Daily P&L Reviewer

The trade is only half the work. The review is where edge gets built.

When to use

• After 15:30 IST when market is closed.
• User uploads / points to today's trade log (JSON / CSV / SQLite).
• User asks "how did I do today" or "review my trades".

Inputs expected

A list of trades with at minimum:

• entry_time, exit_time
• instrument, side, qty
• entry_price, exit_price
• pnl (₹)
• rationale / setup tag (optional but valuable)

Metrics to compute

Performance

• Net P&L (after estimated STT + brokerage + GST)
• Win rate = wins / total
• Avg win, avg loss, expectancy = (win_rate × avg_win) − (loss_rate × avg_loss)
• Profit factor = total wins ₹ / total losses ₹

Risk

• Max intraday drawdown
• Largest single loss as % of starting capital
• Did daily loss cap trigger?

Behavioural flags (these matter more than P&L)

Output: the journal entry

Write to ~/projects/zerodha-signal-app/journal/YYYY-MM-DD.md (or user-specified path):

# 2026-06-06 — Trading Journal

## Numbers
- Net P&L: ₹+2,340 (2.3% on ₹1L)
- Trades: 6 (4W / 2L), win rate 67%
- Expectancy: ₹+390 / trade
- Max DD: ₹-1,100 at 11:42 IST

## What worked
- 09:30 ORB on BankNifty — clean, on-plan, sized right.

## What didn't
- 13:15 CE buy on Nifty — entered without OI confirmation, exited for -₹600.

## Behavioural flags
- ⚠ Revenge entry at 13:25 (within 5 min of loss). Recovered, but pattern noted.

## Tomorrow's focus
- Don't enter inside 12:30–13:30 chop unless setup is A+.

Tone

Honest, blunt, no pep talk. Treat the user as an adult building a process.