Kristen Parillo and Ryan Finley discuss the Ninth Circuit's new opinion in Altera v. Commissioner upholding a regulation requiring that parties to a cost-sharing arrangement share stock-based compensation.

For additional coverage, read these articles in Tax Notes:

• Altera, the Sequel — Jurisprudence Catches Up With BEPS
• Altera Decision Revives Commensurate With Income Standard
• Ninth Circuit Again Upholds Cost-Sharing Regs in Altera