St. Louis shows active churn within its SFR independent segment, with several operators doubling or nearly doubling listing counts while incumbents shed significant share. Rent growth is modest at +1.58% and median DOM of 24 days suggests a balanced, if not particularly tight, market.

Share movement in St. Louis is dominated by SFR independents on both ends of the ledger. Legacy Invest Realty, Triple Win Property Management, and Brandonview each posted large share gains driven by listing-count expansion, not incumbent displacement alone. On the losing side, 770 Management and Frontier Property Management shed substantial volume year-over-year. The new entrant cohort is notable: Blue Door Management entered at 318 listings and Frontier Property Mgmt LLC at 163, suggesting some share redistribution may reflect entity restructuring or rebranding rather than purely organic competitive shift.

The 7-cell quadrant data is unpopulated for this pull — cell-level DOM and rent metrics are unavailable, limiting structural segmentation analysis. Narrative context from the cohort indicates SFR independents dominate the active operator count and share-movement tables. Institutional SFR presence exists via Tricon Residential and Progress Residential, but neither surfaces as a dominant volume player at current listing counts. Large MF/BTR independent CYM Living LLC is the most visible non-SFR operator by share trajectory.

Tricon Residential posted +80pp share growth and operates across 18 markets, including Jacksonville and Phoenix — its St. Louis expansion fits a broader multi-market SFR institutional pattern. CYM Living LLC nearly doubled its listing count and carries a four-market footprint including Chicago and Indianapolis. Blue Door Management, entering at 318 listings as a hybrid operator, is the single largest new entrant and also active in Kansas City. The parallel appearance of Frontier Property Management as a top loser and Frontier Property Mgmt LLC as a new entrant warrants scrutiny for potential entity continuity.