PolicySource: Real Estate News
OneKey joins CRMLS’s SDNY suit vs Compass — 8th MLS seeks antitrust shield
Original headline: “OneKey joins CRMLS as plaintiff in lawsuit against Compass” — Real Estate News, Oct 27, 2026
Real Estate News’ Andrea V. Brambila reports (Oct. 27, 2026) that New York’s OneKey MLS (~40,200 subscribers) joined California Regional MLS’s amended federal complaint against Compass in the Southern District of New York — the eighth MLS asking a court to declare cooperation rules lawful and to bar Compass antitrust suits over public marketing of office exclusives. The filing adds New York’s Donnelly Act alongside Sherman and California Cartwright claims, cites a Sept. 8 Compass demand letter (deadline extended to Oct. 20) that OneKey refused, and alleges Reffkin warned in a March 21 letter that litigation was likely; OneKey says it has issued five fines to Compass agents (one $1,500 paid, one unpaid, rest waived). A Compass spokesperson told REN that seven of the top 25 MLSs already allow public marketing of office exclusives without fines across ~340,000 agents in 12 states, and pointed to that record as evidence the MLS warnings have not materialized.
Our take (opinion & analysis, not reporting)
For NYC / Long Island / Hudson Valley agents on OneKey: this upgrades the earlier demand-letter standoff into active SDNY litigation alongside CRMLS — confirm in writing your brokerage’s Coming Soon / office-exclusive / public-marketing rules before you advertise off-MLS. If you are at a Compass-owned brand and receive an OneKey cooperation fine, ask your broker how claim assignment or fine coverage works before you pay out of pocket. Agents elsewhere: count OneKey as another MLS choosing declaratory relief over rule changes; keep local Clear Cooperation scripts current until a court rules.
What people are saying online
RISMedia (@RISMediaUpdates) posted breaking coverage that OneKey joined CRMLS’s lawsuit against Compass, citing months of emailed litigation threats from the CEO and noting the MLSs want an injunction barring Compass from suing over listing rules.
Sources: RISMedia breaking (X)