Title
Constructing Equity Investment Strategies Using Analyst Reports and Regime Switching Models.
Abstract
This study demonstrates whether analysts' sentiments toward individual stocks are useful for stock investment strategies. This is achieved by using natural language processing to create a polarity index from textual information in analyst reports. In this study, we performed time series forecasting for the created polarity index using deep learning, and clustered the forecasted values by volatility using a regime switching model. In addition, we constructed a portfolio from stock data and rebalanced it at each change point of the regime. Consequently, the investment strategy proposed in this study outperforms the benchmark portfolio in terms of returns. This suggests that the polarity index is useful for constructing stock investment strategies.
Year
DOI
Venue
2022
10.3389/frai.2022.865950
Frontiers in Artificial Intelligence
Keywords
DocType
Volume
BERT,Hidden Markov Model,financial market,regime switching model,trading strategy
Journal
5
ISSN
Citations 
PageRank 
2624-8212
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Rei Taguchi100.34
Hikaru Watanabe200.34
Hiroki Sakaji300.34
Kiyoshi Izumi400.34
Kenji Hiramatsu500.34