Información privilegiada y comportamiento del precio y volumen en acciones del IPSA

Abstract

This research examines price and trading-volume patterns in IPSA stocks that may be compatible with the use of insider information in the Santiago Stock Exchange. The objective is to identify statistical patterns in price movements and trading activity that could suggest anticipatory behavior by market participants. Using historical data on prices and trading volumes from January 1, 2015 to March 31, 2025, the study focuses on extreme daily price variations observed between 2022 and 2024. The research adopts an exploratory-descriptive quantitative approach, analyzing abnormal trading volumes preceding significant price changes and contrasting them, when possible, with publicly disclosed material events. The findings identify several episodes in which unusual increases in trading volume occurred prior to extreme price movements. While these patterns do not constitute proof of illegal insider trading, they provide statistical evidence compatible with anticipatory market behavior. The results may contribute to strengthening monitoring mechanisms and improving transparency in the Chilean capital market, while acknowledging the methodological limitations inherent in a descriptive analysis.