Tom is correct regarding the allocation of basis (my bad)...although like many IRS rules, this doesn't make sense to me and re-figuring the basis is impractical if you don't know your basis when you first acquired the MetLife shares. Most of my clients have no idea what their basis is because they acquired the MetLife shares a long time ago (before cost basis reporting became mandatory in 2011). Since the dollar amount of the fractional share is so immaterial in this instance, I would just use a cost basis of zero and move on.
