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KOSDAQ heavyweight concentration
Tracks how much of KOSDAQ market cap is concentrated in the largest names.
Observed 2026-09-08 · Fresh
Top 10
18.3%
KOSDAQ market-cap share
KOSDAQ market-cap share
Heavyweight concentration
| Rank | Name | Mkt Cap | Weight |
|---|---|---|---|
| 1 | Top 10 KOSDAQ Constituents - | 83.5T KRW | 18.3% |
| 2 | 알테오젠 196170 | 19.3T KRW | 4.23% |
| 3 | 에코프로 086520 | 11T KRW | 2.41% |
| 4 | 에코프로비엠 247540 | 10.3T KRW | 2.25% |
| 5 | 주성엔지니어링 036930 | 9T KRW | 1.98% |
| 6 | 레인보우로보틱스 277810 | 8.4T KRW | 1.84% |
| 7 | 원익IPS 240810 | 5.7T KRW | 1.25% |
| 8 | 이오테크닉스 039030 | 5.5T KRW | 1.21% |
| 9 | 리노공업 058470 | 5.3T KRW | 1.15% |
| 10 | 심텍 222800 | 4.6T KRW | 1.01% |
| 11 | HPSP 403870 | 4.4T KRW | 0.96% |
Interpretation guide
How to read KOSDAQ heavyweight concentration
The KOSDAQ Heavyweight Concentration radar shows how much of KOSDAQ's total market cap sits in its 10 largest constituents. Because KOSDAQ is a growth- and theme-driven market, concentration builds quickly when one theme dominates. The screen separates broad market strength from an index carried by a few leaders.
Measurement rules
The radar aggregates KOSDAQ market caps and calculates the combined weight of the top 10 constituents. Since the market is smaller than KOSPI, a handful of theme leaders can steer the entire index.
- Top 10 weight is the combined market-cap share of the 10 largest KOSDAQ constituents.
- The sector mix of the top names shows which theme currently leads the market.
- Individual weights provide a rough map of index influence.
How to interpret it
Rapidly rising concentration means capital is crowding into one theme. The index can look strong while the average stock lags. Falling concentration with improving breadth is usually a healthier rotation signal.
- A rising top-10 weight points to a theme-led market.
- If the top names cluster in one industry, a correction in that theme becomes an index-level event.
- Falling concentration with broader turnover reads as rotation into the rest of the market.
How to respond
When KOSDAQ concentration is high, the durability of flows into the leading theme matters more than the index itself. Fading turnover or flow reversals in the leaders can spill into the whole market, so prepare before it spreads.
- Separate KOSDAQ index-tracking decisions from individual theme trades.
- Cross-check KOSDAQ margin credit to see whether leverage is stacking into the leading theme.
- Treat new lows or co-selling in the top names as a warning that the theme is ending.
Related views
Related indicators and radar
KOSDAQ Margin Credit
Tracks leverage risk in Korea's growth and theme-stock market.
Checks whether retail leverage is building in the leading theme.
KOSPI heavyweight concentration
Market-cap concentration in the largest KOSPI names.
Compares concentration direction across KOSPI and KOSDAQ.
Market breadth
Advance-decline breadth, high-low balance, and trend participation.
Separates theme-led strength from broad participation.
Trading value spikes
Stocks where turnover is far above the recent average.
Checks whether turnover keeps supporting the leading theme.