You are not right about it being margin because I'm cash only and have always been a cash only day trader, for years & years & years, believe it or not.
And there is such a list.
I forget its nomenclature, but there is one.
Someone else... can they remember?
TIA
IW
"Just my opinions, folks. Do your own due diligence & make your own decisions. DO NOT... I repeat... DO NOT make any investment decisions on my comments. They are my opinions. That's all they are... OPINIONS."