Ah yes good ole Marty, he was my fav on Ruckeyser's show. I read his book(s) and bought his newsletter in the mid 80s and went on as a working stiff for the next 30 yrs lol. "cut loss and let profit run ..." is one of those dictums that makes complete sense but impossible to practice. basically it is another way of describing looking in the rear mirror. how can i tell a loser from a winner except in hindsight? lol
especially in "biotech values" land. take clvs for ex. from 7/14 to 10/15 it ran to 100+ only to crash due to roci unconfirmed data furnished to people like me.
then just last yr, based on ruca, it jumped 50% in 6/17 only to peter out back to 50 just last Feb. how can mr joe blow let his winner run with a horse like that?
when it crashed from 100+ to mid teens i lost all my profits & i had a lot of profits (big stake and avg of 40s) but i didn't lose money. i got back it in 5/17 betting on ruca p3 and bailed at mid 90s. i have no current position.