Who are the world’s best investors?30 Jun 2025 15:49
Article from The Economist June 19th.
The answer is not hedge funds or quant shops or short-sellers.
If finance has a single rule, it is that arbitrage should keep prices in line. If they do stray from fundamentals, so the argument goes, savvy investors should step in to correct them.
All good in theory. In practice, less so. Markets can be swept by sentiment, detaching valuations from fundamentals. Economists have surgically documented persistent distortions. Purely mechanical flows, for instance, move markets even when they are known to investors in advance and unrelated to earnings prospects. When a stock is added to an index, its price inflates. Predictable dividend reinvestments also push up prices. Why does this happen? And who, in time, might correct the market?
Ask on Wall Street for the identity of such arbitrageurs, and you get the usual suspects. Hedge funds and quant shops, armed with analysts and algorithms, are the most natural candidates. The industry has ballooned from overseeing $1.4trn to $4.5trn in assets over the past decade, and is well positioned to spot mispricings. Others suggest short-sellers, ever alert to signs of froth, or retail investors, now keen dip-buyers. One candidate gets mentioned rather less often: staid corporates.
Such businesses are normally seen as passive capital-raisers, not active market participants and certainly not market disciplinarians. Even though they can act on perceived mispricings, firms typically focus more on expanding their own business than on searching for alpha. Bosses have operational backgrounds. They are more fluent in capital spending than capital markets. And when financial officers do wade into the market—to issue or buy back shares, for example—valuation is just one of many considerations, alongside avoiding taxes, ensuring a healthy credit rating and making sure the firm does not take on too much leverage.
And yet a growing body of work suggests that corporations, far from being passive observers, are some of the market’s most effective arbitrageurs. In 2000 Malcolm Baker of Harvard University and Jeffrey Wurgler, then of Yale University, found a tight connection between firms’ net equity issuance and subsequent stockmarket returns. Years in which companies issued relatively more stock were typically followed by weaker market performance. More tellingly, companies seemed to issue precisely when valuations were rich, and especially when other frothy signals, such as buoyant consumer sentiment, were drawing attention.
Timing the market is impressive; out-trading the professionals is even more so. Yet firms that issue or retire their own shares routinely do exactly that. In 2022 David McLean of Georgetown University and co-authors showed that corporate-share sales and buy-backs forecast future returns more accurately than the trades of banks, hedge funds, mutual funds and wealth managers.
What explains this prowess? .............cont'd