Key Findings

Five critical insights from the research, connecting evidence across all analyses

High HIP firms outperformed in early years (2016-2020) but underperform in recent years (2022-2026).

Supporting Evidence

2016-2020 average High HIP return: +18.5%. 2022-2026 average: +4.6%. The crossover occurred in 2021-2022.

Model 3 (R²=0.056) shows management variables explain more variance than aggregate HIP score.

Supporting Evidence

Model 3 R² = 0.056 vs Model 1 R² = 0.045. ManagementPractices β = 0.652 (p < 0.001).

Wealth pillar shows significant negative coefficient, suggesting overvaluation.

Supporting Evidence

Wealth pillar coefficient: β = -0.275 (p < 0.001). Only pillar with significant negative impact.

Lagged analysis reveals positive 1-year but negative 3-4 year predictive power.

Supporting Evidence

1-year lag β = +0.112 (p = 0.003). 4-year lag β = -0.134 (p = 0.002).

Long High HIP / Short Low HIP returns -14.20%, challenging ESG alpha hypothesis.

Supporting Evidence

Cumulative long-short return: -14.20%. Strategy lost money in 7 of 11 years.

Connecting the Dots

Annual Returns

confirm

Event Study

reveal timing

Lagged Analysis

identify driver

Regression

conclude

Strategy Failure

For Investors

Don't rely solely on ESG scores for alpha generation.
Focus on management quality as the strongest predictor of post-acquisition success.
Consider time horizons: ESG signals reverse after 2 years, so strategies need frequent rebalancing.

For Corporate Managers

Improving management practices yields better post-acquisition outcomes than improving ESG ratings.
Focus on operational execution rather than ESG label optimization.
The market ultimately rewards substance over signaling.

For Researchers

ESG premiums may be time-varying rather than permanent.
Future studies should account for structural breaks and mean reversion in ESG factors.
Lagged specifications reveal important signal decay dynamics missed by contemporaneous models.