Trade Journal Analysis

Purpose

Users upload broker exports (交割单) and get an honest, data-grounded portrait of their own trading. Two layers are live:

• Profile — holding days, frequency, win rate, PnL ratio, cumulative PnL, max drawdown, top symbols, market/hourly distribution.
• Behavior diagnostics — 4 biases, each with severity (low/medium/high) and numeric evidence: disposition effect, overtrading, chasing momentum, anchoring.

Strategy extraction → backtest bridge lands in Phase 4c.

Supported formats (auto-detected):

• 同花顺 (Tonghuashun) — A-share CSV, typically GBK-encoded
• 东方财富 (Eastmoney) — A-share CSV, typically GBK-encoded
• 富途 (Futu) — HK/US CSV, UTF-8
• Generic — any CSV with columns like datetime/symbol/side/qty/price

Usage

Call the analyze_trade_journal tool directly. Never run Python from bash.

analyze_trade_journal(file_path="uploads/xxx.csv")
analyze_trade_journal(file_path="uploads/xxx.csv", analysis_type="profile")
analyze_trade_journal(file_path="uploads/xxx.csv", filter_expr="2026-01 to 2026-03")
analyze_trade_journal(file_path="uploads/xxx.csv", filter_expr="symbol=600519.SH")
analyze_trade_journal(file_path="uploads/xxx.csv", filter_expr="market=china_a")

analysis_type:

• full (default) — profile + behavior (strategy still placeholder)
• profile — profile metrics only (fastest)
• behavior — 4 behavior diagnostics only
• strategy — Phase 4c placeholder

filter_expr (optional):

• Date range: "YYYY-MM to YYYY-MM" or "YYYY-MM-DD to YYYY-MM-DD"
• Symbol: "symbol=600519.SH" (exact match on qualified symbol)
• Market: "market=china_a|us|hk|crypto"

Return shape (profile subset)

{
  "status": "ok",
  "file": "xxx.csv",
  "format_detected": "tonghuashun",
  "total_records": 326,
  "date_range": "2026-01-06 ~ 2026-03-28",
  "symbols_count": 42,
  "market": "china_a",
  "profile": {
    "total_trades": 326,
    "total_roundtrips": 118,
    "avg_holding_days": 3.2,
    "trade_frequency_per_week": 4.1,
    "win_rate": 0.48,
    "profit_loss_ratio": 1.35,
    "total_pnl": 18240.55,
    "max_drawdown": -9820.10,
    "top_symbols": [{"symbol": "600519.SH", "trades": 14, "total_amount": 1.02e6}, ...],
    "market_distribution": {"china_a": 326},
    "hourly_distribution": {9: 52, 10: 84, ...},
    "roundtrips_sample": [{"symbol": "600519.SH", "buy_dt": "...", "sell_dt": "...", "pnl": 3400.1, "pnl_pct": 0.021, "hold_days": 2.5}, ...]
  }
}

Note: PnL uses FIFO lot matching; unmatched open positions are excluded from win rate / PnL ratio (only closed round-trips count). Drawdown starts from zero realized PnL, so the first losing close counts.

For mixed-currency journals, total_pnl, total_dividends, max_drawdown and profit_loss_ratio are currency-keyed objects. Present each currency separately; never add their values or average their ratios. Dividend-only journals follow the same rule. overtrading.by_currency contains each currency’s activity diagnosis; mixed journals rank top_symbols by trade count and label amounts with their currency. No FX conversion is implied.

Presenting results to the user

Produce a single markdown report in the user's language. Lead with the top-line numbers, then section-by-section. Keep it dense — this is retail readers skimming on a phone.

