How many Zorro users know that only one broker plugin included in Zorro supports combo order type before he/she chooses Zorro as primary automatic trading platform? Or you have to pay for this function by yourself so they'll develop one for you.

Am I alone here?

Very curious.

I developed the Ally Invest plugin and implemented options combo orders.

The source code is here:
https://github.com/AndrewAMD/AllyInvestZorroPlugin

I added the feature because I wanted the feature.

Whereas, there are various closed-source plugins by oP group. Simply ask nicely for the new features you want, and they may or may not decide to implement it.

There's nothing to stop you from, say, developing your own version of any plugin. But it may or may not be worth your time.

Thank you Andrew for your kind reply.

As a trading platform, it's essential to provide all the functions traders can get directly through broker's platform, it would be nicer if Zorro puts all the functions they have not implemented on their comparison page so people can truly understand what the pros and cons are if they use Zorro. Not every one is programmer and people are smart enough not to use entry level scripts(I'm not talking about your plugin here, pls don't misunderstand) to do serious live trading. The most annoying part is, you have been on the road, all of sudden, you realize there might be lots of, you don't even know how many, hurdlers still ahead, you have no idea if you can afford to have a working strategy. It's a huge waste of time, money and energy. Maybe the only option left is to drop.

SAD

All platforms have their own trade-offs. I think Zorro has a pretty good value-to-cost ratio.

A combo order is nothing more than a series of orders placed simultaneously. There may or may not be cost savings with a combo, and this depends on which broker you are using. You can make a virtually identical system with or without combos.

You would need lots of volume for the difference to be non-negligible. Why would this of all things be a deal-breaker?

Like I said, if you want a feature for your plugin of choice, ask for it.

If you have written at least one Zorro script, you are officially a programmer. Congratulations!

With my broker IB, when I trade option spreads, if entered, all legs entered, if not, none. If place orders for each leg respectively, you might end up naked call or put because some legs might not get filled, which is risky, you definitely won't do that. It's not identical with combo order. That's the deal breaker.

Are there any diffs with ALLY on this front? I guess that's why you developed the combo feature in your plugin, right?

Regarding the programmer thing, the point is, it just likes you buy a car, you expect the car comes with a brake, when the auto maker tells you that it doesn't, you have to roll your sleeve up to install one by yourself, what would you do? Either you're a mechanic, you buy it for a good deal, or you simply walk away to buy another car.You get choices BEFORE you decide.

Thank you

As the systems architect, you are responsible for risk management.

Did one of your options trades fail? No problem, close the other legs of your strategy. It’s not hard.

It has nothing to do with HARD or not. If that's what you have to do, why would you use this platform in the first place? Just for fun?

"Why would you use this platform in the first place?"
For me, even considering the shortcomings of zorro (charting comes to mind...), zorro is a LOT more flexible than other platforms I've used. Sure, you might need to jump through some hoops at some point, but I've never come up with a strategy that I can't implement in zorro.

I am a Zorro's fan, but if the platform, does not have functions that for your trading style are a "must to have", obviously you have to pick up another platform that has such features.

I do not see many other alternatives.

my 2 cents

You nailed it.