**Strong pre-release tracking and Blumhouse horror momentum position 27-30M as the market favorite for Other Mommy’s opening weekend, with 30-33M close behind at 20.5%.** Jessica Chastain’s dual-role star power, James Wan’s Atomic Monster production, and Rob Savage’s direction have driven upward revisions in late-September forecasts, shifting estimates from an earlier $15-25M range toward the mid-to-high 20s or low 30s. October timing aligns with peak spooky-season demand, while trailer engagement and genre pedigree provide solid presale indicators. Competition from the lower-tracking The Social Reckoning on the same date further supports the consensus range, though actual results will hinge on final theater counts, word-of-mouth after early screenings, and audience turnout amid broader October slate dynamics.