Stocks to watch as the week ends: Fitbit (FIT) - the turn remains in place so use all dips below $6 to own the stock as Fitbit turns into a medical device company that will trade at multiples of sales. More research: Fitbit: Apple Watch Is No Threat Under Armour (UAA, UA) - the athletic apparel company continues a restructuring that will boost the earnings power to over $1 per share. Don't dump the stock too soon up at $20. Square (SQ) - stock is in nosebleed levels near $90. Investors are paying roughly $40 billion for a $1.5 billion revenue stream. Valuations like this rarely end well. Click on the Sign in/Sign up button in the top right corner to join for free to comment on your stock moves for tomorrow. Click on the Follow button to get daily blog posts from Out Fox The $treet. Disclosure: Long FIT, UA