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State Street10/12/2026updated 10/17/2026

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Citable research brief

Core conclusion · Tlines extraction

State Street notes S&P 500 aggregate earnings beat consensus by 16.8% in Q1 2026 and 26.0% in Q2, the largest surprise in a decade, with 84.6% and 85.8% of companies beating versus a 76.6% ten-year average. Gains were concentrated: Technology, Communication Services and Consumer Discretionary produced roughly 75% of earnings growth each quarter. Expected Q3 growth rose to 29.5% from 26.7%. Analysts lifted CY2026 EPS estimates 15.6% and CY2027 15.3% since February, a supportive but higher bar.

Institution: State Street
Published: 10/12/2026
Research topic: S&P 500 · US 10Y Treasury
Time horizon: February 2026 · 2026 · 2014

S&P 500 · SPX US 10Y Treasury · US10Y

Key arguments

First-half beats were genuine: earnings outpaced forecasts even as estimates rose, not just beating lowered bars.
Strength was broad in direction but concentrated in magnitude: 10 of 11 sectors grew, with Technology, Communication Services and Consumer Discretionary generating about 75% of growth.
Rising forward estimates let earnings growth, not multiple expansion, carry more of future returns, while raising the hurdle for the next season.
Q3 is the key test: if beats continue and revisions broaden, the earnings improvement looks durable; narrower leadership or flat estimates would signal expectations outran fundamentals.

Key numbers

Q1 2026 S&P 500 aggregate earnings surprise: 16.8%
Q2 2026 S&P 500 aggregate earnings surprise: 26.0%
Share of S&P 500 companies beating Q1/Q2 2026: 84.6% / 85.8%
Expected Q3 2026 S&P 500 earnings growth (vs 26.7% end-June): 29.5%
Increase in CY2026 EPS estimate since end-February (to $362.65): 15.6%

Main risks

Earnings leadership is narrow: about 75% of growth comes from three sectors, so weakness in those names could quickly undercut the index-level story.
Rising consensus estimates raise the bar for results; in-line delivery may no longer suffice.
The article frames Q3 as pivotal: a stabilization in forward estimates would suggest expectations have run ahead of fundamentals.

Corresponding source evidence

The median company beat expectations by 5.8% in the second quarter, well below the 26.0% aggregate surprise at the index level (FactSet, as of 10/2/26).
Consensus CY 2026 EPS estimates increased from $313.72 at the end of February 2026 to $362.65 on October 2, 2026, a gain of 15.6%, while CY 2027 estimates rose from $363.54 to $419.32, or 15.3%, over the same period (FactSet, as of 10/2/26). · February 2026
Higher forecasts provide a supportive backdrop for US equities by allowing earnings growth, rather than further multiple expansion, to carry a greater share of future returns.

Context: the conclusion is Tlines' automated extraction, not the institution's wording. Quoted evidence is publisher wording. Scope and date must travel with the conclusion.

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