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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 23 May 2026

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We need crowdfunds to support our next responsive web design and iOS and Android app development.

Andy Yeh Alpha

2019-01-13 12:37:00 Sunday ET

We need crowdfunds to support our next responsive web design and iOS and Android app development.

We need crowdfunds to support our next responsive web design and iOS and Android app development. Upon successful campaign completion, we will provide an eb

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Central banks learn to weigh the monetary policy trade-offs between output and inflation expectations and macro-financial stress conditions.

Becky Berkman

2026-01-31 10:31:00 Saturday ET

Central banks learn to weigh the monetary policy trade-offs between output and inflation expectations and macro-financial stress conditions.

  In recent years, several central banks conduct, assess, and discuss the core lessons, rules, and challenges from their monetary policy framework r

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Michael Woodford provides the theoretical foundations of monetary policy rules in ever more efficient financial markets.

Fiona Sydney

2023-09-07 11:30:00 Thursday ET

Michael Woodford provides the theoretical foundations of monetary policy rules in ever more efficient financial markets.

Michael Woodford provides the theoretical foundations of monetary policy rules in ever more efficient financial markets. Michael Woodford (2003)  

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President Trump remains optimistic about the Sino-American trade war resolution.

Monica McNeil

2019-02-05 10:32:00 Tuesday ET

President Trump remains optimistic about the Sino-American trade war resolution.

President Trump remains optimistic about the Sino-American trade war resolution of both trade deficit eradication and tech transfer enforcement. Trump now s

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Agile lean enterprises strive to design radical business models to remain competitive in the face of nimble startups and megatrends.

Joseph Corr

2020-10-13 08:27:00 Tuesday ET

Agile lean enterprises strive to design radical business models to remain competitive in the face of nimble startups and megatrends.

Agile lean enterprises strive to design radical business models to remain competitive in the face of nimble startups and megatrends. Carsten Linz, Gunter

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Facebook faces a major data breach by Cambridge Analytica that has harvested information from 50 million Facebook users.

Amy Hamilton

2018-03-17 09:35:00 Saturday ET

Facebook faces a major data breach by Cambridge Analytica that has harvested information from 50 million Facebook users.

Facebook faces a major data breach by Cambridge Analytica that has harvested private information from more than 50 million Facebook users. In a Facebook pos

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