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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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We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos.

Becky Berkman

2019-07-19 18:40:00 Friday ET

We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos.

We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos. Amazon is highly customer-centric because the wor

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Peter Schuck analyzes U.S. government failures and structural problems in light of both institutions and incentives.

Dan Rochefort

2023-04-28 16:38:00 Friday ET

Peter Schuck analyzes U.S. government failures and structural problems in light of both institutions and incentives.

Peter Schuck analyzes U.S. government failures and structural problems in light of both institutions and incentives. Peter Schuck (2015)   Why

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The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute.

Laura Hermes

2018-06-09 16:40:00 Saturday ET

The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute.

The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute. The tariffs effectively boost cost

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What is our asset management strategy?

Andy Yeh Alpha

2026-02-28 10:29:00 Saturday ET

What is our asset management strategy?

AYA fintech network platform provides proprietary alpha stock signals and personal finance tools for stock market investors. As of March 2026, we have up

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Eric Posner and Glen Weyl propose radical reforms to resolve key market design problems for better democracy and globalization.

Chanel Holden

2023-02-14 09:31:00 Tuesday ET

Eric Posner and Glen Weyl propose radical reforms to resolve key market design problems for better democracy and globalization.

Eric Posner and Glen Weyl propose radical reforms to resolve key market design problems for better democracy and globalization. Eric Posner and Glen Weyl

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Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects.

Laura Hermes

2023-02-07 08:26:00 Tuesday ET

Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects.

Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects. Michel De Vroey (2016)

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