The IRS has issued a notice targeting multiple tax-aware trading strategies, signaling increased scrutiny on transactions designed to manufacture or defer tax outcomes. The guidance employs broad language aimed at curbing specific uses of in-kind redemptions and other complex financial arrangements. The notice explicitly identifies several strategies under review, including Section 351 exchanges, box spread strategies, and straddles. This regulatory action indicates a focused effort to close loopholes associated with these mechanisms, potentially impacting traders and funds utilizing these structures for tax efficiency.