How do I report loss for a bankrupt stock as original stock was deemed worthless, but I did receive diluted number of shares in re-emerged company, but not trading yet?

[jjlifka]

All original shares of company were deemed worthless and cancelled in bankruptcy. Stockholders received limited new shares at less value when company emerged from bankruptcy.

[Opus 17 · Accepted solution]

You don't have a loss until you sell the new shares.  Then you will have a realized loss and can deduct it on schedule D.