The challenge of performance measurement
Periodic reviews of an investor’s portfolio helps ascertain whether the investment process is working, but more importantly, whether it’s on the right course for the individual investor.
The Beardstown Ladies was a 12-woman investment club that gathered monthly and managed their own stock portfolio. They became celebrities in the mid-1990s when news of their track record went viral: since their 1983 inception, The Beardstown Ladies claimed their portfolio had returned 23.4% versus the S&P 500’s 14.9% return. But in 1998, an audited performance record was released showing the club’s actual returns were actually 9.1% per year.