Money moves into investments after they've done well and out after they've done badly, not as a quirk of a few investors, but as the shape of the entire aggregate.
One of the most reliable patterns anywhere in finance is that money follows performance. An asset or a fund does well, capital pours in. It does poorly, capital drains out. This isn't an occasional habit of unsophisticated investors, it's a pattern visible in the flow data across decades and across markets, and it's how a huge number of investors end up buying high and selling low without ever meaning to.
It's understandable behavior, which is precisely why it's so hard to shake. Strong performance looks like evidence of something. It draws coverage, the coverage draws interest, the interest draws money. Someone reading about an approach that performed brilliantly over five years isn't being irrational to take notice, the record is real. What they usually skip is asking whether the conditions that produced it are still in place, and whether today's price already reflects everything they find impressive about it.
The arithmetic problem is that a strong record and an attractive entry price are often working against each other, and most people never notice the tension. Something that's risen a lot has, by definition, gotten more expensive relative to whatever it actually produces. The very performance that caught the investor's eye is what erased the appeal of the current price. That's not always true; sometimes strong performance reflects a genuine improvement that keeps going. But an investor who buys purely on past returns has chosen the one selection criterion guaranteed to be at its highest at the worst possible moment to act on it.
You can see this in the timing of flows around market extremes. Money moving into equities has historically tended to peak near market tops and bottom out near market lows, exactly backward. Investors were most eager to buy in when prices were highest and most eager to bail when prices were lowest, and the net effect is that a huge amount of capital sat through the declines and missed the recoveries.
It's worth understanding why this feels so reasonable while it's happening, because the reasonableness is the whole trap. At a peak, the news is good, the recent record is excellent, and buying in feels backed by abundant evidence that you're joining something that works. At a trough, the news is dreadful, the recent record is ugly, and pulling out feels backed by abundant evidence that you're escaping something broken. In both cases the investor is responding sensibly to the information in front of them, and in both cases the information is systematically misleading about what happens next.
The mechanism doesn't spare professionals either, which matters because it kills the comfortable assumption that this is purely a retail failing. Firms that have performed poorly lose clients; firms that have performed well attract them. Professional managers face the same flows individuals do, and they have to manage the consequences, large inflows to deploy after a good stretch, redemptions to fund after a bad one, which limits how contrarian they can actually afford to be even when they want to be.
The effect on an individual's own returns is the same gap discussed elsewhere in this series, and here it becomes concrete rather than abstract. Because their money went in after the good stretches and came out before the recoveries, the return an investor actually experiences ends up materially worse than the return the underlying asset produced. The asset didn't let them down. The timing of their own participation did, and that timing was set by exactly the information that felt most persuasive at the time.
The particular habit most worth guarding against is extrapolating a recent record into the future. A fund that's performed brilliantly for five years might have done so because the approach is genuinely sound, or because conditions happened to favor it, or because of plain luck, and telling those three apart is extremely hard. Five years is short enough that chance alone will produce a handful of excellent records among any large group of managers, and those records look, at the time, indistinguishable from ones produced by real skill.
The defense here is the same one that keeps coming up throughout this project, and repeating it isn't laziness. A framework decided ahead of time, what to own, in what proportion, maintained through rebalancing rather than revised in response to whatever just happened, removes the mechanism entirely. An investor committing the same amount on the same schedule regardless of what's recently done well isn't chasing anything. The decision got made once, and it doesn't check the news.
None of this requires believing recent performance is meaningless, which would be overcorrecting. It just requires recognizing that recent performance is a poor basis for allocating money, that it's the basis most investors actually use, and that the aggregate cost of using it is measurable and negative.
The pattern shows up beyond individual funds, in whole categories, sectors, and themes, and it's easier to see there because the products themselves are built in response to it. A sector or theme performs strongly, and new investment vehicles get launched to provide access to it, launched precisely because the demand now exists, which is to say, precisely after the strong performance already happened. Seeing a wave of new products devoted to a single theme is seeing evidence that the theme has already paid off, and that a great deal of capital is now arriving to chase that payoff. That's not a forecast that the theme is about to fall apart. It's an observation about where in the sequence you're standing, and the answer is usually late.
VESTFY™ treats performance-chasing as the behavior that ties every other failure in this section together. Overconfidence produces activity, the disposition effect distorts what gets sold, and performance-chasing decides where the money goes next. Put them together and you get an investor who is perpetually arriving late, and the record on arriving late isn't ambiguous.