I paid off my mortgage last year because of what I read from barrons. they recommended gnw a couple of years ago. bought 25K shares using opm at 9 sold it last year at 17+. paid off the remaining 285K in my mortgage. luck was on my side at that time because a month after I sold, gnw tanked.
in retrospect, I could have lost my shirt too, as I contemplated on hanging onto gnw at that time until at least it reaches its BV which at that time was around 30. whew!