Sector rotation charts show which parts of the market are leading and lagging in real time. Here's a practical walkthrough of how to read relative-strength rankings and rotation charts.
Capital doesn't move into every sector equally at once — it rotates. At any given time, a handful of sectors are outperforming the broad market while others lag behind, and that leadership shifts as the economic cycle progresses. Sector rotation charts make that leadership visible so you can read where money is actually flowing, not just what the index is doing.
The building block of every rotation chart is relative strength (RS) — how a sector is performing compared to the overall market (usually the S&P 500), not in isolation. A sector can be "up" in absolute terms and still be a laggard if the index is up more; RS strips out the broad market move so you're comparing sectors on a level footing, typically expressed as a 0–100 score or ranking.
The simplest rotation chart is a ranked list: sectors sorted from strongest to weakest RS, refreshed regularly. Watching the same sector climb the ranking over several weeks is a sign of building leadership; watching it slide down is an early warning that leadership is rotating away, often before the sector's price has meaningfully declined.
Some platforms plot sectors on a four-quadrant chart using RS-Ratio (relative strength level) on one axis and RS-Momentum (the direction RS is heading) on the other. The four quadrants are typically labeled Leading (strong and improving), Weakening (strong but fading), Lagging (weak and still falling), and Improving (weak but turning up) — sectors tend to move clockwise through these quadrants over a full market cycle.
Sector rotation tells you where relative strength is concentrated, which narrows your search for individual stocks worth researching — strong stocks in strong sectors have the wind at their back. It's a filter for where to look, not a standalone buy or sell signal; individual stock selection, entries, and risk management still need to happen on top of it.
Sources & References
Track market breadth, sector rotation, and leadership scores across 12,000+ US stocks — start your 14-day free trial, full access from day one.
Try it free →Cancel anytime