68_trailing_stop

68 — Trailing Stop Execution

Category: Execution Strategy (SIMULATE)

Demonstrates a trailing stop-loss that follows the price favorably. When the price moves up, the stop tightens. When the price hits the stop, the position is exited.

How It Works

1. Places a market buy order for HK.00700 (or a code you specify).
2. Sets an initial stop at entry_price × (1 − trail_pct).
3. Polls the latest price every 3 seconds:
   • If price rises, recalculates new_stop = last_price × (1 − trail_pct).
   • If new_stop is meaningfully higher than the current stop, cancels the old stop and places a new one.
4. Exits when price ≤ stop, or after a configurable time limit.
5. cancel_all_order in finally — no orphaned orders.

Usage

python3 main.py                         # defaults to HK.00700, 2 % trail, 5 min
python3 main.py HK.00700 --trail-pct 0.03 --max-minutes 10

Key Concepts Demonstrated

• Dynamic order replacement (cancel → re-place)
• OrderType.STOP via the Futu SDK
• Position-fill detection via order_list_query
• SIMULATE-only with cancel_all_order cleanup
• Command-line arguments via argparse

Configuration

Flag	Default	Description
code	HK.00700	Stock ticker
--trail-pct	0.02	Trail width as fraction of price
--max-minutes	5	Safety timeout