There Ain’t No Such Thing as a Free Lunch
aqr.com · 2025-08-11 · tier T2
Source: Memo · aqr.com dated 2025-08-11. Auto-generated factual summary. Not investment advice. Verify before acting.
Researchers publishing in the Journal of Portfolio Management argue that buffer funds — structured products using options to cap downside while limiting upside — fail to deliver on their core promise of improving risk-adjusted returns. The piece frames these products as selling "comfort, cloaked in complexity" at a measurable cost to investors. The authors contend that buffer funds have one structural feature working in their favor but three working against them, and that both empirical and theoretical analysis undermines the case for owning them. The paper positions simpler, lower-cost alternatives as more effective tools for managing equity market risk. The research builds on two prior posts on the same topic, adding co-authors and expanded analysis. The authors invoke Robert Heinlein's TANSTAAFL — "there ain't no such thing as a free lunch" — as the organizing principle: the downside protection buffer funds advertise comes at a price that erodes the net benefit to investors.
Citations · 5
“we find these products don't hold up to scrutiny, either empirically or theoretically”
p#5 · confidence 97%
“buffer funds (and products like them) can fundamentally be thought of as having one thing going for them and three things against”
p#5 · confidence 95%
“there are simpler, less expensive, and more effective ways to deal with the risk of equity markets”
p#7 · confidence 97%
“Buffer funds by and large have sold investors the promise of comfort, cloaked in complexity, at the cost of risk-adjusted returns”
p#7 · confidence 98%
“Our latest piece on Buffer Funds appears in the current issue of the Journal of Portfolio Management. Once again, and with more analysis (and co-authors) than our two previous posts”
p#5 · confidence 96%
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Cliff Asness
AQR Perspectives · quant value and factor investing
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Investor clarifies he did not predict private equity's recent troubles, only flagged long-term structural concerns about fees and alpha sustainability.
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PublishedMar 25, 2026
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