If Starboard Wins Board Seats at CarMax, Which Operational Levers Gets Pulled First?
Starboard Value's proxy contest at CarMax is one of the more consequential shareholder battles in the used-car sector in years. With CarMax stock down roughly 42% over the past twelve months—a staggering gap versus AutoNation's +16% and Lithia Motors' relative stability—the activist hedge fund has a compelling performance narrative. The harder question is: if Starboard wins board representation at the June annual meeting, what actually changes?
The Case for Intervention Is in the Numbers
CarMax's financial profile tells a story of structural margin erosion, not just cyclical bad luck. At the peak in fiscal year 2022 (ending February 2022), CarMax generated $1.55 billion in operating income on $33.2 billion in revenue—a 4.7% operating margin. By fiscal year 2025, operating income had collapsed to $789 million on $28.2 billion in revenue, a 2.8% margin. That's a $760 million annual operating income decline despite the business remaining roughly subscale-profitable.
The culprit isn't revenue alone. SG&A expenses—the single most controllable cost line—rose from $1.94 billion in FY2021 to $2.44 billion in FY2025, even as revenue contracted from its $33 billion peak. SG&A as a percentage of revenue swelled from 7.0% at the FY2022 peak to 8.6% today. Meanwhile, peers AutoNation and Lithia Motors trade at roughly 10–11x EV/EBITDA. CarMax trades at 21x—not because investors assign it a premium, but because its EBITDA has shrunk so dramatically that the multiple looks stretched.
Return on invested capital, the metric activist investors historically target most aggressively, sits at just 3.1%—barely above rounding error, and well below Lithia's 7.3% and AutoNation's 9.9%. For a business with $22.6 billion in enterprise value, that capital productivity gap represents enormous latent value.
Lever One: SG&A Surgery
The first and most direct target would be selling, general, and administrative costs. CarMax's omnichannel transformation—announced with considerable fanfare circa 2020-2022—was accompanied by a significant buildout of technology, customer experience, and headcount infrastructure. The bet was that a seamless digital-to-physical buying experience would support higher volumes and justify the fixed-cost layer. Volumes haven't followed.
With ~30,000 employees and $2.44 billion in SG&A, CarMax spends roughly $81,000 per employee annually in overhead. Starboard would almost certainly push for a meaningful headcount review, technology spend rationalization, and store-level P&L accountability. Even returning SG&A to 7.5% of current revenue—roughly the FY2023 run rate—would recover approximately $300 million in annual operating income.
Lever Two: Inventory Velocity and Working Capital
CarMax carries $3.93 billion in vehicle inventory as of the most recent fiscal year-end—up from $3.16 billion in FY2021. For a retailer processing $28 billion in annual sales, faster inventory turns would meaningfully free up working capital. Activists typically push for tighter days-in-inventory targets, more dynamic pricing algorithms (which CarMax technically has), and potentially a more aggressive posture on wholesale disposition when retail demand softens. A 10% improvement in inventory turns on a $3.9 billion base is worth roughly $390 million in released working capital.
Lever Three: CarMax Auto Finance Optimization
CarMax Auto Finance (CAF) is the sleeper asset in this story and arguably the most complex operational lever. The company carries $19.4 billion in total debt, the overwhelming majority of which is CAF receivables. The finance arm acts as both a competitive differentiator (below-market rates attract buyers) and a capital-intensive drag. Starboard would likely scrutinize CAF's credit standards, provision rates, and the capital allocation decision around how much of the loan book to hold on-balance-sheet versus securitize and distribute. Shifting more volume to third-party lenders and reducing CAF's retained balance would lower balance sheet risk and free capital for buybacks.
FY2025 saw CarMax repurchase $428 million in stock—a fourfold increase from FY2024's $94 million. That acceleration may reflect pre-emptive responsiveness to Starboard's pressure, but activists typically want a formalized capital return framework rather than ad hoc buybacks.
Lever Four: Store Footprint Rationalization
CarMax operates approximately 230 stores. The company's growth thesis assumed that physical reconditioning infrastructure would remain central to the used-car value chain. Starboard may challenge that assumption, pushing for closure or sale-leaseback of underperforming locations in markets where density doesn't justify fixed costs. AutoNation and Lithia have historically been more aggressive about portfolio culling. Each store carries meaningful overhead; rationalizing the bottom quartile could unlock both SG&A savings and real estate value.
Peers Set the Benchmark
The comparison to AutoNation (EV/EBITDA: 10.7x, ROIC: 9.9%, EBIT margin: 4.5%) is instructive. AutoNation operates a franchise dealership model with structurally different economics, but the capital return discipline is the lesson—AN has returned billions via buybacks while maintaining tighter cost structures. Lithia, despite a more leveraged post-acquisition balance sheet, generates 7.3% ROIC. The message from the peer group is clear: the used-car and auto retail business can be run more efficiently than CarMax has managed recently.
What the Market Is Watching
Free cash flow is recovering—FY2025 generated $156.5 million versus near-zero in FY2024—but at an EV/EBITDA of 21x and a forward P/E of 16.9x that implies earnings growth the business hasn't delivered, the stock's valuation depends heavily on margin recovery, not just volume normalization. If Starboard wins even two board seats, the market signal will be that a restructuring agenda is credible and near-term. The first board meeting after the vote—and the accompanying analyst communication—will be the real tell for which levers management agrees to pull.