A Positive Stock-Bond Correlation Is a Terrible Reason to Add More Equity Risk to Your Portfolio
April 8, 2026
As the correlation between stocks and bonds has turned positive, many investors have questioned whether bonds still provide meaningful diversification and have looked to alternative "replacements." This perspective argues that most popular substitutes add more equity risk, not less, and shows that true diversification still requires strategies with genuinely low or negative equity beta—not simply abandoning bonds.
Alternative Investing
The Less-Efficient Market Hypothesis
September 3, 2024
I argue that over the past 30+ years markets have become less informationally efficient in the relative pricing of common stocks, particularly over medium horizons
The President’s Trophy Curse
May 20, 2024
Continuing my occasional foray into sports analytics, in this post I look at the President's Trophy curse. This ubiquitous observation can be summed up as “the winner of the President’s Trophy, awarded for the best record in the regular season, usually doesn’t go on to win the Stanley Cup. Thus, winning the trophy is cursed.” The President’s Trophy winner usually doesn’t win The Cup. It’s true, and yet it’s still really dumb.
Perspectives
Cognitive Dissonance
April 1, 2024
My latest covers a few things I would’ve thought were hard for investors to believe at the same time. Experience has proven me quite wrong.
Equities
Why Not 100% Equities
February 12, 2024
Recently, a new paper has been making a big splash in our small pond of academic/quant investing. By “new,” I just mean “recently written,” as much of it ain’t new. In this piece, I offer a concise (relative to my norm) rebuttal, as this is well-trod ground.
Perspectives
Opining for the 10th Time
October 9, 2023
I just published my 10th op-ed in The Wall Street Journal. This one is on the movie “Dumb Money” and, more importantly, the broader implications of the meme stock craze for today’s society as a whole. I thought it would be fun to put all ten op-eds out together. Be forewarned – if you aren’t a U. Chicago free marketer, you may not like them all.
Factor/Style Investing
Holding Our Breadth
February 6, 2023
Regular readers probably noticed I’ve been talking a lot about value lately. While I’m all for shining the spotlight onto the value dislocation, my colleagues also continue to produce a great breadth of research worth adding to your non-value-reading-list. I preview some of my recent favorites.
Factor/Style Investing
Uncorrelated Assets: An Important Dimension of an Optimal Portfolio
January 12, 2023
Recently, Dimensional Fund Advisors wrote critically on “liquid alts.” They make some good points, but they also draw some odd conclusions that if applied more generally would not be to their or our liking. Besides discussing their piece, below I also review the general rationale behind holding uncorrelated assets – in particular, equity “factors” held in a long-short manner.
Alternative Investing
Volatility Laundering
January 6, 2023
While not alone, I have become one of the chief gadflies of the private equity industry. But I’m a selective gadfly. The illiquidity and non-marking that comes with private investments used to be acknowledged as a bug. These days, however, this same bug is sold as a feature – and sometimes, as in a recent Institutional Investor op-ed, brazenly so. My response in II covers what I think are the increasingly harmful ramifications of taking as reality the unrealistically smoothed returns that private strategies are all-too-happy to report.
Factor/Style Investing
The Bubble Has Not Popped
January 4, 2023
This post updates our value spread with data through the end of 2022. The fourth quarter of 2022 saw value recover from the bout of temporary insanity that gripped some portion of the market over the summer, but the spread ends 2022 very much still in rarified territory – at the 94th percentile, to be precise. More excitingly for 2023, value’s returns in 2022 were extremely strong, and the spread only moved from roughly the 100th percentile to the 94th, which makes us very optimistic about the prospects of continued normalization in 2023 and beyond.
Value
Is Value Just an Interest Rate Bet?
August 11, 2022
It seems obvious to so many that interest rates drive the value trade. After all, growth stocks have much longer-dated cash flows than value stocks and thus should be a “longer duration” asset and move more with longer-term interest rates, right? This is taken as an axiomatic given in countless pundit and press observations. However, it’s not nearly that simple, and mostly it’s just not true.