Validating the impact of accounting disclosures on stock market: A deep neural network approach

摘要

Firms disclose information either voluntarily or due to the regulator's mandatory requirements, and such disclosures form good sources to know the prospects of a firm. Information in the disclosures and analysts' opinions influence investor-trading behavior, and consequently, affects the asset prices. As sentiments factored in disclosures are a source of market action, this study aims to capture the sentiments from disclosure information to assess asset prices' impact. The paper adopts a deep neural network-based prediction model for conducting sentiment analysis on heterogeneous datasets. We construct a sentiment simulation model of voluntary disclosures to know whether the managers can use the market sentiment as a strategic input to boost market performance by suitably drafting the tone and content of disclosures without compromising their quality and veracity. The Deep Neural Networks with LSTM algorithm is found to outperform the Deep Neural Networks with RNN and other baseline machine learning classifiers in terms of predictive accuracy of the NSE NIFTY50. The variable importance computed also validates that market news, combined with historical indicators, predicts the stock market trend closer to the actual trend.