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I dont want to get into details, but the problem I am running into is liquidity. Running the formula would do extremely well "it seems" if I could buy every single stock that meets my strategy, but once I tone the list down to only ones that have great liquidity (lets say 1 million), to ensure...

deepfkvalue: Yes, was definitely looking more for info about means to implement versus whether or not the strategy will work. Thank you for your thoughts on this. I do also hear NinjaTrader mentioned a lot online. I will check that out too. Thank you! On another note, I have done more testing...

kmiklas: No doubt it sounds like an uphill battle if not a roadblock completely. Thank you for the info for sure!

OK, thank you for the update. I am going to look into IB since they are so commonly talked about.

dholliday: Excellent ideas and info. Thank you for taking the time to share. I have so much to learn still and much research left to do, but I'll get there.

OK thank you. So I need to look for Websockets.

OK, so doing a bit more general reading, it looks like if I were to try and implement this strategy, technically one of the issues might be the amount of API calls that I can make per minute. I don't fully grasp this yet, so please bear with me. Lets assume I use someone that has a API limit of...

terr: Thanks for the continued info on the 390 rule. I will dig deeper on that for sure and I will also dig deeper on the AFAIU liquidity topic. Thank you for all your thoughts. dholliday: "Liquidity disappears fast as you go down your list of 3000 stocks. I filter on stocks with a volume of...

Thank you for the follow up and the insights. I truly appreciate it!

I was poking around on Reddit and someone said this "390 orders rule applies to options orders only. Stock orders, futures orders, forex, etc. don't apply." Is this false? EDIT: Found this document from 2016 which seems to back up that statement, but not sure if it has changed again since...

Hmmm...I did not know that one. Thank you for that not so exciting baseball bat to my idea lol....dang it. Time to research professional trading costs :-( . Or else find a way to hone down my picks to less than that number....this sucks

FWIW, right now on my spreadsheet during back testing (about 28 million data points), for each transaction that I would have have executed, it is calculating the % gained or lost on that specific trade. Then once every single trade has been tabulated for the 50 years of data, it sums up that...

Well to be honest, as of right now, it is as simple as "it will go up", but in your scenario, if the .01 gain happens to be a $1 stock, that's a 1% gain and I would love to have it :) . Once again though, this is assuming not having a per trade fee or else everything changes completely. And on...

Brain fart. Just thought about this. Using EOD Historical data like I have been doing WILL allow me to test option #2 in my last post. This is how. If I place a limit order for buying at or below open price, going back and looking at historical data, if the 'low' for that same trading day is...

Agreed. I am leaning towards Option 1 as well. I am truly curious how quickly the scan (ALL stocks) and order (maybe 2000 stocks) process could actually be done. 1 minute? Less? More? In reality, the more deeply I think about it, the only thing that I know must happen is the market sells at...

If pre-market automated scanning and trading will work on pre-market information, I guess another option could be to scan pre-market within moment of open and look at 'last' sale price, and use that to run my picks instead of 'open' price, assuming that the numbers would be close. And only place...

Thank you for sticking in there with me. Let me walk this through in my head. Option 1: Wait for open, scan all stocks on market for any that meet my criteria (open price compared to XYZ), which could potentially be half the stocks on the mark, and then placing market or limit orders as fast as...

But how can I do that if my purchasing decisions are literally based on the open price compared to some previous day(s) data. To do the orders pre-market would entail me predicting the open price, when in fact, i am needing/using the open price to make my purchase selections. Unless there is a...

Also, when you say get market data for the 2000 stocks would take time, would that be any kind of data at all, or just more complex intraday type data which I dont need. I am only using EOD type data (open, high, low, close, volume). Is that still going to take a long time? How long would you...

Thank you for the thoughts. Here was my thinking on limit orders: For shits and giggles, lets assume all the stocks I pick will close higher than open based on my strategy (yeah I know lol). Assuming that, another option besides a market order is that I could also place a "limit" order, as soon...