在蜡烛图发明之前机构如何进行交易 (How Institutions trade before candles-st)

This idea is based on how someone can generate profits without needing any prior chart knowledge, or how traders and institutions used to trade in the past.
The concept involves analyzing the previous session’s data—such as calculating the range or behavior of the London session—and then placing trades in the following session, like the New York session, based on that information.
Using this logic, am build an Expert Advisor (EA) that follows the same principle to identify profitable trading opportunities automatically

This Expert Advisor (EA) strategy is built around identifying trading opportunities based on the London session’s price range. The EA will calculate the session’s high and low using a customizable time input. By default, the London session opens at 12:00 GMT+5 and closes at 17:00 GMT+5. Once the session ends, the EA calculates the high-low range (difference), then uses that value to set up pending buy and sell limit orders. The formula is as follows:

Difference = London High - London Low
Sell Limit Level 1 = (Difference × 0.20) + London High
Buy Limit Level 1 = London Low - (Difference × 0.20)

The same logic applies for Level 2 and Level 3 using multipliers of 0.58 and 0.92 respectively. The EA settings will allow users to modify these multipliers and define how many levels to activate (e.g., 1, 2, or all 3).

Additionally, the EA will feature a basket-based Take Profit (TP) and Stop Loss (SL) system. If the net floating profit across all open trades reaches +$500 or -$500 (changeable in settings), the EA will close all running positions. This ensures risk management is maintained at the account level rather than per trade.
For user convenience, a Display Panel will be included showing essential information in a large, easy-to-read format directly on the chart. This includes the total account balance, total equity, number and lot size of all buy and sell positions, and the maximum drawdown hit. This display keeps the trader informed of real-time account metrics at a glance.

Note: Please review and test this EA thoroughly—make it as useful as possible if you can.
Be blessed.

Best Regards
Hassiikahloon.