Industry Monthly Revenue Comparison: Relative Winners in Industry Downturns Matter Most
4-section structure: Concept / How We Compute / How to Read / Caveats.
1. Concept
Is a stock's monthly revenue YoY of −5% good or bad?
Depends on peers. If industry average YoY is:
- −15% → this stock is a relative winner
- +5% → this stock is losing market share (warning)
Absolute numbers mean nothing; relative position matters. This extends P1B.1 (ratio percentiles) and P0.4 (valuation percentiles) to monthly revenue.
Three dimensions:
| Dimension | Question |
|---|---|
| Rank | What's its rank in the industry? |
| Market Share | How much of the industry pie does it hold? |
| Share Trend | Is market share rising or falling? |
The third is most important. Share trend reveals:
- Consolidation winner → share rising
- Losing competitiveness → share falling
- Winner-takes-all → top 3 aggregate share rising, others falling
2. How We Compute
2.1 Data Source
FR_SR_全_tw_h— monthly revenue (current_month_revenue, yoy_change_pct, mom_change_pct, ytd_*)basic_info.sector— industry definition (consistent with P0.4 / P1B.1)
2.2 Flow
1. Latest common month = MAX(revenue_month) WHERE sector = target's sector
2. Fetch all same-sector companies' revenue that month
3. Target rank = position in revenue desc ordering
4. Market share = target revenue / total industry revenue
5. Industry stats = total / Q1 / median / Q3 / avg YoY / median YoY
6. 12-month share trend = past 400 days, monthly (target / total)
2.3 UI Structure
- Top: target summary (rank, YoY rank, market share, YoY%)
- Middle: industry stats (total, percentiles, avg/median YoY)
- Bottom: top-10 peer table + 12-month share trend
2.4 Caching
15-minute API cache (monthly data changes slowly).
3. How to Read
3.1 Rank + Market Share Combined Reading
| Scenario | Interpretation |
|---|---|
| Rank #1, share > 20% | 🟢 Industry leader (oligopoly/monopoly) |
| Top 3, share rising | 🟢 Consolidation winner |
| Top 10, share flat | 🟡 Niche player |
| Rank falling, share falling | 🔴 Losing competitiveness |
| Rank rising but share falling | 🟡 Industry-wide decline; this one just declining less |
3.2 YoY Discrimination
- Industry avg YoY positive: industry growing; stock below avg = not keeping up (warning)
- Industry avg YoY negative: industry declining; stock YoY above avg (or less negative) = relative winner — most likely to recover first when cycle turns
3.3 Share Trend Lines in Practice
Green (share rising sharply):
- Consolidation winner
- Common in semi, LED, EV supply chain during integration phases
- Stock price often leads fundamentals
Red (share falling sharply):
- Competitor rising
- Tech obsolescence
- Market shift (Nokia in smartphone era)
- Final exit signal
Flat (within ±0.1pp):
- Mature stable market
- Not necessarily bad (financials, telecom)
4. Caveats
⚠️ Coarse Sector Granularity
TWSE major classification:
- "Semiconductors" mixes IC design / foundry / OSAT / IDM / distribution — totally different business models
- "Electronic components" mixes PCB / connectors / passive — different valuation logic
Treat as "major industry indicator" rather than true competitor analysis.
⚠️ TW Only
- TW companies report monthly revenue by the 10th of next month (legal disclosure)
- US reports quarterly revenue (coarser)
- US version planned for Phase 2 with SIC/GICS mapping
⚠️ Latest Month Sample May Be Partial
Early days of the new month, some peers haven't reported yet. We use MAX(revenue_month) to find the last common month — but missing reporters will understate industry total.
⚠️ Market Share Not Weighted
Our definition: company revenue / industry total. Doesn't account for:
- Overseas subsidiary revenue (some consolidated differently)
- Product mix (same revenue, very different margins)
Strict market share requires single-product-line data; ours is company-level approximation.
⚠️ Share Trend Statistical Significance
- ±0.5pp within 12 months is usually normal noise
- > 1pp sustained is a structural change
- UI flags > 0.1pp as directional (not statistical)
⚠️ Revenue ≠ Profit (CRITICAL)
- Rising share + collapsing margin → price war, not a real winner
- Falling share + rising margin → strategic retreat from low-margin customers
Always combine with gross margin, net margin, operating cash flow.
Further Reading
- Monthly Revenue: YoY, MoM & Seasonality
- Financial Ratio Percentile (Self + Industry)
- Relative Valuation Percentile (P0.4)
Try It
- Open Stock Analysis → Revenue — scroll to "Industry Monthly Revenue"
- Observe rank, market share, YoY rank
- Watch the 12-month share trend for structural changes
- Compare to industry avg YoY to identify relative winners/losers
- Switch stocks: leaders (TSMC, Largan) vs mid/small caps show dramatic differences
- Click 📐 for formulas, industry definition, caching strategy