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Category Archives: G11

Volatility and Correlation Modeling for Sector Allocation in International Equity Markets

By Melanie Fan

Reliable estimates of volatility and correlation are crucial in asset allocation and risk management. This paper investigates Static, RiskMetrics, and Dynamic Conditional Correlation (DCC) models for estimating volatility and correlation by testing them in an asset allocation context. Optimal allocation weights for one year found using estimates from each model are carried to the subsequent year and the realized Sharpe ratio is computed to assess portfolio performance. We also study cumulative risk-adjusted returns over the entire sample period. Our ndings indicate that DCC does not consistently have an advantage over the other two models, although it is optimal in certain scenarios.

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Advisor: Aino Levonmaa, Emma Rasiel | JEL Codes: C32, C51, G11, G15 | Tagged: Asset Allocation, Dynamic Correlation, Emerging Markets, Volatilita

Do Vanguard ETF Investors Make Good Decisions? – Testing the Bogle Hypothesis

By Meng Xie

John Bogle, the founder of Vanguard, is a notable opponent of frequent ETF trading. We test his
hypothesis that Vanguard investors are not trading ETFs intelligently. A comparison of dollarweighted
and time-weighted returns is the typical method used for assessing investor timing. We
instead employ Sharpe’s style analysis techniques to compare the returns of a portfolio of ETFs
to a basket of standard Vanguard funds that mimics the ETF portfolio’s pattern of returns. We
find that the ETF portfolio underperforms the standard Vanguard funds, providing empirical
evidence supporting Bogle’s view that ETFs are misused.

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Advisor: Edward Tower | JEL Codes: G11 | Tagged: Exchange-traded funds, Investment, Mutual funds, Vanguard

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