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 29 November 2025

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British Prime Minister Theresa May faces her landslide defeat in the parliamentary vote 432-to-202 against her Brexit deal.

Charlene Vos

2019-01-27 12:39:00 Sunday ET

British Prime Minister Theresa May faces her landslide defeat in the parliamentary vote 432-to-202 against her Brexit deal.

British Prime Minister Theresa May faces her landslide defeat in the parliamentary vote 432-to-202 against her Brexit deal. British Parliament rejects the M

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In the current global market for better biotech advances, medical innovations, and healthcare services, the new integration of artificial intelligence (AI) reshapes the competitive landscape worldwide.

Charlene Vos

2026-04-30 08:28:00 Thursday ET

In the current global market for better biotech advances, medical innovations, and healthcare services, the new integration of artificial intelligence (AI) reshapes the competitive landscape worldwide.

In the current global market for better biotech advances, medical innovations, and healthcare services, the new integration of artificial intelligence (AI)

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We share Warren Buffett's famous quotes on fundamental stock investment.

Charlene Vos

2017-07-19 11:35:00 Wednesday ET

We share Warren Buffett's famous quotes on fundamental stock investment.

This brief article encapsulates the timeless wisdom of Warren Buffett's famous quotes on fundamental stock investment, fear and greed, patience, risk co

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Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most corporations.

Daisy Harvey

2023-07-28 11:28:00 Friday ET

Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most corporations.

Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most U.S. public corpor

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Former New York Times team journalist and Pulitzer Prize winner Charles Duhigg delves into how we can change our lives for the better by mastering our habits from day to day.

Monica McNeil

2025-06-05 00:00:00 Thursday ET

Former New York Times team journalist and Pulitzer Prize winner Charles Duhigg delves into how we can change our lives for the better by mastering our habits from day to day.

Former New York Times team journalist and Pulitzer Prize winner Charles Duhigg describes, discusses, and delves into how we can change our respective lives

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European Commission President Ursula von der Leyen now protects the European circular economy and green growth from 2020 to 2050.

Dan Rochefort

2019-12-22 08:30:00 Sunday ET

European Commission President Ursula von der Leyen now protects the European circular economy and green growth from 2020 to 2050.

European Commission President Ursula von der Leyen now protects the European circular economy and green growth from 2020 to 2050. The new circular economy r

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