Poseidon members participate in structured composite review aligned to 100–200 unit dealerships generating $100K+ in monthly net profit. Sessions focus on margin structure, overhead discipline, departmental contribution, and performance sustainability.

Members utilize ARC’s LinUs® benchmarking platform to evaluate departmental gross mix, inventory capital exposure, reconditioning efficiency, and operational throughput — ensuring decisions remain grounded in measurable financial performance.

Poseidon emphasizes disciplined execution through structured moderation led by Rob Whistle, including financial deep dives, strategic planning sessions, and measurable accountability checkpoints.

Discussions focus on protecting and stabilizing $100K+ monthly net profitability, refining staffing structure, controlling overhead expansion, and maintaining margin integrity as operations mature.

Poseidon supports both single and multi-rooftop dealers navigating growth, leadership delegation, and performance alignment across departments or locations.

Unlike traditional dealer 20 groups that limit on-site visits to similarly sized operations, ARC's Poseidon Dealer 20 Group members regularly visit larger, best-in-class dealerships, to study from higher-level operations and leadership systems, learning from the best on how to stay ahead of the competition.  

Poseidon is reserved for 100–200 unit single and multi-rooftop dealerships achieving $100,000+ monthly net profit.  Enrollment remains intentionally limited to preserve confidentiality, alignment, and competitive separation.  

Dealers scaling beyond 200 units per month may consider ARC's Morpheus 20 Group or those specializing in luxury or exotic inventory may find the Midas 20 Group a good fit.  Fixed operations leaders may also benefit from the Adonis 20 Group while controllers and accounting leaders often participate in Athena 20 Group.