Even the greatest investors of all - time have bad quarters, years or even entire market cycles. (awealthofcommonsense.com)
Judged by reasonable measures (risk - adjusted returns measured by the Sharpe ratio) over reasonable periods (entire market cycles rather than arbitrary 1 / 3/5 year snippets), you are better served by portfolios without fillers and by the sorts of managers we characterized as the «we've got your back» guys. (mutualfundobserver.com)
Instead, Tresidder said to view investment results only over the entire market cycle. (gobankingrates.com)