A stop has one job: to mark where the reason for the trade stops being true. That makes it a question about the chart, not about the account. The setup here is generic, with no ticker and no real prices: a bullish structure, a pullback, and a long entry under consideration. The two tools below mark two different places where the idea can be proven wrong, and the position size calculator does the arithmetic afterwards.
1. The line that defends the trend
Edo Swing Levels keeps the last confirmed swing high and swing low and gives each one a role. With the bias Bullish, the low is the Strong Low, drawn solid and teal, and the high is the Weak High, dashed and faded. The Strong level is the invalidation line of the trend: a close below it is a change of character, the bias flips to Bearish and the Strong Low taken alert fires. It has to be a close. A wick that pierces the line and closes back above it is a test, and nothing changes. On the default Swing profile a low only counts once ten bars have closed on each side of it, so the line is never a guess.
2. The line that defends the zone
Edo Order Blocks works closer to price. When a bullish candle closes above the highest high of the previous ten bars, the default Displacement Lookback, it searches back up to fifteen bars, the Origin Lookback, for the last bearish candle and draws a box over that candle's range, from high to low. The block only reaches the chart if its quality score is at least 40, the default Minimum Score. From then on its base is its own invalidation: a close below it turns the Bull OB Mitigated, and the box goes dashed, fades and stops extending. A wick into the box, on the default Wick touch mode, only turns it Tested.
3. Choosing between them
In a pullback toward a Bull OB that sits above the Strong Low, there are two honest stops. Under the base of the box, the stop says the zone is the reason for the trade; if a close goes through it, the indicator itself declares the zone spent. Under the Strong Low, the stop says the trend is the reason; it is wider, it survives the zone failing, and only a change of character takes it out. When the block's candle is the swing low itself, both lines sit at the same price and the choice disappears. Two details apply either way. Each tool judges on the close, so a stop placed exactly on the line can be hit by a wick the indicators would ignore; how much room to leave is your call. And the choice should follow the reason for the trade, never the share count you were hoping for.
4. Turning the distance into a size
The position size calculator asks for account size, risk per trade, entry, stop and direction. Take a hypothetical $10,000 account risking 1%, which is $100, and a hypothetical long entry at 50.00. With the stop under the box at 49.00, one dollar away, the size is 100 shares: a $5,000 position, half the account. With the stop under the Strong Low at 47.50, two and a half dollars away, it is 40 shares: a $2,000 position, a fifth of the account. The money at risk is $100 in both cases. What changes is the exposure, and the calculator shows it next to the share count, so the difference is visible before the order goes in.
5. When the lines move
Neither level is fixed. When a new swing low is confirmed while the bias is Bullish, the Strong Low moves to it, so the trend line under an open trade can rise. Whether the stop follows it is a management decision; the indicator only redraws. An order block that turns Mitigated is finished as a reference, and each side keeps at most eight blocks by default, dropping the oldest. None of this changes the size of a position already open. It changes how much of the original risk is still on the table.
