We show that after the revelation of corporate fraud in a state, household stock market participation in that state decreases. Households decrease holdings in fraudulent as well as non fraudulent firms, even if they do not hold stocks in fraudulent firms. Within a state, households with more lifetime experience of corporate fraud hold less equity. Following the exogenous increase in fraud revelation due to Arthur Andersen's demise, states with more Arthur Andersen clients experience a larger decrease in stock market participation. We provide evidence that the documented effect is likely to reflect a loss of trust in the stock market. This article is protected by copyright. All rights reserved. 1 JEL classification: G30, D12, D14 6 channels through which fraud revelation may affect stock market participation. Section IV provides evidence on the relevance of trust. Section V concludes and discusses implications of the results for corporate finance.