Financial Performance: Revenues, earnings, and profit margins significantly influence investor confidence. Strong financials typically drive the stock price up.

Industry Trends: The overall health and growth prospects of the waste management industry impact WSTL's valuation. Positive industry outlooks generally benefit the stock.

Economic Conditions: Broader economic factors like GDP growth, inflation, and interest rates affect investor sentiment and investment decisions, thus impacting WSTL's stock price.

Company News: Announcements of new contracts, acquisitions, or significant operational changes can trigger immediate reactions in the stock price. Negative news has an adverse effect.

Regulatory Environment: Changes in environmental regulations and compliance standards can influence WSTL's operating costs and profitability, thereby affecting its stock price.

Market Sentiment: General investor mood and risk appetite affect overall market trends. Positive market sentiment favors price increases, while negative sentiment causes declines.