My typing fingers always want to misspell Sprint (NYSE:S) as spring, and indeed hope springs eternal at the third (or fourth) largest cell phone network operator. Losses keep piling up, $151 million last year. The current market cap of $19.76 billion is just a small premium over the $16.9 billion in sales it achieved in 2014. (The ratios at Verizon (NYSE:VZ) and AT&T (NYSE:T) are closer to 1.5 times sales.) Yet despite rising interest in the stock by shorts insiders keep buying. Read more