Market Signals and Mutual Funds: A Study of Strategic Choices Under Uncertainty

Investment decisions in financial markets are fundamentally guided by rational choice frameworks, where both individual investors and institutional fund managers act under the influence of market signals, risk perception and expected utility. Mutual funds, as a prominent investment vehicle for retail and institutional investors, serve as intermediaries between consumer choice and producer (fund managers) strategy. In an era marked by heightened market volatility and information asymmetry, investment decisions are increasingly shaped by rational expectations and behavioural responses to market signals. This study investigates the co-movement dynamics between mutual fund returns and their corresponding underlying indices of the National Stock Exchange (NSE) of India, emphasizing how such relationships influence the rational choices of both individual investors (consumers) and fund managers (producers of investment portfolios). Utilizing advanced time-series econometric techniques, including the cointegration test, vector error correction model (VECM) and Granger causality analysis, the study evaluates whether mutual funds align with the indexes of NSE in a manner that reflects market efficiency and rational fund allocation. The findings reveal significant short-run and long-run dependencies, suggesting that fund managers’ strategic decisions are closely tethered to index movements, which in turn affect investor confidence and choice under uncertainty. This research contributes to the broader discourse on decision-making under risk by highlighting how the perceived stability and predictability of benchmark indices guide mutual fund flows. It also raises critical questions about whether such co-movements indicate informed investment choice or passive index mimicry, thereby offering new insights into consumer investment behaviour in India’s mutual fund ecosystem. The study underscores the implications for rational asset allocation, portfolio diversification and the role of informational efficiency in financial decision-making. JEL Classifications: D72, D74, H1, H4, H7