I agreed to let him join us, even though it was 'against my better judgment'. [=even though I did not think it was the best thing to do]
In my 'judgment' [='opinion'], the stock has performed badly. = It is my 'judgment' that the stock has performed badly.
“Were his policies good or bad?” “I'll have to 'reserve/suspend judgment on' that. It's too soon to know.”
(..) It's true. I have lied about many, many things, both to others and to myself. But I find to my surprise that I cannot lie to you, nor escape your judgment. Please, Judith... Don't forsake me! BJORN: Pull! Up! (VIKINGS GRUNTING) - Slow! (..)2016 TvShow: Vikings Title: Portage Season: 4 Episode 8