Thanks for the feedback on this. I’ve typically used LTM in the past but I think I will go with TTM on this projects since it applies to historical periods whereas I think LTM works best for the current calculation.
It sounded more like an investment question than an off-topic question to me, so I moved it to the forum in which I thought Chad would get more (or better) replies.
Chad (unwisely, perhaps) trusts me to do such things.