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 7 March 2026

Blog+More

U.S. trading partners such as the European Union, Canada, China, Japan, Mexico, and Russia voice their concern at the WTO.

James Campbell

2018-07-05 13:40:00 Thursday ET

U.S. trading partners such as the European Union, Canada, China, Japan, Mexico, and Russia voice their concern at the WTO.

U.S. trading partners such as the European Union, Canada, China, Japan, Mexico, and Russia voice their concern at the World Trade Organization (WTO) in ligh

+See More

Amazon follows Apple to become the second U.S. public corporation to hit $1 trillion stock market valuation.

Dan Rochefort

2018-09-03 09:31:00 Monday ET

Amazon follows Apple to become the second U.S. public corporation to hit $1 trillion stock market valuation.

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

+See More

President Donald Trump delivers his first state-of-the-union address.

Daphne Basel

2018-01-29 07:38:00 Monday ET

President Donald Trump delivers his first state-of-the-union address.

President Donald Trump delivers his first state-of-the-union address. Several key highlights touch on economic issues from fiscal stimulus and trade protect

+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

The finance ministers of Britain, Canada, France, Germany, Italy, and Japan team up against U.S. President Trump at the G7 forum.

Jonah Whanau

2018-06-02 09:35:00 Saturday ET

The finance ministers of Britain, Canada, France, Germany, Italy, and Japan team up against U.S. President Trump at the G7 forum.

The finance ministers of Britain, Canada, France, Germany, Italy, and Japan team up against U.S. President Donald Trump and Treasury Secretary Steven Mnuchi

+See More

Treasury bond yield curve inversion often signals the next economic recession in America.

Monica McNeil

2018-10-11 08:44:00 Thursday ET

Treasury bond yield curve inversion often signals the next economic recession in America.

Treasury bond yield curve inversion often signals the next economic recession in America. In fact, U.S. bond yield curve inversion correctly predicts the da

+See More