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Investment Memorandum · Preview

For informational purposes only. Not investment advice.

Marathon Petroleum Corporation

MPC

NEUTRAL

May 27, 2026

Research Conclusion

HOLD at $258.89. PWFV ~$229 (stock is 13% above PWFV — above-mid-cycle crack spread premium embedded). Composite FV ~$229 (-12%). ACCUMULATE below $215. BUY below $185 (bear-case pricing + meaningful margin of safety).

Company Overview & Moat Assessment

Marathon Petroleum Corporation is the largest independent US petroleum refiner by throughput capacity (~3.0 MMbbl/d nameplate across 13 refineries). Post-Speedway divestiture, MPC operates two core segments: (1) Refining & Marketing — cyclical crack-spread-driven earnings with FY2025 R&M margin $16.87/bbl and ~94% utilization; (2) Midstream (MPLX LP) — fee-based stable cash flows providing $2.8B distributions to MPC. FY2025: Adj. EBITDA $11.96B; FCF $4.77B; cumulative post-Speedway capital returns >$29B. Market cap ~$75.6B.

▲ Bull Case

  • ◆Crack spreads remain structurally elevated $18-22/bbl due to 900 kb/d permanent US capacity closures, Latin American underinvestment, and growing US product exports; MPLX stake repriced at full 10x EV/EBITDA; combined re-rating: $340-380 (+31-47%)
  • ◆Hormuz premium sustains elevated product prices; buyback accelerates reducing share count 260M → 230M by FY2028; EPS accretion offsets minor crack compression; target $310-320 (+20-24%)
  • ◆MPLX distribution doubles from $3.2B to $5B+ over five years via Permian NGL buildout; MPC's ~63% stake receives $3.2B/yr enabling aggressive buyback; shares retire to <200M; EPS power exceeds $40/share; target $350+ (+35%)

▼ Bear Case

  • ◆Crack spread normalization to $13-15/bbl as China demand disappoints and OPEC+ unwinds cuts; Adj. EPS $16-18; multiple de-rates to 9-10x; stock corrects to $160-180 (-31-38%)
  • ◆MPLX distribution growth stalls amid rising interest rate repricing; MPLX yield rises 7% → 9%; unit price falls $50 → $38; MPC stake value compresses $8-10B; SOTP drops to $165-180 (-29-33%)
  • ◆Major unplanned refinery outage at Garyville (~590 kb/d) or Galveston Bay (~585 kb/d) coincides with $13/bbl crack environment; FY2027 adj. EPS falls to $8-12; stock corrects to $130-160 (-38-50%)
Primary Debate on Wall Street

“Is the above-mid-cycle crack spread ($16-18/bbl) a structural new normal or cyclical peak reverting to pre-COVID $12-13/bbl? Bull argues 900 kb/d permanent US closures and 3-5 MMbbl/d product exports create structural 93-96% utilization floor, shifting mid-cycle to $15-18/bbl. Bear contends structural case is fully priced; global capacity additions and EV adoption compress margins toward $13-15/bbl by FY2027-2028. Our view: Mid-cycle is $15-17/bbl (up from $12-13/bbl), not $18-22/bbl. At $258.89, market prices $17-18/bbl as sustainable — fair but not discounted.”

Top Catalysts
  • ◆Q2 2026 earnings (Aug 2026) — driving season crack spread sustainability test; R&M margin $/bbl above $17 confirms structural thesis
  • ◆MPLX distribution announcements (July-Aug 2026) — 60% probability of raise; bull signal validates distribution growth trajectory
  • ◆Crack spread weekly EIA data (ongoing) — real-time leading indicator; watch for sustained $16-18/bbl or normalization signals
  • ◆Q4 2026 / FY2026 full-year results (Feb 2027) — buyback pace >$3.5B confirms capital return priority
  • ◆MPLX FY2026 full-year distribution guidance (Q4 2026) — if $3.2-3.5B trajectory confirmed, validates floor thesis
  • ◆Buyback acceleration (FY2026-2027) — share count reduction compounds EPS accretion independent of crack environment
  • ◆Hormuz diplomatic resolution (unknown, base 12-18 months) — 55% probability; potential bear catalyst normalizing product cracks
Top Risks
  • ◆Crack spread normalization to $13-15/bbl (35% within 18 months): High severity to earnings; mitigant is MPLX floor + mid-cycle EPS $16-18
  • ◆Major unplanned refinery outage (10-15%/yr per facility): Concentration at Garyville/Galveston Bay (~40% capacity); mitigant is insurance coverage
  • ◆MPLX distribution cut (10% probability): High severity if distributions fall below $2.5B/yr; only at risk if EBITDA falls >30%
  • ◆Crude oil price spike (Brent >$100) compressing margins (20%): Moderate; sour crude advantage and product tracking partially mitigate
  • ◆OPEC+ unwind + US production surge (25%): Moderate; lower crude costs help refiner margins; net effect mixed
  • ◆Regulatory/environmental permit challenges (10%): Low-moderate; existing plants grandfathered; restrictions help incumbents
  • ◆MPLX debt reclassified onto MPC balance sheet (5%): High severity; legal ring-fence prevents this; very low probability
  • ◆Energy sector multiple de-rate from rising rates >5.5% (25%): Moderate; MPLX LP repricing + refiner P/E compression at risk

Full Memo Continues

5 more sections, locked

  • ●
    Valuation Range & DCF
    Base/bull/bear fair-value range, WACC, terminal growth, sensitivity to revenue + margin assumptions.
  • ●
    Risk/Reward Assessment
    Position-sizing framework with explicit upside/downside skew and entry conditions.
  • ●
    Management & Capital Allocation
    Multi-year capital-allocation track record, incentive alignment, and management readout.
  • ●
    Monitoring Framework
    What to watch each quarter — leading indicators and inflection signals tracked by the analyst.
  • ●
    Unresolved Questions
    Open analyst questions and follow-up research items — the depth signal.

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Margin of Insight

For informational purposes only. Not investment advice.