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AtlasEQ Working Paper No. 1 Research

Beyond Consensus

Sequential gradient boosting for full-year EPS, and the returns to analyst disagreement

Mathéo Menges · 14 September 2026

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0.723 Model error relative to consensus, across 66,914 firm-year-stage observations, FY2010–2025
0.347 Relative error once three quarters of the fiscal year are reported
1.40 Excess Sharpe ratio of the quarterly long–short book, 2015–2025, net of costs

Abstract

We develop a sequential forecasting model for full-year earnings per share (EPS) that updates as quarterly earnings are reported. It combines an annual forecast, a forecast of the next unreported quarter, and realised earnings using only public information available at each forecast date. We call this sequential updating process a revision cascade. We evaluate the model against the I/B/E/S consensus without using analyst forecasts as model inputs. Across 66,914 firm-year-stage observations, the model’s mean absolute error is 0.723 times that of consensus, improving from 0.934 before any quarter is reported to 0.347 after three quarters. The difference between the model and consensus also predicts subsequent earnings surprises and supports a tradable long–short strategy. The results show that the model provides an independent benchmark for analyst consensus and that the disagreement between the two forecasts contains information about future earnings.

Cite this paper

Menges, M. (2026). Beyond Consensus: Sequential gradient boosting for full-year EPS, and the returns to analyst disagreement. AtlasEQ Working Paper No. 1.

How the Constellation models work

This paper is adapted from research originally developed by Mathéo Menges for the 2026 CFA Quant Awards, an international quantitative-finance research competition organized by participating CFA Societies. It is not a submission to, publication by, or endorsement of CFA Institute or any participating CFA Society. The research used academic data sources that are not incorporated into, connected to, or used as data inputs for the AtlasEQ terminal or its production data infrastructure. It is provided solely for research and informational purposes and does not constitute investment advice. Past research results and historical backtests are not indicative of future performance.