Kenneth Levy – författare
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A world-renowned scholar of plainchant, Kenneth Levy has spent a portion of his career investigating the nature and ramifications of this repertory''s shift from an oral tradition to the written versions dating to the tenth century. In Gregorian Chant and the Carolingians, which represents the culmination of his research, Levy seeks to change long-held perceptions about certain crucial stages of the evolution and dissemination of the old corpus of plainchant--most notably the assumption that such a large and complex repertory could have become and remained fixed for over a century while still an oral tradition. Levy portrays the promulgation of an authoritative body of plainchant during the reign of Charlemagne by clearly differentiating between actual evidence, hypotheses, and received ideas. How many traditions of oral chant existed before the tenth century? Among the variations noted in written chant, can one point to a single version as being older or more authentic than the others? What precursors might there have been to the notational system used in all the surviving manuscripts, where the notational system seems fully formed and mature? In answering questions that have long vexed many scholars of Gregorian chant''s early history, Levy offers fresh explanations of such topics as the origin of Latin neumes, the shifting relationships between memory and early notations, and the puzzling differences among the first surviving neume-species from the tenth century, which have until now impeded a critical restoration of the Carolingian musical forms.
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The classic guide to quantitative investing—expanded and updated for today’s increasingly complex markets
From Bruce Jacobs and Ken Levy—two pioneers of quantitative equity management— the go-to guide to stock selection has been substantially updated to help you build portfolios in today’s transformed investing landscape.
A powerful combination of in-depth research and expert insights gained from decades of experience, Equity Management, Second Edition includes 24 new peer-reviewed articles that help leveraged long-short investors and leverage-averse investors navigate today’s complex and unpredictable markets.
Retaining all the content that made an instant classic of the first edition—including the authors’ innovative approach to disentangling the many factors that influence stock returns, unifying the investment process, and integrating long and short portfolio positions—this new edition addresses critical issues. Among them--
• What’s the best leverage level for long-short and leveraged long-only portfolios?• Which behavioral characteristics explain the recent financial meltdown and previous crises?• What is smart beta—and why should you think twice about using it? • How do option-pricing theory and arbitrage strategies lead to market instability?• Why are factor-based strategies on the rise?
Equity Management provides the most comprehensive treatment of the subject to date. More than a mere compilation of articles, this collection provides a carefully structured view of modern quantitative investing. You’ll come away with levels of insight and understanding that will give you an edge in increasingly complex and unpredictable markets.
Well-established as two of today’s most innovative thinkers, Jacobs and Levy take you to the next level of investing. Read Equity Management and design the perfect portfolio for your investing goals.