Quantum Portfolio Optimization with Investment Bands and Target Volatility

• URL: http://arxiv.org/abs/2106.06735v4
• Date: Fri, 20 Aug 2021 17:16:48 GMT
• Title: Quantum Portfolio Optimization with Investment Bands and Target Volatility
• Authors: Samuel Palmer, Serkan Sahin, Rodrigo Hernandez, Samuel Mugel, Roman Orus
• Abstract summary: We show how to implement in a simple way some complex real-life constraints on the portfolio optimization problem. We show how to implement individual investment bands, i.e., minimum and maximum possible investments for each asset. Our results show how practical daily constraints found in quantitative finance can be implemented in a simple way in current NISQ quantum processors.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper we show how to implement in a simple way some complex real-life constraints on the portfolio optimization problem, so that it becomes amenable to quantum optimization algorithms. Specifically, first we explain how to obtain the best investment portfolio with a given target risk. This is important in order to produce portfolios with different risk profiles, as typically offered by financial institutions. Second, we show how to implement individual investment bands, i.e., minimum and maximum possible investments for each asset. This is also important in order to impose diversification and avoid corner solutions. Quite remarkably, we show how to build the constrained cost function as a quadratic binary optimization (QUBO) problem, this being the natural input of quantum annealers. The validity of our implementation is proven by finding the optimal portfolios, using D-Wave Hybrid and its Advantage quantum processor, on portfolios built with all the assets from S&P100 and S&P500. Our results show how practical daily constraints found in quantitative finance can be implemented in a simple way in current NISQ quantum processors, with real data, and under realistic market conditions. In combination with clustering algorithms, our methods would allow to replicate the behaviour of more complex indexes, such as Nasdaq Composite or others, in turn being particularly useful to build and replicate Exchange Traded Funds (ETF).

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