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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 30 May 2026

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Addendum on USPTO fintech patent protection and accreditation

Andy Yeh Alpha

2023-01-11 09:26:00 Wednesday ET

Addendum on USPTO fintech patent protection and accreditation

Addendum on USPTO fintech patent protection and accreditation As of early-January 2023, the U.S. Patent and Trademark Office (USPTO) has approved our U.S

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Warren Buffett points out that many people misunderstand his stock investment method in several ways.

Jonah Whanau

2017-06-21 05:36:00 Wednesday ET

Warren Buffett points out that many people misunderstand his stock investment method in several ways.

In his latest Berkshire Hathaway annual letter to shareholders, Warren Buffett points out that many people misunderstand his stock investment method in seve

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Federal Reserve Chair Jerome Powell announces the monetary policy decision to lower the federal funds rate by a quarter point to 2%-2.25%.

Chanel Holden

2019-09-07 17:37:00 Saturday ET

Federal Reserve Chair Jerome Powell announces the monetary policy decision to lower the federal funds rate by a quarter point to 2%-2.25%.

Federal Reserve Chair Jerome Powell announces the monetary policy decision to lower the federal funds rate by a quarter point to 2%-2.25%. This interest rat

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Harvard financial economist Alberto Cavallo empirically shows the recent *Amazon effect* of faster retail price adjustments.

Amy Hamilton

2018-08-23 11:34:00 Thursday ET

Harvard financial economist Alberto Cavallo empirically shows the recent *Amazon effect* of faster retail price adjustments.

Harvard financial economist Alberto Cavallo empirically shows the recent *Amazon effect* that online retailers such as Amazon, Alibaba, and eBay etc use fas

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Jared Diamond delves into how some societies fail, succeed, and revive in global human history.

Becky Berkman

2023-08-28 08:26:00 Monday ET

Jared Diamond delves into how some societies fail, succeed, and revive in global human history.

Jared Diamond delves into how some societies fail, succeed, and revive in global human history. Jared Diamond (2004)   Collapse: how societies

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E.U. antitrust regulators impose a fine on Qualcomm for advancing its exclusive microchip deal with Apple.

Fiona Sydney

2018-01-17 05:30:00 Wednesday ET

E.U. antitrust regulators impose a fine on Qualcomm for advancing its exclusive microchip deal with Apple.

European Union antitrust regulators impose a fine on Qualcomm for advancing its key exclusive microchip deal with Apple to block out rivals such as Intel an

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