Inside the AI hardware stack, from Nvidia's chips to the grid that powers them
An AI data center is seven layers of hardware: GPUs, memory, storage, CPUs, networking, manufacturing, and power. Here's the full map, with the public companies behind each layer and where the bottlenecks actually are.
SK Hynix (SKHY) passed Samsung for one day in South Korea. My theory on why it ran to the Nasdaq
On June 22 SK Hynix passed Samsung as South Korea's most valuable company for the first time in 25 years. It lasted one day, and the Kospi hit circuit breakers the next session. Here's my theory on why that's exactly why SKHYV just sprinted to the Nasdaq.
Jim Cramer's tech calls, like Micron and Intel, are missing far more than everything else
We pulled 23 of Jim Cramer's stock calls from late April through early July and checked the real numbers. His tech picks are down 7.2% on average with just 1 winner out of 10. His other calls are roughly flat, and just under half are green.
SK Hynix priced its Nasdaq debut 3.1% above Seoul, after demand ran 7 times oversubscribed.
SK Hynix guided its Nasdaq ADR offering to $149 each, a 3.1% premium to Seoul's close, after the book ran more than 7 times oversubscribed. Here's the math behind the premium and who anchored the deal.
A senator sold Apple and Nvidia in June. He bought Coherent and Micron instead.
Senator Sheldon Whitehouse's latest disclosure shows he sold Apple and Nvidia in late June, then bought Coherent and Micron the same week. Here's what the filing actually shows, and how each stock has moved since.
Chip stocks just had their best day in weeks. Meta and Amazon are both betting billions that AI compute demand isn't topping out (MU, WDC, META)
Micron, SanDisk, and Western Digital are having their best day in weeks. A week after a rumor said Meta had too much AI compute, Meta and Amazon both bet billions that demand is still growing, and Samsung's own record quarter couldn't shake investors until this week's data center news did.
Wall Street used to move the Kospi. This week, the Kospi moved Wall Street.
South Korea's Kospi tumbled into a bear market this week. Its relationship with Wall Street isn't a one-way street. It runs both directions, depending on where the shock starts.
Penguin Solutions (PENG) beat earnings for a seventh straight quarter and raised its outlook
Penguin Solutions (PENG) beat earnings for a seventh straight quarter, posting record $479 million in sales and $0.84 EPS, and raised its full-year outlook again. Shares fell in the regular session before jumping in after-hours trading on the beat.
A week ago I called my SK Hynix (SKHY) trade. I sold the $190 spike and bought the $154 dip.
David Han laid out a specific SK Hynix (SKHY) trade theory on July 7: a debut spike, Micron riding the sympathy wave, then a memory selloff as the excitement drained out. A week later it mostly played out, and he sold SKHY near $190 and bought back at $154. The original call is left exactly as written.
SK Hynix's $28 billion Nasdaq debut names Leopold Aschenbrenner's fund as a cornerstone investor
SK Hynix's record roughly $28 billion Nasdaq listing (SKHY) drew a cornerstone commitment from Leopold Aschenbrenner's Situational Awareness fund. The twist: the fund's single biggest disclosed position is a bet against the chip sector, which makes an anchor check into a memory chipmaker the story worth watching.
Samsung's record beat couldn't stop a memory stock selloff, and Micron (MU) is caught in it
Samsung posted a record 89.4 trillion won ($58.5 billion) Q2 operating profit, up 18-fold year over year, and the stock still opened lower. Memory names like Micron, SanDisk, and Western Digital are down sharply while the broader Nasdaq 100 barely moved. This is still developing after-hours and can change fast.
What is HBM? The memory chips powering the AI boom
Only three companies make high bandwidth memory, the chips every AI accelerator depends on, and supply is sold out through 2026. What HBM is, who makes it, and how to invest in it.
Hyperliquid's Sunday tape shows chip and memory stocks bouncing hard
Western Digital, SanDisk and Micron are all up more than 6% from Thursday's close on Hyperliquid's 24/7 stock perpetuals. Here is the Sunday snapshot, and why it is not the same as Sunday night's real reopen.
How to buy SK Hynix stock (SKHY), the leveraged tickers, and two symbols that no longer work
SK Hynix trades on the Nasdaq under SKHY, and any US brokerage account can buy it. Here is how to place the order, which stocks actually give you this trade, the six leveraged tickers, and why the leveraged ones lost more than double.
How to read an earnings report: EPS, margins, and what actually matters
Earnings reports look like a wall of numbers. Here is how to read the lines that matter, from revenue and EPS to margins, guidance, and whether a stock is cheap or expensive.
Made in America stocks: how to build a reshoring portfolio
A plain-English guide to the reshoring trade: the steel, machinery, power, automation, and chip stocks behind the Made in America push, and the catch the headlines skip.
Micron (MU), Nebius (NBIS) and chip stocks jump on Hyperliquid's weekend tape
Real markets are closed for July 4th, but tech and chip stocks are trading green right now on Hyperliquid's 24/7 stock perpetuals. Micron, Marvell and Nebius lead the bounce, and the S&P 500 and Nasdaq perpetuals are up too. Here is the full read, and why Monday could look nothing like this.
Bullish Watch, week of July 6: four oversold names, and one that already bounced
This week's Bullish Watch: CleanSpark (CLSK), Nokia (NOK), Teradyne (TER), and Ondas (ONDS) are oversold; AeroVironment (AVAV) already bounced on a beat-and-raise plus a fresh Army contract.
Samsung and SK hynix lead a 5.8% Kospi rebound after Thursday's chip rout (July 3, 2026)
Kospi crashed toward 7,300 early Friday before ripping to a 5.76% gain as Samsung and SK hynix reversed a brutal chip rout, a strong finish to a week that was still down about 3.65% overall.
Michael Burry shorted Micron (MU) from $1,052, a bet the chip pain is not over
Michael Burry disclosed a new short on Micron (MU), reported near $1,052, even after the stock had already crashed from $1,255. It closed July 2 at $975.77, so the short is working, and it fits his wider bet against AI chips.
Meta selling spare compute doesn't mean the AI crunch is over (META, CRWV, NBIS)
Chip stocks sold off on Meta's plan to rent out spare compute. But Meta itself just got rationed by Google and is locked into take-or-pay deals with CoreWeave and Nebius. Why the overcapacity story is shaky, plus what to watch next week.
Micron cracks $1,000 as the chip scare returns from Korea (MU, AVAV)
Stocks opened firm, then chips rolled over after 10 a.m. Micron (MU) cracked $1,000 as the Korea selloff spread. The Dow held, and healthcare and AVAV rallied.
Chips had their third worst day of 2026 and the S&P barely noticed (MU, INTC)
The S&P 500 closed within a whisker of flat on July 1 and the chip trade still had its third worst day of the year. Micron fell 10.5 percent, Intel lost 9 percent, and Meta gained almost 9 percent on the other side. Here is the damage report.
Intel's turnaround, AMD's run, and why the CPU still matters in AI
Intel (INTC) was the comeback story of 2026, up about 278% in the first half on a foundry turnaround. AMD (AMD) rose about 171% on the same theme. A deep dive into what changed at Intel, how AMD keeps taking share, and why the CPU still matters in an AI world obsessed with GPUs.