Earnings breadth Record breadth on the surface, extreme concentration underneath

Eisman (Jun 12): the headline hides the breadth problem — Q2 S&P earnings growth looks "very, very strong" at +22.6%, but a huge slice is energy (expected >100%) and tech (~60%), with materials ~30%; strip those and every other sector is single-digit, healthcare outright negative. A K-shaped tape resting on two or three sectors. Uzo (Jun 22): the AI-capex earnings boom is real and load-bearing — forward S&P 500 earnings have climbed ~25% on a 252-day basis (the highest reading back to ~1990), with Q1 growth in the high-20s and the Magnificent Seven up ~22%, "dragging the market upward kicking and screaming" — the same narrow-leadership concentration, read from the bull side. Singh (Aug 9): Q2 headline S&P EPS growth 47.4% vs 23% expected, a record 88% beat rate across sectors, supported by nominal GDP +6.5% y/y (8.1% annualised) — "earnings are a nominal calculation." But Micron alone contributed $25 of index EPS, ~25% of the S&P's Q2 earnings growth, and ~20 points of the headline is paper gains. 2026-AUG-05/07/10/11 — CNBC Halftime, the earnings-are-real case: Waldron (Goldman, via Aug 5): Q2 was "the 7th consecutive quarter of double-digit earnings growth… and recently it's broadening" — 29% growth with 65% reported and an 85% beat rate. Lebenthal's index arithmetic: 8250 needs ~5%, and 5% higher on most of the top ten "would not hit an all-time high" — "so you don't need much from momentum." Link (Aug 7): 48% earnings growth, 15% revenue growth, 250bp of y/y gross-margin expansion — "and the equal weight is actually outperforming the market weight"; Simpson: "nobody's guiding down, they're all guiding up." Firestone (Aug 10): equal-weight +15% ytd vs 13% cap-weighted, healthcare +15% in three months — "it is not just about 7 to 10 names"; Santoli's constraint: with yields and oil up "the market is not going to be very broad" — the Nasdaq-100 beat the equal-weight by 7 points in seven sessions. Brown (Aug 11): through 80% of the S&P by cap, growth is 28.3% excluding tech (32% with it), the net-income margin was revised up mid-season to 15.6%, sales +15.2% (300bp above two-months-ago expectations), 10 of 11 sectors grew profits — "throw the narratives about it's all AI, or it's so narrow, in the garbage." Belsky cites Citadel's Rubner: "the steepest earnings revision path since at least 2000." 2026-AUG-13 — Joseph Carlson, relaying Pershing Square's Q2 letter: with the S&P up ~10% through six months, just two of the index's 24 sectors — semiconductors and tech hardware & equipment, 8% of the companies and 22% of market cap — contributed nearly 85% of the YTD gain, leaving more than 90% of the S&P 500 collectively responsible for under 2% of the return. Ackman used the dispersion to deploy $5B of cash into the ignored bucket; Carlson reads it as his own left-behind-quality mandate. AUG-16 (Jay Singh, SSR): blended S&P Q2 revenue growth reached ~15%, the highest since 4Q21 (16%) and off a non-COVID base, with the estimate path 9.5% (Mar 31) → 12.2% (Jun 30) → 15% and all 11 sectors positive. But the concentration is the story: IT grew +35.9% (semis +77%, hardware +31%, software +18%, IT services just +4%), and excluding IT and energy the index's revenue growth falls to 9.7%. 2027 revenue growth is still modelled at a high 8.4%. 2026-AUG-19 — Halftime (Talkington / Terranova): Q2 index growth printed 51.6% (Q3 expected ~29%, Q4 ~26½%), and Talkington discounts it explicitly: "you really need to back out 20% of that" for a handful of giant names — "and within tech, it's really NVIDIA and Micron skewing that even more. The earnings are outsized." The breadth check on the harder line, from Terranova: "revenue growth hit on 11 of 11 sectors in the most recent earnings report." Her forward tell: "looking a year from now, I do think it's the rate of change of earnings — if that comes down, that's when people start questioning whether this rally is long in the tooth." 2026-AUG-30 (Jay Singh, SSR call): with 90%+ reported, revenue growth is tracking over 15% and adjusted EPS growth 31% — "one of its best earnings seasons this century," and roughly three times the long-term average, a level "typically only seen in post-recessionary environments" that normally coincide with easing policy. Breadth is genuine: ex-Mag 7 +20.7%, the median company +14% EPS and +6% revenue (both accelerating), ~90% beat EPS by an average 29%, 75% beat revenue by 3%, 10 of 11 sectors growing and 8 in double digits led by energy, communications and discretionary. Margins are a record 16.9%, +400bp y/y and the highest since 2009, with 8 of 11 sectors and ~60% of companies expanding. New observation: splitting large caps by whether they have specific AI use cases, "those using AI have garnered a greater share of earnings growth, positive revisions, and margin expansion." The dependency: AI capex accounted for ~70% of S&P earnings growth over three years, hyperscaler capex is on track for $700B+ (+90%) this year against consensus of only +30% in 2027 — "2026 [may] be the year where AI capex growth peaks." 2026-SEP-01 (Sonders/Schwab, Master Investor): the market-cap concentration problem has eased but the earnings-growth concentration problem has not. For calendar 2026 vs 2025 S&P EPS growth, NVDA alone is 18% and MU another 14% — "one third of all S&P expected earnings growth in 2026 is a function of two companies" — and the top 10, which brings in Chevron and Exxon at roughly #9/#10, is two-thirds. Offset: 10 of 11 sectors saw an improving earnings profile through Q2 reporting, "just not meaty enough when you do the math for a cap weighted index." A high-profile miss therefore hits twice — psychology, then a mechanical ratcheting-down of index estimates. 2026-SEP-08 (CNBC Halftime, Belski): the bull case is the other 493 — "what's also rallying are the earnings numbers of the other 493 stocks… I don't underestimate how strong the cash flow is in the earnings revisions… including financials and communication services. Very strong revisions the last part of the year." Offered as the reason small caps are working despite higher oil and higher yields.