CarMax Q3 Earnings Surpass Expectations, Revenues Decline Y/Y

CarMax reported fiscal Q3 2026 adjusted EPS of $0.51, beating the Zacks estimate of $0.32 but down from $0.81 a year ago, with revenues of $5.8 billion (vs. $5.7B estimate) and a 6.9% year-over-year sales decline. Used-vehicle net sales fell 7% to $4.54B as units sold dropped 8% to 169,557 despite a 0.9% rise in ASP to $26,383; used-vehicle GPU was $2,235. Wholesale revenues were $1,095.1M (down 6.3%), CarMax Auto Finance income rose 9.3% to $174.7M, SG&A edged up to $581.4M, cash was $204.9M with $1.17B long-term debt, and the company repurchased $201.6M of stock with $1.36B remaining on the buyback authorization; Zacks currently assigns a #5 (Strong Sell) rank.

Analysis

Market structure: CarMax’s print signals weakening consumer demand in the used-vehicle channel (units -8%, comps -9%) while ASPs hold roughly flat (+0.9%), implying inventory remains tight but foot traffic/affordability is slipping. Winners are aftermarket and service-exposed names (AAP) and scale operators with diversified revenue (THO’s aftermarket exposure, parts retailers) while leveraged, volume-dependent retailers (KMX, private/online resellers) are losers if unit declines persist. On cross-assets, a tougher used-car cycle raises credit stress risk for auto-loan ABS and could widen spreads by 50–150bp in a sustained slowdown; equity vols for KMX should rise near-term, FX/commodities impact minimal.

Risk assessment: Tail risks include a rapid credit shock (sharp rise in delinquencies) or auction-market collapse that forces GPU to fall >25% QoQ, which could push leverage covenants for issuers; regulatory risk around dealer financing practices is low-probability but high-impact. Immediate (days) risk is sentiment-driven equity downmoves; short-term (1–3 months) is next-quarter guidance and Manheim index moves; long-term (quarters–years) depends on used-car cycle normalization and CarMax Auto Finance performance. Hidden dependency: KMX’s P/L is increasingly reliant on CarMax Auto Finance and buybacks — a deterioration in ABS funding costs would compress EPS quickly. Key catalysts: Manheim wholesale index, Fed rate guidance, KMX FY guidance (next 30–60 days).

Trade implications: Direct: establish a tactical short of KMX (2–3% net exposure) or buy a 3–6 month put spread if guidance looks conservative; pair: long AAP (2% portfolio) vs short KMX equal notional for 3–12 months — aftermarket demand is more resilient. Options: buy a 3-month KMX 10% OTM put spread sized to 1–2% portfolio to cap cost; consider selling covered calls on any bounce if holding KMX. Rotate from retail cyclicals into aftermarket/parts (AAP, AZO selective) and RV/recurring-revenue names (THO) over the next 1–6 months.

Contrarian angles: The consensus is fixated on unit declines but underestimates buyback support and better-than-expected GPU vs estimates; if CarMax deploys the remaining $1.36B repurchase at current levels, EPS could be propped by 5–10% annualized near-term. Reaction may be overdone if wholesale prices stabilize — historically (post-2021 used-car normalization) prices rebounded within 6–9 months after wholesale dislocations. Unintended consequence: aggressive buybacks amid falling volumes can hide operational decline and amplify downside if credit conditions tighten; watch ABS spreads and retail inventory days as early warning signals.

Key Decisions for Investors

• Establish a 2–3% short-equity position in CarMax (KMX) within 1–5 trading days, or buy a 3-month put spread (10% OTM) sized to 1.5% of portfolio value; trim if GPU holds >$2,400 or Manheim index recovers >5% MoM.
• Initiate a pairs trade: go long Advance Auto Parts (AAP) 2% weight and short KMX equal notional for a 3–12 month horizon — expect relative outperformance of 8–15% if used-unit trends continue to decline.
• Buy protection on KMX via a defined-risk put spread (3–6 month) representing 1–2% portfolio; if implied vol rises >30% from current levels, roll to longer-dated protection or convert to a collar.
• Reduce direct portfolio exposure to unsecured consumer credit and lower-tier auto-loan ABS by 20% if Fed signals further tightening; redeploy proceeds into aftermarket/parts (AAP, selective AZO) and THO for 6–12 month defensive rotation.
• Monitor three triggers over next 30–60 days before scaling: (1) KMX guidance/comp update, (2) Manheim wholesale price moves ±5% MoM, (3) 30–90 day auto-loan delinquency rate change >25bp — if two of three worsen, increase short KMX exposure to 4–5%.