AT&T Inc.

▲ Bull Case

• ◆Convergence economics materially widen the narrow moat: Bell System data show bundling lifts household stickiness 5–10%; if T's convergence penetration rises 42% → 60% over 3 years, blended postpaid churn could fall from 0.89% to 0.75%, lifting Mobility EBITDA 8–12% and supporting multiple expansion from 10x P/E to 13x.
• ◆Buyback at 10% FCF yield is the highest-return capital use: $7B annual buyback retires ~280M shares (4% of float); cumulative 17% share-count reduction over 5 years drives Adjusted EPS CAGR of 12–15% independent of organic growth.
• ◆Business Wireline legacy runoff bottoming earlier than bear case models: Legacy revenue now only 7% of total; absolute EBITDA floor approaches $4B by 2030, ending structural drag; postpaid phone surprises from convergence bundling + iPhone 17 cycle could materially exceed 2026 guidance.

▼ Bear Case

• ◆Convergence churn benefit may be marketing-driven table-stakes, not structural moat: CMCSA and CHTR claim similar churn improvements on their bundles; if industry-wide, convergence becomes competitive requirement rather than differentiation, capping multiple re-rating.
• ◆Cable MVNO disintermediation accelerating: Combined Xfinity + Spectrum Mobile subscribers growing 20%+/yr; share-of-net-adds shifting away from incumbents, compressing Mobility EBITDA margin 2–4% over 3 years.
• ◆Fiber buildout cost inflation eroding returns: Current $1,400/passing could rise to $1,800; incremental ROIC on new fiber drops below 5.5% WACC, destroying the fiber growth narrative and forcing capex discipline that curtails net add acceleration.

“The central debate: Is AT&T's deleveraging + fiber-growth + convergence pivot enough to durably re-rate from 10x P/E to 12–13x peer-equivalent multiple, or do competitive intensity in postpaid wireless + secular Business Wireline decline cap upside? Bull thesis hinges on convergence churn benefit validating externally (not just management self-disclosure) and demonstrating step-function moat widening over 24–36 months. Bear thesis hinges on convergence being table-stakes across the industry (negating differentiation) and cable MVNOs eroding postpaid net-add velocity. Reverse DCF shows current price implies 7.0–7.5% WACC (vs CAPM ~6.0%) AND terminal EV/EBITDA compression to ~5.5x (vs T's 8-year median 7.0x) — a two-sigma conservative pricing that requires sustained operating deterioration. If either implied assumption inflects favorably, material re-rating ($40+) is probable.”

• ◆Q2 2026 earnings (July): Net adds validation + FCF guidance maintenance
• ◆Fiber 36M passings milestone (Q3–Q4 2026): Lumen integration validation
• ◆Fall 2026 iPhone 17 cycle: Postpaid phone net add surprises
• ◆FY2026 earnings (January 2027): FCF $18B+ delivery + Lumen full-year contribution
• ◆First dividend raise since 2022 (2027): Major sentiment unlock if FCF >$20B
• ◆50M fiber passings milestone (2028–2029): Bull case proof point
• ◆Convergence rate 50%+ disclosure: Central thesis milestone

• ◆Cable MVNO acceleration: Combined Xfinity + Spectrum Mobile growth >25%/yr compresses Mobility EBITDA 5–8%.
• ◆Fiber buildout cost inflation: Cost/passing rising from $1,400 to $1,800 drops incremental ROIC below WACC, destroying fiber growth return profile.
• ◆Spectrum auction (2027–2028): $10–15B outlay re-levers balance sheet above 2.5x target, compromises buyback plan.
• ◆Convergence narrative failure: If churn benefit doesn't validate externally, bull thesis loses primary moat-widening support.
• ◆Refinancing rate pressure: Annual $40–50M interest expense add per debt cycle compounds to material drag over 5 years; 100bps rate move ≈ $500M obligation swing.