Even following yesterday's 12% rally, there is "significant shareholder value to be unlocked" at Nielsen Holdings, Jefferies analyst Surinder Thind tells investors in a research note. A strategic review of the entire business is now in play with Elliot Management taking an activist stake, Thind contends. The analyst believes Nielsen's Watch segment could be worth more than all of the company currently. He estimates the Watch segment's value at $29-$33 per share. Further, Thind's "rough math" suggests a buyout for the entire company could be worth $30 per share. For any buyer, Nielsen's $8.3B of net debt is a "limiting factor on the price that can be paid," the analyst writes. He thinks the pool of potential acquirers is mainly financial in nature and not strategic. Thind keeps a Buy rating on Nielsen with a $29 price target.