On July 29, Waste Management fell 3.1% in after-hours trading, trading at $232.0/share, with turnover of approximately $30.11 million.

The decline was triggered by the company issuing full-year revenue guidance below Wall Street expectations. Waste Management announced it expects fiscal year revenue in the range of $26.275 billion to $26.475 billion, falling short of the FactSet consensus estimate of $26.55 billion. Even the high end of the guidance range trails analyst projections by approximately $75 million, signaling potential headwinds to top-line growth that disappointed investors following the company's latest quarterly earnings release.

Earlier in March, Waste Management had revised its EBIT and EBITDA definitions used in leverage ratio calculations, altering the framework by which investors assess the company's debt capacity. The below-consensus revenue outlook, combined with evolving financial metric definitions, may prompt analysts to reassess their forward estimates for the environmental services giant.

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