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....

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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 13 June 2026

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Chicago finance professor Raghuram Rajan suggests that free markets need populist support against an unholy alliance of private-sector and state elites.

John Fourier

2019-05-21 12:37:00 Tuesday ET

Chicago finance professor Raghuram Rajan suggests that free markets need populist support against an unholy alliance of private-sector and state elites.

Chicago finance professor Raghuram Rajan shows that free markets need populist support against an unholy alliance of private-sector and state elites. When a

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To secure better E.U. economic arrangements, Jeremy Corbyn encourages Labour legislators to back a second referendum on Brexit.

Olivia London

2019-06-17 11:25:00 Monday ET

To secure better E.U. economic arrangements, Jeremy Corbyn encourages Labour legislators to back a second referendum on Brexit.

To secure better economic arrangements with European Union, Jeremy Corbyn encourages Labour legislators to back a second referendum on Brexit. In recent tim

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The new Fed chairman Jerome Powell faces a new challenge in the form of core CPI rate hikes toward 1.8%-2.1%.

Laura Hermes

2018-02-07 06:38:00 Wednesday ET

The new Fed chairman Jerome Powell faces a new challenge in the form of core CPI rate hikes toward 1.8%-2.1%.

The new Fed chairman Jerome Powell faces a new challenge in the form of both core CPI and CPI inflation rate hikes toward 1.8%-2.1% year-over-year with stro

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Hong Kong billionaire Li Ka-Shing announces his retirement in March 2018 with an incredible rags-to-riches life story.

John Fourier

2018-03-11 08:27:00 Sunday ET

Hong Kong billionaire Li Ka-Shing announces his retirement in March 2018 with an incredible rags-to-riches life story.

At 89 years old, Hong Kong billionaire Li Ka-Shing announces his retirement in March 2018. With a personal net worth of $35 billion, Li has an incredible ra

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European Central Bank designs its current monetary policy reaction function and interest rate forward guidance in response to low inflation.

Peter Prince

2019-04-11 07:35:00 Thursday ET

European Central Bank designs its current monetary policy reaction function and interest rate forward guidance in response to low inflation.

European Central Bank designs its current monetary policy reaction function and interest rate forward guidance in response to key delays in inflation conver

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U.S. yield curve inversion can be a sign but not a root cause of the next economic recession.

Dan Rochefort

2019-09-19 15:30:00 Thursday ET

U.S. yield curve inversion can be a sign but not a root cause of the next economic recession.

U.S. yield curve inversion can be a sign but not a root cause of the next economic recession. Treasury yield curve inversion helps predict each of the U.S.

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