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Paul Kaplan

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  1. Active Returns With Passive Discipline

    This ETF may be an index fund, but its contrarian strategy certainly isn't passive.  

  2. What Does Harry Markowitz Think?

    Sam Savage and Paul Kaplan built a new approach to the pioneering economist's models. Now, they ask for his blessing.

  3. The Correlation Conundrum and What to Do About It

    With the rise in correlations, diversification is more important than ever.

  4. Why Conventional Commodity Indexes Will Likely Disappoint

    A look at the true drivers of commodity futures returns shows that popular indexes like the GSCI are lacking.

  5. MPT Put Through the Wringer

    After another market crash, advisors question whether Modern Portfolio Theory is the best way to tackle asset allocation. We asked two experts to debate its merits.

  6. Modern Portfolio Theory in the Heat of the Meltdown

    To effectively use MPT, investors must recognize its limitations and be willing to challenge it, says Russell Investments director of capital markets research Steven Fox.

  7. Asset Allocation Is King

    Forget about that 90% number. After removing the market movement, asset allocation and active management are equally important in explaining return variations.

  8. Nailing Downside Risk

    A model called the Truncated Lévy Flight builds on Mandelbrot's work to accurately capture the market's fat tails.

  9. Forging a New Commodity Index

    Why a momentum-based long/short approach makes a better benchmark.

  10. Let's Not All Become Fundamental Indexers Just Yet

    The air is coming out of the argument that fundamental indexing is a revolutionary innovation.

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