There was a great chart in a recent Goldman Sachs Group report that got me wondering whether medium-sized companies might have superpowers.

The chart shows that mid-cap stocks have delivered meaningfully better cumulative returns than the S&P 500 and small-cap stocks over the past three decades. For the mid-caps, that works out to a compound annual growth rate of more than 12 per cent, compared with roughly 11 per cent for the large-caps.

Washington Post