“A lot of people invest because of NOL's and the added value they bring. And there have been a number of companies that were acquired with large NOL's with no ownership change. It can be a huge asset.”
The only “investing” in the OTC related to NOLs is in the “story”. You won’t find an OTC stock that has been actually acquired for the value of the NOLs...and God knows you can’t swing a dead cat in the OTC and not hit a company with significant losses.