Last updated 7 September 2026
How to change the strike of one leg in an option basket
- Press the − or + button beside the strike on the leg you want to move. One press, one strike.
- The leg keeps everything else — its side, its lots, and its Target, SL and Trail values.
- + always goes up the price scale, for a call and a put alike, so the number always moves the way you press.
- It refuses instead of guessing. At the end of the chain, on an occupied strike, or where no contract exists, it says why and changes nothing.
- Live prices follow the leg. Stepping past the priced range widens it for you, by the smallest step that reaches.
- A moved leg is saved from where it now is, so a saved basket never stores a strike the leg has left.
When this happens
- 1 You want to adjust one leg of a structure — move a wing further out, bring a short strike nearer — without clearing the basket and clicking the chain again.
You have built a structure on the Options screen and want to move just one leg — a wing further out, a short strike nearer the money — without starting again.
There is a control for exactly that on every leg row.
The buttons
Beside the strike on each leg in the Basket panel there is a − button and a + button. Each press moves that leg to the next strike on the chain.
They sit next to the lots stepper, and they are there whether or not the Target & SL columns are open.
What the leg keeps
Everything except the strike:
- its side — buy stays buy, sell stays sell,
- its lots,
- its Target, SL and Trail values.
This is the reason the buttons exist. Before them, moving a leg meant removing it and clicking the chain again — two clicks, and the size and protection you had set were quietly lost on the way.
Plus always goes up
+ moves to the next higher strike number, for a call and a put alike.
That is deliberate. The number sits between the two buttons, so a + that made it go down on a put would be a control that disagrees with the figure it is attached to.
When it will not move
The screen refuses and tells you why, and your basket is left exactly as it was. There are three cases.
You are at the end of the chain. The message names the strike and says it is the lowest or the highest one on this chain. This is the end of the real option chain, not a display setting, so there is nothing to widen — there is simply nothing beyond it.
You already have a leg on that strike. You cannot hold two legs of the same contract type on one strike. If you want a larger size there, raise that leg’s lots instead.
There is no contract at that strike. A chain can carry a strike on one side and not the other.
A leg that quietly landed on a nearby strike instead of the one you asked for would be a different structure wearing your structure’s name — and it would look exactly like a working button until it placed something you had not built. So it stops rather than guesses.
The live prices follow the leg
Only the strikes near the money carry live prices. That is what the Strikes buttons above the chain control.
If you step a leg past that range, the screen widens the range for you so the leg keeps a price, and remembers the wider setting for next time — exactly as if you had pressed the wider Strikes button yourself.
It takes the smallest setting that reaches your leg, never the widest.
If your leg goes beyond even the widest setting available to you, it still moves. But it has no live price out there, and the basket says so and will not place until every leg has one.
What it does to a saved basket
A leg you move by hand becomes a strike you chose.
If you save the basket afterwards, that leg is remembered from where it now is, rather than from where it started. So a leg you loaded on one exact strike is never saved back onto a strike it has already left.
