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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 21 February 2026

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International trade, immigration, and elite-mass conflict

Jacob Miramar

2023-12-09 08:28:00 Saturday ET

International trade, immigration, and elite-mass conflict

International trade, immigration, and elite-mass conflict The elite model portrays public policy as a reflection of the interests and values of elites. I

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Leon Cooperman points out that the current Trump stock market rally now approaches normalization.

Amy Hamilton

2017-10-27 06:35:00 Friday ET

Leon Cooperman points out that the current Trump stock market rally now approaches normalization.

Leon Cooperman, Chairman and CEO of Omega Advisors, points out that the current Trump stock market rally now approaches normalization. The U.S. stock market

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Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence.

Amy Hamilton

2019-03-11 10:32:00 Monday ET

Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence.

Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence over the rideshare tech unic

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The Trump administration teams up with western allies to bar HuaWei and other Chinese tech firms.

Daisy Harvey

2019-02-02 11:36:00 Saturday ET

The Trump administration teams up with western allies to bar HuaWei and other Chinese tech firms.

The Trump administration teams up with western allies to bar HuaWei and other Chinese tech firms from building the 5G high-speed infrastructure due to natio

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President Trump signs an executive order to freeze federal employee pay in early-2019.

Rose Prince

2019-01-06 08:39:00 Sunday ET

President Trump signs an executive order to freeze federal employee pay in early-2019.

President Trump signs an executive order to freeze federal employee pay in early-2019. Federal employees face furlough or work without pay due to the govern

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Central bank independence remains important for core inflation containment in the current age of political populism.

Jonah Whanau

2019-04-21 10:07:54 Sunday ET

Central bank independence remains important for core inflation containment in the current age of political populism.

Central bank independence remains important for core inflation containment in the current age of political populism. In accordance with the dual mandate of

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