Jack Selby regrets his use of margin to buy individual stocks after incurring significant financial losses when the market declined.

“I decided to do that one of them was robin hood which famously graham told me not to invest in my gosh and uh then it plummeted so i went in on margin and i bought some robin hood stock and then the market started going down and it continued to go down and uh yeah i got margin called”

High levels of margin debt make investors overly vulnerable to negative economic data.

“This is definitely not the market that you want to be heavily margin in. I'm telling you, and I talked about this as well, like I've seen people now get six figure margin calls and we're still so freaking close to the top of the market. Like, what the hell, right? So, why are you so deep in margin t”