Report template

## 你的交易画像 — {date_range}

**总体**
- 交易笔数：{total_trades}（完整来回 {total_roundtrips} 次）
- 平均持仓：{avg_holding_days} 天
- 交易频率：{trade_frequency_per_week} 次/周
- 胜率：{win_rate:.0%}
- 盈亏比：{profit_loss_ratio}
- 累计盈亏：{total_pnl}
- 最大回撤：{max_drawdown}

**最常交易的标的**（前 5 名）
| 标的 | 笔数 | 成交额 |
|------|------|--------|
| ... | ... | ... |

**市场分布**
{market_distribution}

**交易时段**
{hourly_distribution — highlight peak hours}

**一句话观察**
（根据数据写 1-2 句：过度交易？只做窄范围标的？集中在某时段？）

Guidance:

• If win_rate < 0.4 AND profit_loss_ratio < 1.0 → explicit warning: losing on both win rate and payoff. Ask whether they want behavior diagnostics (Phase 4b) or a cooling-off reality check.
• If avg_holding_days < 1 AND trade_frequency_per_week > 15 → flag intraday-heavy pattern, note that minute-level backtest would be better.
• If symbols_count <= 3 → concentration risk; ask if they want a sector- diversification check.

Follow-up dialogue

After the initial report, users typically ask:

• Time-slice: "3 月份表现怎么样" → re-call with filter_expr="2026-03-01 to 2026-03-31".
• Symbol deep-dive: "茅台这只赚了多少" → filter_expr="symbol=600519.SH".
• Market split: "港股和美股分开看" → two calls, market=hk and market=us.
• Hypothetical ("如果我严格止损 -5%") → Phase 4b feature; for now tell the user this is on the roadmap.

Do NOT re-upload — the file path is still valid for subsequent tool calls in the same session.

Error handling

• File not found / Unsupported extension — ask user to re-upload.
• Unrecognized trade journal format — share the detected columns back to the user and ask them to rename the key columns to: datetime, symbol, side, quantity, price, amount, fee (generic fallback).
• No trade records parsed — likely empty file or header-only; ask user to confirm the export contains actual fills.

Behavior diagnostics (shape)

Under result["behavior"]:

{
  "disposition_effect": {
    "severity": "high",
    "ratio_loss_to_win_hold": 1.69,
    "avg_winner_hold_days": 7.4,
    "avg_loser_hold_days": 12.5,
    "evidence": "Losing roundtrips held 12.5d vs winning 7.4d (ratio 1.69). Classic disposition pattern."
  },
  "overtrading": {
    "severity": "high",
    "busy_day_avg_pnl": -2632,
    "quiet_day_avg_pnl": 759,
    "evidence": "On busy days (≥3 trades) avg PnL -2632; on quiet days (≤1) avg PnL +759. High activity hurts returns."
  },
  "chasing_momentum": {
    "severity": "medium",
    "chase_ratio": 0.5,
    "buys_evaluated": 4,
    "evidence": "2/4 buys (50%) came after a >3% price run-up in the same symbol. Some chasing tendency."
  },
  "anchoring": {
    "severity": "high",
    "anchored_symbol_ratio": 0.83,
    "symbols_evaluated": 6,
    "anchored_symbols": [...],
    "evidence": "5/6 frequently-traded symbols stayed in a narrow price band (CV<5%). Strong anchoring."
  }
}

Detection logic (for user-facing explanation)

Bias	Metric	Medium	High
Disposition effect	avg_loser_hold / avg_winner_hold	≥ 1.2	≥ 1.5
Overtrading	(quiet − busy) / |quiet| day-PnL gap	≥ 0.3	≥ 1.0
Chasing	fraction of buys after 3-trade rolling +3% move	≥ 40%	≥ 60%
Anchoring	fraction of ≥5-trade symbols with price CV < 5%	≥ 33%	≥ 66%

Report section (Chinese)

## 行为偏差诊断

| 偏差 | 严重程度 | 核心证据 |
|------|----------|----------|
| 处置效应 | {high/medium/low} | {evidence} |
| 过度交易 | {...} | {...} |
| 追涨杀跌 | {...} | {...} |
| 锚定效应 | {...} | {...} |

**改进建议**（根据检测到的 high/medium 项生成）：
- 处置效应 high → 写死止损（例如 -8%），盈利持仓不要过早兑现
- 过度交易 high → 每日交易次数 <= N 的硬约束
- 追涨杀跌 high → 改买回调而不是新高，设置"涨幅 X% 以上当日不追"规则
- 锚定效应 high → 扩宽价格带，不要死守某个"心理价"

Phase 4c preview (not yet implemented)

Strategy extraction → SignalEngine code gen → auto-backtest lands in Phase 4c. When the user asks for it, respond honestly and offer the behavior diagnostics instead (they're live).