Plantronics is a global leader in audio communications for businesses and consumers. They have pioneered new trends in audio technology for 50 years, creating innovative products that allow people to simply communicate. From unified communication solutions to Bluetooth' headsets, they deliver uncompromising quality, an ideal experience, and extraordinary service. Plantronics is used by every company in the Fortune 100, as well as 911 dispatch, air traffic control and the New York Stock Exchange....
+See MoreSharpe-Lintner-Black CAPM alpha (Premium Members Only) Fama-French (1993) 3-factor alpha (Premium Members Only) Fama-French-Carhart 4-factor alpha (Premium Members Only) Fama-French (2015) 5-factor alpha (Premium Members Only) Fama-French-Carhart 6-factor alpha (Premium Members Only) Dynamic conditional 6-factor alpha (Premium Members Only) Last update: Saturday 7 March 2026
2019-08-02 17:39:00 Friday ET

The Phillips curve becomes the Phillips cloud with no inexorable trade-off between inflation and unemployment. Stanford finance professor John Cochrane disa
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2018-05-29 11:40:00 Tuesday ET

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