◈ DISCLOSURE · AI-assisted editorial summary. As an Amazon Associate, ClearValue Books earns from qualifying purchases.

◈ BOOK REVIEW · INVESTING

2016 Stocks, Bonds, Bills, and Inflation (SBBI) Yearbook

Name: 2016 Stocks, Bonds, Bills, and Inflation (SBBI) Yearbook
Author: Roger Ibbotson

by Roger Ibbotson

Who this is for

For institutional investors, financial advisors, portfolio analysts, and CFA candidates who need authoritative long-run US asset class return data — not appropriate as retail investment reading.

Buy on Amazon →🎧 Listen on Audible →

Curated by Brian Kim, CPA — every pick gets a plain-English summary and the key takeaways.

Brian Kim, CPA · 2.89M YouTube Subscribers →

◈ KEY TAKEAWAYS

What this book actually teaches

01The SBBI Yearbook is the definitive long-run US asset class return database, covering 1926 to the current edition year across equities, bonds, bills, and inflation.
02The equity risk premium data in this yearbook underlies capital market assumptions at pension funds and endowments globally — it is a practitioner reference, not a retail investment guide.
03The yearbook provides both geometric and arithmetic mean returns and standard deviations, the full toolkit for Monte Carlo modeling and asset allocation optimization.
04The 1926 start date is a known limitation — international and pre-1926 US data suggest somewhat different equity risk premium estimates, and forward-looking assumptions shouldn't anchor too tightly to historical averages.
05Much of the core data is now available through academic sources; the yearbook's value is the cleaned, organized, continuously updated format.

◈ THE SUMMARY

What's in this book

Scored against ClearValue's published methodology · Jun 28, 2026

The Stocks, Bonds, Bills, and Inflation (SBBI) Yearbook is the gold standard reference for long-run US asset class return data. First published by Roger Ibbotson and Rex Sinquefield in 1976, the annual yearbook compiles total return series going back to 1926 for major asset categories: large-cap equities, small-cap equities, long-term government bonds, intermediate-term government bonds, Treasury bills, and inflation. The 2016 edition, attributed to Roger Ibbotson's team at Morningstar (which acquired the data series), extends the historical record through year-end 2015 and remains the standard citation for practitioners building capital market assumptions.

The book's core function is empirical rather than argumentative. It answers a specific set of questions: what have different asset classes actually returned over long periods, how variable have those returns been, and how have the returns of different asset classes correlated with each other and with inflation? The data shows that over the full 1926–2015 period, large-cap US stocks returned approximately 10% annually, with substantial year-to-year volatility; long-term government bonds returned roughly 5–6% with significantly lower volatility; and Treasury bills barely kept pace with inflation. The equity risk premium — the excess return investors have historically received for bearing equity volatility — is one of the most-cited statistics from the yearbook, and the data underlying it drives portfolio construction decisions at pension funds, endowments, and wealth management firms globally.

The yearbook also provides geometric and arithmetic mean returns, standard deviations, and rolling-period return distributions — the full statistical toolkit required for Monte Carlo modeling, asset allocation optimization, and liability-matching work. The inflation-adjusted (real) return series are particularly important for retirement planning, where the question isn't nominal return but purchasing-power preservation.

For institutional investors, financial advisors, and CFAs building capital market assumptions, conducting asset allocation analysis, or teaching finance at the graduate level.

Weaknesses

the SBBI Yearbook is a data reference, not a book of ideas. It doesn't interpret the data, doesn't tell readers what to do with it, and doesn't engage with the ongoing academic debate about whether historical equity risk premiums are the right input for forward-looking capital market assumptions. The 1926 start date is also a limitation that critics have noted: extending the data back through the 19th century or examining international markets suggests somewhat different equity risk premium estimates. And the yearbook is expensive relative to the publicly available alternatives — much of the core data is now accessible through academic datasets, CRSP, or the Federal Reserve's data portal. Practitioners who need the full historical series in cleaned, organized form will find it worth the price; casual investors won't.

Verdict

an essential reference for practitioners who build or audit capital market assumptions, and required reading for anyone who wants to understand where the equity risk premium estimates in finance textbooks come from — not useful as casual reading or as a source of investment ideas.

Summary as of June 28, 2026AI-assisted summary.