Publication date: May 29, 2026
In one week, two chip makers, Micron Technology and SK Hynix, have broken through the magical $1 trillion market value barrier. SK Hynix is already up 250 percent this year. UBS tripled its price target for Micron to $1,625. The Nasdaq and S&P 500 hit new records yesterday. And somewhere in a group app, someone types the question, "Is this a bubble, or not?"
The honest answer to that question is: we won't know until after the fact. What we can do is explain how an automated investment system looks at such a concentrated rally. And why that is a fundamentally different view than that of the average investor.
In this blog, we explain what happens under the hood when the market moves so one-sidedly to one theme. And which type of strategy wins, which type takes a break, and why emotion is the most expensive trap in weeks like this.
On Monday, May 25, Micron Technology became the first pure chipmaker to pass the $1 trillion market value. Two days later followed South Korea's SK Hynix, which shot up to nearly 15 percent in one trading day and closed the session at +9.3 percent. SK Hynix's market value now stands at 1.680 trillion won, or $1.12 trillion. Since Jan. 1, the stock has risen 250 percent.
UBS, meanwhile, tripled its price target for Micron to $1,625, pushing the stock up 19 percent in one day. That was the fifth-best trading day ever for the stock.
The consequence at the index level: the Nasdaq Composite touched 26,725 points intraday yesterday, a new record high. The broad S&P 500 also sat at a record 7,539 points. Much of those gains came from a handful of AI-related names, mainly chipmakers that supply the memory chips needed to train AI models.
To those looking at it from a distance, that feels double. On the one hand: the profitability of these companies is real; their order books are bulging. On the other hand: it is unhealthy when one theme carries the entire market. That is exactly when emotion, whether FOMO or just fear, takes over from strategy.
An automated system has no opinion about AI. It has rules.
Those rules look at things like price movement, volatility, volume, momentum and the interrelationship between markets. A human reads Het Financieele Dagblad and thinks "this can't be going well." A system reads a price series and thinks, if we may put it humanly,"the trend is positive, the volatility is manageable, my signal is green."
That sounds cold, and it is. But it is precisely this absence of a narrative that keeps the system from prematurely exiting from a rally that could still continue, and from stubbornly hanging on when the market actually turns.
Important to understand: not all automated systems react the same way. Two main flavors determine the difference.
A trend-following system does what the name implies: it identifies a trend and rides along. As long as the price moves in a certain direction, the position remains open. Only when the trend provably breaks is the position closed.
In a week like this one, this type of system takes full advantage. The AI trend is clear, the moves are large, and the signal remains "long." Trend following strategies like components of Global Strategy are built precisely for this type of environment.
The turning point? A trend-following system never exits at the peak. It can't, because it doesn't know what the high point is. It waits for evidence that the trend is broken. In return, it also never takes profits prematurely, and that has historically been the winning choice in a multi-year bull phase.
A market-neutral system goes long and short at the same time, aiming to be independent of market direction. It earns when certain relationships between stocks, sectors or indices recover or drift further out, not when the market as a whole rises or falls.
In a week like this, such a system doesn't do much exciting. No celebration, no drama. But that's exactly the point: market-neutral strategies are built to deliver returns without depending on the Nasdaq standings. At some point when the chip rally falters, and that time will come, that type of system is the stable factor in the portfolio.
The question we often get is, "Which one is better?" The honest answer is: neither. It depends on the year.
In highly trending years (such as 2020 and, it seems, 2026), trend-following systems win convincingly. In messy, sideways years with lots of rotation between sectors, market-neutral systems win. Those with only one type experience peaks and troughs. Those who combine both experience a flatter ride with fewer sleepless nights.
That's not a marketing story. That's what our clients see reflected in their own drawdowns, the moments when things briefly go against them. A diversified portfolio across strategy types recovers faster than a concentrated one, simply because not everything is wrong at once.
It's tempting to act on a rally like this one. Some clients think, "I'm going to add some more, because this is going to continue." Others think, "I'll take profits off now, because this can't continue." Both reactions are human, and both have the same root: overriding a system based on a feeling.
The reason our clients choose automated investing is precisely to avoid this. A system doesn't know what a trillion dollars is. It doesn't know who SK Hynix is. It doesn't know what an AI bubble might be. It only knows what its rules say. And those rules are pre-conceived, tested, and approved by a trader who has made it his business.
The moment the market turns, that's not a disaster. That is the normal work of the system. What is a disaster is: going in with a feeling that in hindsight turned out to be based on a single headline.
Whether the current chip rally is a bubble or not, we won't know for a few years. Some analysts say we "may only be halfway there." Others warn that a sector concentration like this rarely ended well in history. Both have arguments, and neither knows for sure.
What you can do now, however, is to arrange your portfolio so that the answer to that question is less harsh. That means spreading out across strategy types, not going all-in on the theme that works today, and letting your systems do their job.
Wondering how your own portfolio compares to such a concentrated market? Let's talk about it.
Want to see what a combination of trend following and market neutral systems might look like for you?
Click here to schedule a no-obligation consultation
Team System2follow