Does supplier concentration matter to investors during the COV1D-19 crisis: evidence from China?

The literature shows that investor attention to customer-supplier disclosure increases when suppliers' information arrival is anticipated. Due to the widespread of city lockdowns in China and the implementation of social distancing to control the COVID-19 pandemic, investor attention to potential disruption of the supply chain spikes, leading to a price devaluation for firms with high supplier concentration risk. We find that a higher degree of supplier concentration is related to more serious stock price declines over the short-term and medium-term windows right after the Wuhan lockdown. This result lends support to the argument that the concentration risk of suppliers is a significant consideration for China stock market investors, especially under the potential financial distress at the firm level induced by the COVID-19 crisis.

The role of ESG performance during times of financial crisis: Evidence from COVID-19 in China.

We examine the role of ESG performance during market-wide financial crisis, triggered in response to the COVID-19 global pandemic. The unique circumstances create an inimitable opportunity to question if investors interpret ESG performance as a signal of future stock performance and/or risk mitigation. Using a novel dataset covering China's CSI300 constituents, we show (i) high-ESG portfolios generally outperform low-ESG portfolios (ii) ESG performance mitigates financial risk during financial crisis and (iii) the role of ESG performance is attenuated in 'normal' times, confirming its incremental importance during crisis. We phrase the results in the context of ESG investment practices.