**Strong investor opposition and the proposal's uncertain path to adoption underpin the 83.5% market-implied probability that the SEC will not remove the quarterly reporting requirement.** The May 2026 proposal introduced an optional semiannual Form 10-S alternative to mandatory Form 10-Q filings, championed by Chairman Paul Atkins and aligned with prior administration calls for flexibility, yet it drew record comments highlighting risks to timely disclosure, capital allocation efficiency, and investor monitoring. The SEC's Investor Advisory Committee formally recommended against eliminating quarterly mandates in June 2026, citing structural importance to U.S. markets, while recent October 2026 commentary reinforces concerns over potential increases in information asymmetry. With the comment period closed and no final rule or adoption timeline announced, trader consensus reflects the substantial regulatory and stakeholder barriers still facing meaningful change.