Capital One

Capital One in 2026 is the result of the most consequential US financial merger of the 2020s. The $35B all-stock Capital One-Discover deal closed May 2025 (after a 14-month regulatory review), creating the third-largest US credit-card issuer by purchase volume and — crucially — the first major US issuer that owns its own payments network. Discover's network is no longer rented from Visa or Mastercard; COF now collects the interchange fee directly.

Revenue grew +46% YoY in Q1/2026 (largely merger-arithmetic), but the strategic re-rating is the interchange-fee captive economics. Discover network carries $620B in annual purchase volume against 7-8% pre-tax margins versus the 0.5-1% margin Capital One previously paid Visa/Mastercard. If management can migrate even 25% of legacy Capital One card volume onto the Discover network by 2028, that delivers $2.5-3B in incremental annual pre-tax income — pure margin expansion without a single new customer.

The 2026 catch is the loss-rate cycle. Capital One's classic moat is subprime credit-card underwriting, where charge-offs run 6.5-7.5% (vs. 3.5-4% at JPMorgan or AmEx). Net charge-offs in Q1/2026 were 5.8% — the lowest in 7 quarters — but the question is whether this is the new cycle-low or the start of a US-consumer rollover. Buffett's Berkshire Hathaway built a 5.4M-share position during the 2023 SVB-banking-crisis at an average ~$110, currently sitting on a 72% gain.

Berkshire Hathaway built the Capital One position during the March-April 2023 banking-crisis drawdown, disclosed at 9.9M shares in Q1/2023 13F-HR. The position has been trimmed to 7.2M shares as of Q1/2026 (~$1.36B value), with the most recent reduction of 1.1M shares in Q4/2025 at an average price of $186 — classic Berkshire 'lock in profits when you have a 70%+ run' behavior, not a directional change.

Other notable smart-money: David Tepper's Appaloosa increased his Capital One position by 80% in Q1/2026 to 6.8M shares (~$1.3B) — the largest 13F-disclosed Capital One add by any active manager in 2 years. Stanley Druckenmiller's Duquesne added 1.4M shares to bring the position to 3.2M. Notable sellers: Wellington (rebalancing), no thematic exits.

Insider activity (Form 4): CEO Richard Fairbank has not sold a single share in the post-merger period (June 2025 onwards) — for context, Fairbank typically sells $40-60M/year on schedule. CFO Andrew Young bought 25,000 shares in February 2026 at $182 in the open market — his first open-market purchase as CFO. Two strong bullish insider tells inside 12 months.

Capital One trades at a forward P/E of 7.85× and a price-to-tangible-book of 1.3× as of May 2026. The PEG ratio of 0.2 is particularly striking — driven by the merger-arithmetic EPS surge through 2027. Comparable US bank/card peers — JP Morgan (12×), Bank of America (11×), Citi (9×), American Express (15.7×), Discover-standalone-comp (10×) — all trade meaningfully above. The bull case (Wells Fargo, Bank of America) values COF at $260 based on full Discover-network synergies materialization through 2028. The bear case (Morgan Stanley) at $215 assumes the credit-cycle turn compresses EPS through 2027. Wall Street analyst targets range from $215 (Morgan Stanley) to $310 (Wells Fargo), median $255 vs. current $189 — 35% upside before the 1.7% dividend.

1. July 21, 2026: Q2/2026 earnings — first full quarter of Discover-network migration metrics disclosure
2. October 2026: Capital One Discover Network Investor Day — management framework for migration completion by 2028
3. Q1 2027: DOJ first formal post-merger competition assessment — clears the consent-decree overhang if filed clean

Capital One is the most asymmetric large-cap US financial trade I can construct right now — and the under-discussed insider activity is the cleanest part of the thesis. Fairbank not selling any shares for 11 months, after a 17-year history of $40-60M annual sales, is the single loudest non-verbal bullish signal I have ever seen from a public-company CEO. Combined with David Tepper's 80% add and CFO's first open-market buy, this is institutional-level confirmation that the Discover synergy story is on track. The trade-off: Capital One is still 70%+ subprime credit, so a US-consumer rollover delivers a real 20-30% drawdown before the synergies hit. I size COF at 3% of my portfolio, with an add-trigger below $160 — at which point even a moderate credit cycle leaves you with a 6× P/E entry on a moat-creating merger story.