Tortoise Acquisition Corp. (NYSE:SHLL)

Real-time price: | Most recent change:0.00%

Tortoise Acquisition Corp. is a blank check company. It aims to acquire one or more businesses and assets, via a merger, capital stock exchange, asset acquisition, stock purchase or reorganization. Tortoise Acquisition Corp. is based in New York, United States....

+See More


Here we provide our AYA proprietary alpha stock signals for all premium members on our AYA fintech network platform. Specifically, a high Fama-French multi-factor dynamic conditional alpha suggests that the stock is likely to consistently outperform the broader stock market benchmarks such as S&P 500, Dow Jones, Nasdaq, Russell 3000, MSCI USA, and MSCI World etc. Since March 2023, our proprietary alpha stock signals retain U.S. Patent and Trademark Office (USPTO) fintech patent protection, approval, and accreditation for 20 years. Our homepage and blog articles provide more details on this proprietary alpha stock market investment model with robust long-term historical backtest evidence.

Sharpe-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

Blog+More

Calomiris and Haber delve into the comparative analysis of bank crises and politics in America, Britain, Canada, Mexico, and Brazil.

Dan Rochefort

2023-04-14 13:32:00 Friday ET

Calomiris and Haber delve into the comparative analysis of bank crises and politics in America, Britain, Canada, Mexico, and Brazil.

Calomiris and Haber delve into the comparative analysis of bank crises and politics in America, Britain, Canada, Mexico, and Brazil. Charles Calomiris an

+See More

Empirical tests of multi-factor models for asset return prediction

Apple Boston

2022-02-25 00:00:00 Friday ET

Empirical tests of multi-factor models for asset return prediction

Empirical tests of multi-factor models for asset return prediction  The capital asset pricing model (CAPM) of Sharpe (1964), Lintner (1965), and Bla

+See More

American CEOs of about 200 corporations issue a joint statement in support of stakeholder value maximization.

Becky Berkman

2019-10-23 15:39:00 Wednesday ET

American CEOs of about 200 corporations issue a joint statement in support of stakeholder value maximization.

American CEOs of about 200 corporations issue a joint statement in support of stakeholder value maximization. The Business Roundtable offers this statement

+See More

Former LSE Director Howard Davies shares his ingenious insights into the new Basel 4 accord.

Chanel Holden

2018-01-01 06:30:00 Monday ET

Former LSE Director Howard Davies shares his ingenious insights into the new Basel 4 accord.

As former chairman of the British Financial Services Authority and former director of the London School of Economics, Howard Davies shares his ingenious ins

+See More

President Trump considers imposing retaliatory economic sanctions on Chinese products.

Peter Prince

2018-01-10 08:40:00 Wednesday ET

President Trump considers imposing retaliatory economic sanctions on Chinese products.

President Trump considers imposing retaliatory economic sanctions on Chinese products and services in direct response to China's theft and infringement

+See More

Trumpism may now become the new populist world order of economic governance.

Monica McNeil

2018-07-30 11:36:00 Monday ET

Trumpism may now become the new populist world order of economic governance.

Trumpism may now become the new populist world order of economic governance. Populist support contributes to Trump's 2016 presidential election victory

+See More