What is the most reliable system on SPY?
Among the weekly systems that sell options on SPY, the most reliable closed in profit 96.6% of the time, over 625 trades (2010–2026).
Type of trade: Sell Put.
How it works
MetricAlgo does not ask you to invent a strategy. It puts thousands of systems already measured on history in front of you, lets you try the ones that convince you on your own capital and, when you are ready, tells you the moment the conditions appear.
01 Choose
Every system is a precise rule applied for years, with all its numbers in plain sight: how often it closed in profit, how much it lost in its worst periods, how long it took to recover.

02 Size
Enter your capital, your broker’s fees, leverage and number of contracts: the platform replays the system’s history with your parameters and shows whether it fits your risk profile.

03 Apply
Turn on monitoring for the systems you sized and get a notification when the conditions appear. Then follow every open trade until it closes.

Inside a system
Every system has its card, and the card shows the uncomfortable parts too. That is where you see whether a system is right for you.




With the free plan you explore the library and look at every system. When you want to size them and get notifications, pick the plan you need.