Jack Bogle is best known as the founder of Vanguard index funds, but he also dispenses great common sense advice about investing. I’ve written previously about his long-term stock return methodology including this prediction for stock returns for 2010-2020.
He also has a simple method to predicting future long-term bond returns, which is by simply taking the current bond yield. For example, the current yield of 10-year Treasuries is 2.7%, so roughly 3% is likely the future 10-year return.
This is explained further in this recent WSJ article (via Abnormal Returns). This chart shows it best:

Since 1926, he notes, the entry yield on the 10-year Treasury explains 92% of the annualized return an investor would have earned over the subsequent decade had he or she held the bond to maturity and reinvested the coupon payments at prevailing rates.
Similarly, the entry yield on the Barclays U.S. Aggregate Bond index (of investment-grade U.S. bonds) explains 90% of its 10-year returns for the years 1976 to 2012, says Tony Crescenzi, a portfolio manager and strategist at Pacific Investment Management Co.
The Vanguard Total Bond Market ETF (BND) which tracks the Barclays U.S. Aggregate Bond index currently has an SEC yield of 2.2%, which doesn’t seem like a very exciting number to look forward to. While this shows that our expectations should be very modest, it’s still important to remember that we hold bonds as a counterbalance to stock price volatility. As long as we hold them together, the overall picture is much more tolerable.
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I never file my tax returns too early. The last time I did so, I had to file an extra amended return as my stock brokerage sent me a late corrected 1099 form shortly afterward. What a hassle. It seems that every year one of these forms shows up in my mailbox in March. Indeed,
Online portfolio managers are a hot area right now, and
After posting the 1-year update (


Updated. In my post 
Carol Loomis of Fortune has just posted the 6-year update in Fortune of the $1,000,000 index fund vs. hedge fund bet between Warren Buffett and a successful hedge fund manager. The hedge funds were in the lead early on, but started lagging behind last year. Over 2013, the index fund lead widened further. 60% of the way through the 10-year bet (1/1/08 to 12/31/17), the Vanguard S&P 500 index fund backed by Buffett is up by 43.8%. The group of hedge funds hand-picked by Protégé Partners are up by 12.5%, a gap of over 30%.
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