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Nuveen S&P 500 Dynamic Overwrite Fund is a diversified closed-end management investment company. Its investment objective is to seek attractive total returns with less volatility than the S&P 500 Index by investing in a U.S. equity portfolio that seeks to substantially replicate the price movements of the S&P 500 Index, as well as selling call options on 35%-75% of the notional value of the Fund's equity portfolio (with a 55% long-term target) in an effort to enhance the Fund's risk-adjusted returns.
Codexis Inc is involved in the business of providing enzyme optimization services, commercialization of proteins, and developing biocatalyst products, leveraging its proprietary CodeEvolver directed evolution technology platform. The firm's products and services include Biocatalysts and Enzymes. The company generates majority of its revenue through product sales and also licenses its technology platform CodeEvolver to pharmaceutical companies enabling them to use this technology, in-house, to engineer enzymes for their own businesses. Geographically, it derives revenue from the United States, Ireland, Switzerland, China and other markets.