platforms with Gemini ... Nothing comes out of Apple unless it's near perfect. Lately that's been paying off."MicrosoftHe acknowledged concerns around Microsoft's AI positioning and enterprise software exposure, but said he still has confidence management can turn things around. That's why his Charitable Trust, the portfolio used by the CNBC Investing Club, still owns it. "We simply cannot believe that Microsoft won't fix things. It has so much money, it has so many smart people, I have to believe they can figure it out."AmazonCramer said he has become increasingly bullish on Amazon, especially after revising his view on the durability of the company's custom semiconductors."Amazon, is misunderstood, even by me, and I've become a huge believer ... Last week, I said that Amazon's own chips don't hold their value, unlike Nvidia. I got that wrong. The new chips most certainly will hold their value for several years, pretty similar to Nvidia's, but for a lower price. I think that's one reason why Nvidia's stock has stalled while Amazon's been going higher."BroadcomHe called Broadcom a "sleeper" AI winner thanks to its custom chips and steady leadership."CEO Hock Tan is a shrewd businessman who's constantly getting new clients. He's a big reason why we've stuck with Broadcom through thick and thin for the Charitable Trust, racking up big gains."TeslaAccording to Cramer, investors should increasingly think of Tesla as an AI and robotics company rather than simply an automaker."When we think of Tesla, we think of cars, but we should be thinking of self-driving vehicles and robots, which will be the big growth engines."MetaCramer expressed skepticism over what's next for Meta despite its powerful collection of apps."We just aren't sure what Meta's doing beyond Facebook, Instagram, Eyeglasses, AI, and WhatsApp...We know they've been able to pull multiple rabbits out of multiple hats. But we're in a 'what have you done for me lately' business and the answer here is nada."Berkshire HathawayHe questioned whether Berkshire can maintain the same appeal following Warren Buffett's departure as CEO."Now that Warren Buffett has stepped down, people are going to get bored with owning this stock and the only thing that really keeps them in is they don't want to pay the capital gains tax when they ring the register. I like the mosaic of businesses, but a lot of people are in this stock because they believe in Buffett, so they might want to retire along with him."watch now