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 10 January 2026

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Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025.

James Campbell

2025-02-02 11:28:00 Sunday ET

Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025.

Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025. Our proprietary alpha investment model outperforms the ma

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America faces income inequality, political polarization, and dysfunctional governance.

Rose Prince

2018-05-17 07:41:00 Thursday ET

America faces income inequality, political polarization, and dysfunctional governance.

Has America become a democratic free land of crumbling infrastructure, galloping income inequality, bitter political polarization, and dysfunctional governa

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President Trump now agrees to cease fire in the trade conflict with the European Union.

Laura Hermes

2018-07-23 07:41:00 Monday ET

President Trump now agrees to cease fire in the trade conflict with the European Union.

President Trump now agrees to cease fire in the trade conflict with the European Union. Both sides can work together towards *zero tariffs, zero non-tariff

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Amazon, Berkshire Hathaway, and JPMorgan Chase establish a new company to reduce U.S. employee health care costs.

Joseph Corr

2018-01-23 06:38:00 Tuesday ET

Amazon, Berkshire Hathaway, and JPMorgan Chase establish a new company to reduce U.S. employee health care costs.

Amazon, Berkshire Hathaway, and JPMorgan Chase establish a new company to reduce U.S. employee health care costs in negotiations with drugmakers, doctors, a

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AT&T wins court approval to take over Time Warner with a trademark $85 billion bid despite the Trump prior dissent due to antitrust concerns.

Chanel Holden

2018-06-07 10:36:00 Thursday ET

AT&T wins court approval to take over Time Warner with a trademark $85 billion bid despite the Trump prior dissent due to antitrust concerns.

AT&T wins court approval to take over Time Warner with a trademark $85 billion bid despite the Trump administration prior dissent due to antitrust conce

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Harley Davidson plans to move its major production for European customers out of America due to European Union tariff retaliation.

Rose Prince

2018-06-21 10:42:00 Thursday ET

Harley Davidson plans to move its major production for European customers out of America due to European Union tariff retaliation.

Harley Davidson plans to move its major production for European customers out of America due to European Union tariff retaliation. European Union retaliator

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