When company directors buy shares, institutional investors increase their stakes or companies buy back their own stock, is that a signal for retail investors to follow? Lance Alexander speaks with Alvin Chow, Co-founder, Dr Wealth, to examine buying activity in three Singapore-listed companies - Centurion Corporation, UMS Integration and Geo Energy Resources. They discuss what these buying signals really mean, whether the three stocks offer value at current prices, and the risks investors should consider before buying. Plus, with DBS, OCBC and UOB facing institutional selling pressure, are investors finding better opportunities elsewhere?