Here's a few links. The third one shows why A-turd is interested: when someone does this, the SEC fines the broker as well.
Layering is basically when someone places a bunch of orders with no intention of them being executed, solely to scare other people into buying or selling. So you place a bunch of buy orders to make it look like there's all this buying pressure, hoping people jump ahead of you to buy. Price manipulation -- spoofing orders.
A-turd probly just has some software that pulls up people who place a large order and then cancel it if it doesn't get executed. They see it as a possible manipulation, where as all of us traders understand you might want to scale into a position and that if you place an order and it's not executing on one security and you see a better opportunity elsewhere, you cancel and place your scale orders over on another stock. Nothing wrong with that. I'd explain this to them and hopefully you can get it resolved.
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