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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Anti-competitive corporate practices may stifle U.S. innovation.

Fiona Sydney

2020-01-15 08:31:00 Wednesday ET

Anti-competitive corporate practices may stifle U.S. innovation.

Anti-competitive corporate practices may stifle U.S. innovation. In recent decades, wage growth, economic output, and productivity tend to stagnate as U.S.

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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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IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment.

Charlene Vos

2019-04-29 08:35:00 Monday ET

IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment.

IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment. First, trade tensions remain one of the key

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Global debt surges to $250 trillion in the fiscal year 2019.

Olivia London

2019-12-28 09:36:00 Saturday ET

Global debt surges to $250 trillion in the fiscal year 2019.

Global debt surges to $250 trillion in the fiscal year 2019. The International Institute of Finance analytic report shows that both China and the U.S. accou

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AYA Analytica financial health memo (FHM) blog post and podcast content curation with wise words of wisdom

Daisy Harvey

2019-04-30 07:15:00 Tuesday ET

AYA Analytica financial health memo (FHM) blog post and podcast content curation with wise words of wisdom

Through our AYA fintech network platform, we share numerous insightful posts on personal finance, stock investment, and wealth management. Our AYA finte

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Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation.

Jonah Whanau

2017-12-11 08:42:00 Monday ET

 Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation.

Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation. A stock market quick fire sale would pose minimal risk to t

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