Twitter is a public, real-time, global platform where any user can create a Tweet and any user can follow other users. The platform is unique in its simplicity: Tweets are limited to 140 characters of text. This constraint makes it easy for anyone to quickly create, distribute and discover content that is consistent across our platform and optimized for mobile devices. As a result, Tweets drive a high velocity of information exchange that makes Twitter uniquely `live`....
+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 4 July 2026
2019-02-09 08:33:00 Saturday ET

Apple provides positive forward guidance on both revenue and profit forecasts for iPhones, iPads, and MacBooks. In the Christmas 2018 festive season, MacBoo
2018-07-07 10:33:00 Saturday ET

The east-west tech rivalry intensifies between BATs (Baidu, Alibaba, and Tencent) and FAANGs (Facebook, Apple, Amazon, Netflix, and Google). These Sino-U.S.
2026-07-01 11:29:00 Wednesday ET

In recent years, higher American economic growth has been impressive both by historical standards and in comparison to the rest of the world. American excep
2018-06-29 11:41:00 Friday ET

Amazon acquires an Internet pharmacy PillPack in order to better compete with Walgreens Boots Alliance, CVS Health, Rite Aid, and many other drug distributo
2018-09-07 07:33:00 Friday ET

The Economist re-evaluates the realistic scenario that the world has learned few lessons of the global financial crisis from 2008 to 2009 over the past deca
2019-05-11 10:28:00 Saturday ET

The Trump administration still expects to reach a Sino-U.S. trade agreement with a better mechanism for intellectual property protection and enforcement. Pr