How to judge a sector's prosperity cycle?

This is Lesson 3 (free) of the Fund Strategy series. Prosperity is not a “feeling” — it is a set of indicators you can watch continuously.

Judging a sector’s prosperity answers two questions: is it rising or falling now, and roughly where is the turning point? Here is an operational indicator framework.

1. Mesoscopic high-frequency data (closest to the industry)

Output and orders: utilization, shipments, new-order indices — the most direct thermometer.
Price signals: rising product prices (commodities, components) often lead profit improvement.
Inventory cycle: passive de-stocking → active re-stocking is usually an early sign of recovery; active accumulation is late-cycle overheating.

2. Earnings confirmation

Revenue / profit growth: quarterly YoY and QoQ verify whether the “story” lands.
Gross-margin trend: a widening margin signals pricing power or cost improvement.

3. Flows and sentiment

Fund flows: northbound, main force, and sector-ETF net subscriptions reveal real preferences.
Valuation percentile: with PE/PB history, judge whether the price is cheap or dear.

4. Policy and event catalysts

Industrial plans, subsidies, tech breakthroughs, and major orders are often the “switch” of prosperity.

Where the cycle sits

Combine the above to locate the sector at: early cycle (data just turning) → mid cycle (earnings confirmed, flows arriving) → late cycle (valuation high, inventory building). Early/mid is better for DCA; late calls for trimming profits in batches.

Recap

Prosperity judgment is not one metric but a blend: use high-frequency data for direction, earnings for confirmation, and flows plus valuation for timing. Together with Lesson 2’s “fund picking”, that closes the loop on sector investing.

⚠️ This article is a framework illustration and not investment or trading advice. Markets are risky; decide with care.