Tuesday isn’t usually a posting day for me, but today the market is offering two live lessons worth more than any textbook. Neither changes what I’m doing — which is, itself, the third lesson.

1. SpaceX joins the Nasdaq-100 — a lesson in flows vs. conviction

SpaceX enters the Nasdaq-100 today, one of the fastest additions in the index’s history — just fifteen trading days after its IPO, under Nasdaq’s new fast-entry rules. Funds tracking the index now must own it: J.P. Morgan estimates the inclusion could draw around $4.3 billion in passive buying, with more than $587 billion benchmarked to funds tracking the Nasdaq-100.

Here’s the teaching moment: none of that buying is a judgment about the business. Index funds don’t buy because they believe; they buy because the rulebook changed. Two details make this concrete. First, because only a small slice of SpaceX shares actually trades, its index weight lands around 1.3% — so the mechanical buying may matter less than headlines suggest. Second, the calendar cuts both ways: mechanical index demand arrives now, while staged lockup expirations could bring additional insider supply in the months ahead. Flows are plumbing. Plumbing is not a thesis.

Practical takeaway: with unusual mechanical flows sloshing around the index, I wouldn’t read much into any single move in $QQQ this week.

2. The semiconductor reality check — a lesson in expectations

Samsung just gave investors a preliminary look at Q2, forecasting roughly a 19-fold jump in operating profit. The stock fell sharply anyway, and U.S. memory names including Micron and SanDisk came under heavy pressure.

This is the purest demonstration of a principle I keep coming back to: price and fundamentals are not the same thing. After the runs these stocks have had, the market wasn’t waiting to hear “great” — it had already paid for “spectacular.” When expectations are priced for perfection, great earnings are a disappointment. A great company can still be an expensive stock, and an expensive stock can fall while the business is thriving.

I don’t read this as proof the AI trade is broken. I read it as the market re-learning, chip by chip, what it’s actually paying for — the same repricing I wrote about in my H1 take. And under the surface, the more interesting story continues: this still isn’t a simple risk-on / risk-off market. It’s rotation — semis under pressure while other corners hold up.

3. So what am I doing? The same thing.

I’m not buying semis simply because they’re falling. I’m not chasing whichever sector happens to be green today either. I’m waiting for individual names to reach clean demand zones — and until they do, cash and patience remain positions (Lesson 01, always). On the calendar: the Fed minutes on July 8, how the market digests the semiconductor weakness and SpaceX flows, and June CPI on July 14.

Still patient. Still watching the levels.

Educational only — my own process and opinions, not investment advice. I hold positions in securities mentioned or related. Past performance is not an indication of future results.