Disagreement about the past: An empirical assessment of bank analysts' GAAP and non‐GAAP earnings measures
研究欧洲银行分析师报告发现，非GAAP盈利指标差异大且难以与公司或I/B/E/S数据对账，而GAAP指标差异较小；分析师不仅对未来盈利有分歧，对过去盈利也存在显著分歧。
Abstract Prior research documents that analysts’ non‐Generally Accepted Accounting Principles (non‐GAAP) or “street earnings” exclude transitory items in order to facilitate security valuation. We study sell‐side analysts’ reports for large European banks and find significant variation in analysts’ non‐GAAP actual earnings measures. These measures are not always easily reconcilable to firms’ reported non‐GAAP earnings, to GAAP earnings or to non‐GAAP earnings reported by Institutional Brokers Estimate System (I/B/E/S). By contrast, reported measures of GAAP earnings in analysts’ reports differ from one another (or from firms’ reported GAAP earnings) far less often. When evaluated against analysts’ own actual non‐GAAP earnings measures, forecasts appear more accurate than those based on I/B/E/S actuals. Results for GAAP earnings are less conclusive. Our results indicate that as well as disagreeing about future earnings, analysts also disagree significantly about what earnings were in the past.