Dude don't do it. As long as you can make your mortgage payments on time just keep doing that, hold onto the stocks long term, as even if they dip in the short term they most certainly will go up mid to long term (or just re diversify) If you want to go a safer route, sell the stocks and put it in a betterment account, its giving me back 11% YTD, and haven't seen it really dip below 6%. Why give up solid returns to pay off a low interest (and tax friendly) mortgage?