The Cigna Group, together with its subsidiaries, provides insurance and related products and services principally in the United States. The Cigna Group, formerly known as Cigna Corporation, is based in Bloomfield, Connecticut....
+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 19 September 2026
2018-11-27 10:37:00 Tuesday ET

Warren Buffett offloads a few stocks from the Berkshire Hathaway portfolio in mid-November 2018. The latest S.E.C. report shows that the Oracle of Omaha sol
2019-05-19 19:31:00 Sunday ET

MIT professor and co-author Daron Acemoglu suggests that economic prosperity comes from high-wage job creation. Progressive tax redistribution cannot achiev
2025-03-03 04:11:06 Monday ET

Is higher stock market concentration good or bad for Corporate America? In recent years, S&P 500 stock market returns exhibit spectacular concentrati
2019-07-27 17:37:00 Saturday ET

Capital gravitates toward key profitable mutual funds until the marginal asset return equilibrates near the core stock market benchmark. As Stanford finance
2022-05-15 10:29:00 Sunday ET

Innovative investment theory and practice Corporate investment can be in the form of real tangible investment or intangible investment. The former conce
2018-09-03 09:31:00 Monday ET

Amazon follows Apple to become the second American public corporation to hit $1 trillion stock market valuation. Amazon's founder and chairman Jeff Bezo