2026-08-18 Korea Trading Journal — Kosho
Key takeaways
- 275 closed trades, win rate 27.3%, expectancy -1.35% per trade.
- Profit factor 0.40 · avg win +3.37% vs avg loss -3.13% (R:R 1.08).
- Best +22.53% / worst -8.33% — every closed trade counted, losses included.
Metrics
| Metric | Value |
|---|---|
| Closed trades | 275 (75W / 200L) |
| Win rate | 27.3% |
| Expectancy / trade | -1.35% |
| Profit factor | 0.40 |
| Avg win / avg loss | +3.37% / -3.13% |
| Best / worst | +22.53% / -8.33% |
Recap
The day’s closed trading activity reflected a challenging environment. Out of 275 trades closed, the win rate registered at 27.3%, with an overall expectancy of -1.35% per trade. The profit factor of 0.40 suggests that the magnitude of losses has significantly outweighed the gains realized across the day’s executions. Notable positive returns were seen in names such as 아난티 (025980) at +22.53% and 하나마이크론 (067310) at +16.43%. Conversely, the losses were marked by positions like 세아제강지주 (003030) at -8.33% and 코스맥스 (192820) at -6.83%. The average winning trade (+3.37%) did not sufficiently compensate for the average losing trade (-3.13%). 
Observations
The performance metrics indicate that the downside risk materialized with considerable frequency. The disparity between the best outcome (+22.53%) and the worst outcome (-8.33%) suggests that while significant upside potential was captured in select instances, the frequency and depth of drawdowns eroded the overall daily performance. The structure of the results points toward an environment where directional conviction was difficult to maintain across the board. 
Lessons from Outcomes
The losses observed, particularly in sectors represented by the notable losers, underscore the difficulty in maintaining positive expected value when the broader market momentum is subdued. The cumulative effect of several moderate-to-large losses, even when offset by a few substantial wins, resulted in a net negative expectancy. This pattern suggests that the selling pressure encountered on several names was persistent enough to overcome the positive momentum seen elsewhere. 
This research note is based solely on historical trade outcomes and does not constitute investment advice.
Notable trades (top 5 wins · top 5 losses)
| Result | Symbol | Buy | Sell | P&L | Held | Entry → Exit (KST) |
|---|---|---|---|---|---|---|
| win | 아난티(025980) | 3,954 | 4,845 | +22.53% | 164.7h | 08-11 12:25 → 08-18 09:05 |
| win | 하나마이크론(067310) | 36,637 | 42,657 | +16.43% | 91.8h | 08-14 13:20 → 08-18 09:05 |
| win | 코오롱생명과학(102940) | 17,968 | 19,680 | +9.53% | 1.2h | 08-18 09:25 → 08-18 10:40 |
| win | 서진시스템(178320) | 35,886 | 39,161 | +9.13% | 93.2h | 08-14 11:50 → 08-18 09:05 |
| win | 티에스이(131290) | 258,258 | 280,220 | +8.50% | 93.1h | 08-14 12:00 → 08-18 09:05 |
| loss | 세아제강지주(003030) | 109,409 | 100,300 | -8.33% | 94.3h | 08-14 10:45 → 08-18 09:05 |
| loss | 코스맥스(192820) | 248,748 | 231,768 | -6.83% | 114.1h | 08-13 15:00 → 08-18 09:05 |
| loss | 제이앤티씨(204270) | 18,508 | 17,313 | -6.46% | 90.8h | 08-14 14:15 → 08-18 09:05 |
| loss | 한국콜마(161890) | 135,235 | 127,073 | -6.04% | 90.9h | 08-14 14:10 → 08-18 09:05 |
| loss | 썸에이지(208640) | 796.80 | 750.20 | -5.85% | 95.2h | 08-14 10:25 → 08-18 09:35 |
Full data — all 275 closed trades: CSV download · or query live via OneQAZ MCP.
Related
- All-time track record: /track-record/all-time/
As of 2026-08-18 (KST).
Disclaimer: OneQAZ figures are paper-trading research, not investment advice. Past simulated performance does not predict future real-money results.
Three ways to see OneQAZ — this post is the synthesis layer:
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