Weekly Signal · · 4 min read
A Two-Speed Market
Every reading here is one you can recognise and check yourself — moving averages, breadth counts, plain returns. No black-box scores.
A two-speed market. A slim majority of stocks is still participating — but the index's gains are almost entirely the AI build-out: the average S&P 500 stock is up +4.9% this year, while our AI build-out index is up +134% and our broad-growth index +0.8%.
Stance: constructive but unexcited on the broad tape, watchful on the narrow leadership.
Data as of the 19 June US close.
State of play
FreeWhere we stand — using numbers you can verify on any screen.
- 60% of S&P 500 stocks are above their 200-day average, and 59% are positive on the year. More than half the market is in an uptrend — this is participation, not collapse.
- But the typical (median) stock is up just +4.9% this year, while the cap-weighted index runs far ahead. The index's big number is a handful of giants, not the average name.
- Shorter-term momentum is cooling: only 50% of stocks are above their 20-day average (versus 60% above the 200-day).
- New highs and new lows are running even — 14 versus 15. No fresh thrust under the surface, but no washout either.
The major indices are still in uptrends. The S&P 500 and the Nasdaq 100 both sit above their 50- and 200-day averages — the primary trend is up. Nothing in the price structure says the bull has ended; the question this letter keeps coming back to is how broad it is.
The map
FreeThe whole board — by trend, by sector, by our own indices.
Read it plainly: money is in equities and the dollar, and out of bonds, gold and crypto. That is a confident, growth-leaning posture — not a defensive one. And note the breadth of it: emerging and international markets are in uptrends too, so the narrowing is a US-mega-cap story, not a global one.
S&P 500 sectors are rotating out of the old defensives — energy, real estate, staples and healthcare are losing relative strength — and into tech, industrials and materials. Leadership is shifting toward the cyclical, growth side.
And the rotation is global. Across every region we track, cyclical sectors are beating defensive ones — strongly in the US (cyclicals +13% ahead this year) and emerging markets (a +26% gap), and positively in Europe and developed Asia too. Tech leads the world (+34% this year, blended across regions); healthcare and communications lag everywhere.
| Index | What it is | Week | YTD |
|---|---|---|---|
| Rubin | The AI build-out — semis, power, packaging | +9.3% | +134% |
| Euro-AI | European AI names | +6.2% | +37% |
| HALO | Broad growth, 100 names | +0.2% | +0.8% |
Since the spring low, Rubin is up about +89% while HALO is up +5%. Strip out the AI build-out and there is very little rally left in the broad book. That single comparison is the most important fact about this market — and the through-line for Parts 3 and 4.
The whole rally in one picture
The index bar-race: Rubin vs HALO vs Euro-AI, every line started at the same point on the 31 March low. One runs to +89%; the broad-growth book sits flat. If you look at one chart this week, this is it.
Free with a Closelook account — embeddable for X / LinkedIn.
The tells
🔒 SubscriberWhat the structure says may lie ahead — transparent reads that point the same way.
- The Nasdaq versus its own members. The Nasdaq 100 is up +25% while the equal-weight version of the same index is −2.9%. Same 100 companies — one number says +25%, the other says slightly red. The whole gap is the handful of giants at the top, and it is the clearest, most checkable measure of how top-heavy the move is.
- Even inside the leaders, fewer are pulling the weight. In the Global X Data Center & Digital Infrastructure ETF — a hot pocket — only 12 of 20 holdings are beating the basket. The basket's return is the few, not the many.
- Short-term breadth is fading faster than long-term. Half the market (50%) is above its 20-day line versus 60% above the 200-day — the recent tape is softer than the trend. It is the kind of gap that resolves one of two ways: the laggards catch up, or the leaders come back to them.
The primary trend is up and a majority still participates — but every check of how broad the move is points the same way: the index's strength is concentrated at the very top, and the broad market underneath is going sideways. That is not a top. It is a market with a narrow point of failure.
The one to watch
🔒 SubscriberIf you watch one thing in the week ahead.
Semiconductors (SMH / the chip complex).
Semis are the load-bearing wall. They are the engine of Rubin's +134% — and with broad growth flat (HALO +0.8%), there is no bench: nothing broad underneath to take over if the leaders stall. That makes one chart the most important tell into next week — and it's a chart anyone can read.
The state of play: SMH closed at 660, about 20% above its 50-day average (≈548) — the chip leaders have run hard and are stretched. That extension is exactly why they're the tell: stretched leaders, with no broad bench behind them.
- Semis holding their near-term trend (the 20-day line) = the AI leadership is still intact; the narrow bull can keep grinding.
- The first sign of cooling — semis rolling over from these stretched levels, or the Nasdaq-versus-equal-weight gap widening past −5% — = the top-heavy move losing its one engine, with little broad strength to cushion it.
- The deeper line: a slide back toward the 50-day (≈548, ~17% below) would mark a real change of character, not just a pause.
- The breadth confirm: the percentage of S&P 500 stocks above their 200-day slipping back under 50% would say the slim majority has become a minority — the two-speed market tipping to one speed.