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Decline

31-01-2025 · Data sets

Data sets – Volatility-sorted portfolios

This dataset file contains two volatility-sorted datasets going back to 1929 (last update: January 2025).

    Authors

  • Pim van Vliet - Head of Conservative Equities and Chief Quant Strategist

    Pim van Vliet

    Head of Conservative Equities and Chief Quant Strategist

  • Jan de Koning - Head of Quant Client Portfolio Management

    Jan de Koning

    Head of Quant Client Portfolio Management

  1. Volatility-sorted decile portfolios and the Conservative vs Speculative portfolios. The portfolios are equally weighted and based on the largest 1,000 US stocks. The conservative formula selects within the 500 lowest volatility stocks, the 100 stocks with highest net payout ratio and positive price momentum. The Conservative Formula is presented in the book 'High Returns from Low Risk: A Remarkable Stock Market Paradox’ and rigorously tested in the article ‘The Conservative Formula: Quantitative Investing made easy’.

  2. Double sorted volatility portfolios and a long-short VOL hedge factor. The VOL factor is value-weighted and based on all US stocks, similar to the Fama-French 2x3 double-sorted portfolios. The portfolio is based on the intersections of two portfolios formed on market equity and three portfolios formed on the past 36-month return volatility. The market equity breakpoint is the median NYSE market equity, and the volatility breakpoints are the 30th and the 70th NYSE percentiles.

Robeco believes that investors can profit from the low-risk effect. For clients all over the world we manage over USD 10 bln in Conservative Equities strategies since 2006. An influential study by Van Vliet and David Blitz published in the Journal of Portfolio Management in 2007 presented international evidence to show that stocks with low volatility earn high risk-adjusted returns. The low-volatility effect is perhaps the largest anomaly in finance, challenging the basic trade-off between risk and return. Yet it remains one of the least utilized factor premiums in financial markets. With this dataset we give you the opportunity to investigate this fascinating investment concept further.

Download the data


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In all cases where historical performance is presented, please note that past performance is not a reliable indicator of future results and should not be relied upon as the basis for making an investment decision. Investors may not get back the amount originally invested. Neither Robeco Institutional Asset Management B.V. nor any of its affiliates guarantees the performance or the future returns of any investments. If the currency in which the past performance is displayed differs from the currency of the country in which you reside, then you should be aware that due to exchange rate fluctuations the performance shown may increase or decrease if converted into your local currency. Robeco Institutional Asset Management B.V. (“Robeco”) expressly prohibits any redistribution of the Information without the prior written consent of Robeco. The Information is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where such distribution or use is contrary to law, rule or regulation. Certain information contained in the Information includes calculations or figures that have been prepared internally and have not been audited or verified by a third party. Use of different methods for preparing, calculating or presenting information may lead to different results. Robeco Institutional Asset Management UK Limited (“RIAM UK”) is authorised and regulated by the Financial Conduct Authority. RIAM UK, 30 Fenchurch Street, Part Level 8, London EC3M 3BD (FCA Reference No:1007814). The company is registered in England and Wales under Ref No. 15362605.

In all cases where historical performance is presented, please note that past performance is not a reliable indicator of future results and should not be relied upon as the basis for making an investment decision. Investors may not get back the amount originally invested. Neither Robeco Institutional Asset Management B.V. nor any of its affiliates guarantees the performance or the future returns of any investments. If the currency in which the past performance is displayed differs from the currency of the country in which you reside, then you should be aware that due to exchange rate fluctuations the performance shown may increase or decrease if converted into your local currency. Robeco Institutional Asset Management B.V. (“Robeco”) expressly prohibits any redistribution of the Information without the prior written consent of Robeco. The Information is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where such distribution or use is contrary to law, rule or regulation. Certain information contained in the Information includes calculations or figures that have been prepared internally and have not been audited or verified by a third party. Use of different methods for preparing, calculating or presenting information may lead to different results. Robeco Institutional Asset Management B.V. is authorised as a manager of UCITS and AIFs by the Netherlands Authority for the Financial Markets and subject to limited regulation in the UK by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request.