Spin-offs create value not because separation is magic, but because focus and attention shift after the event. Three quick checks before you act: 1. Name the mechanism in plain English: After a spin-off, each business gets its own management, capital allocation and investor base. Institutional forced selling often creates a temporary dislocation in the smaller entity. 2. Say why it matters for behavior or portfolio decisions: That forced selling creates a buying opportunity for investors who can do the fundamental work on the orphaned spin-off while index funds are forced to sell. 3. Set the review question: Ask whether the market is mispricing the mechanism or simply narrating it loudly. Market translation: A $2B division spun off from a $40B conglomerate often gets dumped by funds whose mandate does not include small caps, creating a temporary price disconnect. Failure mode: The mistake is assuming all spin-offs are automatic winners. Some are spun off precisely because they are struggling businesses the parent wanted to shed. The point is not to memorize the label. The point is to know what variable is actually doing the work.