This chapter presents a calendar rebalancing approach to portfolios of stocks in the Indian stock market. Ten important sectors of the Indian economy are first selected. For each of these sectors, the top ten stocks are identified based on their free-float market capitalization values. Using the ten stocks in each sector, a sector-specific portfolio is designed. In this study, the historical stock prices are used from January 4, 2021, to September 20, 2023 (NSE Website). The portfolios are designed based on the training data from January 4, 2021 to June 30, 2022. The performances of the portfolios are tested over the period from July 1, 2022, to September 20, 2023. The calendar rebalancing approach presented in the chapter is based on a yearly rebalancing method. However, the method presented is perfectly flexible and can be adapted for weekly or monthly rebalancing. The rebalanced portfolios for the ten sectors are analyzed in detail for their performances. The performance results are not only indicative of the relative performances of the sectors over the training (i.e., in-sample) data and test (out-of-sample) data, but they also reflect the overall effectiveness of the proposed portfolio rebalancing approach.

翻译：本章提出了一种针对印度股票市场投资组合的日历再平衡方法。首先选取印度经济中的十个重要行业，然后根据自由流通市值识别每个行业中的前十只股票。利用每个行业的十只股票构建行业特定投资组合。本研究使用2021年1月4日至2023年9月20日的历史股价数据（来源：印度国家证券交易所网站），基于2021年1月4日至2022年6月30日的训练数据设计投资组合，并在2022年7月1日至2023年9月20日期间测试其表现。本章提出的日历再平衡方法基于年度再平衡机制，但该方法完全灵活，可适用于周度或月度再平衡。对十个行业的再平衡投资组合进行了详细的业绩分析。业绩结果不仅反映了各行业在训练数据（样本内）和测试数据（样本外）上的相对表现，还揭示了所提投资组合再平衡方法的整体有效性。