Fees + slippage eat all profits. Need >70% win rate. T+2 in Vietnam: can't scalp stocks, only VN30F1M futures.
Order book imbalance. VWAP bounce. Level 2 data. Tape reading. Need low-latency platform.
Max 0.5% capital/trade. Tight stop loss (0.3-0.5%). Daily max loss 2% → stop trading that day.
Very stressful. Not suitable for 99% of people. Recommendation: avoid unless 5+ years experience.