**The SEC’s May 2026 proposal to permit optional semiannual reporting via a new Form 10-S in place of mandatory quarterly Form 10-Q filings has encountered overwhelming resistance, anchoring trader consensus around an 83.5% implied probability that the quarterly requirement remains intact through year-end.** Record comment volume exceeding 280,000 letters—more than 97% opposed—along with explicit rejection by the SEC’s own Investor Advisory Committee, has highlighted concerns over reduced transparency, heightened volatility, and governance risks. Although Chairman Paul Atkins continues to defend the elective framework, the absence of a final adopting release, combined with procedural review timelines that point toward potential action no earlier than 2027, makes formal elimination of the quarterly mandate by December 31, 2026, improbable. Key near-term catalysts include completion of comment analysis and any revised economic assessment that could further slow or modify the rule.