I’ve posted Entry #75 to my weekly Valuation-Informed Indexing column at the Value Walk web site. It’s called Bogle’s Crazy, No-Good, Terrible, Mixed-Up 15 Percent Rule for Tactical Asset Allocation. Juicy Excerpt:  Bogle has never said. He has cited the 15 percent rule on numerous occasions. He has never once explained where it came from. [...]

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