That paper demonstrates a purely mechanical annual rebalancing of stocks meeting Graham's net current asset
value criterion generated a mean return between 1970 and 1983 of «29.4 % per year versus 11.5 % per year for the NYSE - AMEX Index.»
They can (also) be compensated for other means of contributing
value to the firm, including clients landed, business
generated, relationships maintained, solutions identified, teams managed, projects led, efficiencies found, juniors mentored, and a host of other
criteria.