Weekly stock screens
Market Radar
Separate stock screens from chart indicators and review market breadth, weekly breakouts, one-year winners, and market-cap concentration.
2026-05-15
Market breadth
KOSPI 25%
KOSPI 25% / KOSDAQ 11.5%
2026-05-15
52-week highs + turnover
한국쉘석유
20 names
2026-05-15
One-year return breakouts
대한광통신 3,834.8%
KOSPI 미래산업 / KOSDAQ 대한광통신
2026-05-15
KOSPI heavyweight concentration
60.1%
3,686.8T KRW
2026-05-15
Trading value spikes
동양고속
20 names
2026-05-15
Foreign + institution co-buy
하나마이크론
20 names
2026-05-16
US market breadth
NYSE 22.7%
NYSE 22.7% / NASDAQ 23.4% / AMEX 11.1%
2026-05-16
US 52-week highs + turnover
J.B. Hunt Transport Services, Inc.
11 names
2026-05-16
US mega-cap concentration
25.54%
28.7T USD
daily
Market breadth
Advance-decline breadth, 20-session high-low balance, and 20-day trend participation.
2026-05-15
| Rank | Name | Market | Metric | Above 20D | 20D H-L |
|---|---|---|---|---|---|
| 1 | KOSPI breadth - | KOSPI | 25% | 43% | -16 (6 / 22) |
| 2 | KOSDAQ breadth - | KOSDAQ | 11.5% | 29.3% | -28 (3 / 31) |
Interpretation guide
How to read market breadth
The Market Breadth radar shows whether KOSPI and KOSDAQ strength is broad enough to trust. It combines the advance-decline balance, the 20-session high-low spread, and short-term trend participation so you can distinguish a broad market upswing from an index move led by only a few heavyweights.
What it tracks
This screen tracks advancers versus decliners, recent 20-session highs and lows, and the share of sampled large names trading above their 20-day average. The goal is to read both daily participation and short-term trend quality.
- Advancing share above 50% means more stocks are rising than falling.
- A positive 20D high-low balance means short-term breakouts outnumber short-term breakdowns.
- Above 20D shows how many important stocks remain above their short-term trend line.
How to interpret it
If the index rises while breadth is weak, the rally is narrow and more vulnerable to reversal. If breadth improves before the headline index moves much, the market may be preparing for healthier rotation.
- Bullish: advancing share above 55%, positive 20D high-low balance, and Above 20D above 55%.
- Neutral: advancing share between 45% and 55%, with highs and lows roughly balanced.
- Bearish: advancing share below 45%, negative high-low balance, and Above 20D below 45%.
How to respond
Strong breadth supports trend-following and breakout exposure. Weak breadth calls for smaller position sizes, tighter risk limits, and more skepticism toward index-only rallies.
- In strong breadth, cross-check 52-week highs, trading value spikes, and co-buy screens to build a shortlist.
- In weak breadth, avoid chasing thin themes and focus on relative strength, liquidity, and downside control.
- If KOSPI and KOSDAQ diverge, treat them as separate opportunity sets rather than one market.
Related views
Related indicators and radar
52-week highs + turnover
Fresh highs confirmed by meaningful trading value.
Check whether stronger breadth is also producing new highs.
Trading value spikes
Stocks where turnover is far above the recent average.
Confirms whether participation is backed by stronger turnover.
KOSPI Index
Korea's large-cap benchmark for risk appetite and flow conditions.
Connects breadth signals to the KOSPI headline trend.
KOSPI Margin Credit
Tracks retail leverage in KOSPI-listed large-cap names.
Checks whether improving breadth is also carrying leverage risk.