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 21 June 2025

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Fed Chair Jerome Powell hints slower interest rate increases because the current rate is just below the neutral threshold.

Jacob Miramar

2018-12-07 11:35:00 Friday ET

Fed Chair Jerome Powell hints slower interest rate increases because the current rate is just below the neutral threshold.

Fed Chair Jerome Powell hints slower interest rate increases because the current rate is just below the neutral threshold. NYSE and NASDAQ share prices rebo

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Donald Trump defies the odds to become the new U.S. president.

John Fourier

2016-11-08 00:00:00 Tuesday ET

Donald Trump defies the odds to become the new U.S. president.

Donald Trump defies the odds to become the new U.S. president. He wants to make America great again. He seeks to repeal Obamacare. He has zero tole

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Zuckerberg announces his major changes in Facebook's newsfeed algorithm and user authentication.

Becky Berkman

2018-01-07 09:33:00 Sunday ET

Zuckerberg announces his major changes in Facebook's newsfeed algorithm and user authentication.

Zuckerberg announces his major changes in Facebook's newsfeed algorithm and user authentication. Facebook now has to change the newsfeed filter to prior

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Several pharmaceutical companies now switch their primary focus from generic prescription drugs to medical specialties.

Rose Prince

2018-10-15 09:33:00 Monday ET

Several pharmaceutical companies now switch their primary focus from generic prescription drugs to medical specialties.

Several pharmaceutical companies now switch their primary focus from generic prescription drugs to medical specialties such as cardiovascular medications an

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President Trump is open to extending the March 2019 deadline for raising tariffs on Chinese imports.

Peter Prince

2019-02-15 11:33:00 Friday ET

President Trump is open to extending the March 2019 deadline for raising tariffs on Chinese imports.

President Trump is open to extending the March 2019 deadline for raising tariffs on Chinese imports if both sides are close to mutual agreement. These bilat

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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

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