• Smart Beta ETFs vs. Index Funds: The Hidden Fee Drag

    I wanted to see what was really going on with these Smart Beta ETFs, so I dug into the numbers and found that, when you break it down, they’re mostly just taking well-known investing ideas from textbooks, giving them a new label, and then charging extra for what is basically a simple tweak to a…

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  • Index Funds vs. Value Investing: The Mathematical Flaw of Cap-Weighting

    When you build a portfolio using fundamental weighting, what you are really doing is making sure your investments are based on the actual size and role of each company in the real economy, instead of just following whatever stocks happen to be popular at the moment. This approach naturally helps you avoid the kind of…

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  • The Passive Investing Trap: Surviving Peak Market Concentration

    I’ve been thinking about how the Herfindahl-Hirschman Index, which basically measures how much a few big players dominate the market, can actually help us spot those moments when things have gotten so lopsided that a reversal is almost bound to happen, just because markets have a way of drifting back toward balance over time.

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  • The passive paradox: how index growth destroys underlying liquidity

    I’ve been looking at how passive investing has changed the way smaller companies in the S&P 500 trade, and it seems like it’s making it harder for people to buy and sell these stocks easily or figure out what they’re really worth, especially when you look at how the gap between what buyers want to…

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  • The self-fulfilling prophecy of liquidity

    When money flows into passive funds, it tends to get funneled into the biggest companies just because they are already big, which means their stock prices can keep rising for reasons that have little to do with how well those companies are actually performing, and over time, this can make prices drift away from what…

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  • The shadow tax hidden inside extreme valuation IPOs

    When Nasdaq quickly adds huge new companies like SpaceX to its indexes, even though only a small number of shares are actually available to trade, it sets up a situation where index funds have to buy at whatever price they can get, which almost always means paying more than they should. If you look at…

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AI Software Engineer at Google | PhD in AI & Engineering | Writing about AI, Engineering, Investing, and Personal Finance.

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