**Modest industry tracking for the Blumhouse supernatural horror "Other Mommy," opening October 9, underpins the closely bunched Polymarket ranges around the $21M–$33M+ thresholds.** Jessica Chastain’s dual-role star power and the studio’s recent October horror results provide a floor, yet the film lacks the built-in franchise audience that propelled titles like *Five Nights at Freddy’s*. Same-day competition from Sony’s *The Social Reckoning* and a broader slate of mid-budget genre releases add uncertainty, keeping no single outcome above 26% implied probability. Traders are weighing presale momentum, preview numbers, and early word-of-mouth against historical comps such as *Smile 2* and *Black Phone 2*. The next key catalysts—Thursday night previews and Friday’s opening day updates—should clarify whether the film breaks into the higher brackets or settles nearer the $15M–$25M analyst forecasts.