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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 March 2026

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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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Internal capital markets and financial constraints

Charlene Vos

2022-10-15 09:34:00 Saturday ET

Internal capital markets and financial constraints

Internal capital markets and financial constraints Duchin (JF 2010) empirically finds that multidivisional firms with robust internal capital markets ret

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Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazon.

Olivia London

2019-07-23 09:22:00 Tuesday ET

Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazon.

Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazo

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Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence.

Amy Hamilton

2019-03-11 10:32:00 Monday ET

Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence.

Lyft seeks to go public with a dual-class stock ownership structure that allows the co-founders to retain significant influence over the rideshare tech unic

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Fundamental value investors find it more difficult to ferret out individual stocks.

James Campbell

2017-06-03 05:35:00 Saturday ET

Fundamental value investors find it more difficult to ferret out individual stocks.

Fundamental value investors, who intend to manage their stock portfolios like Warren Buffett and Peter Lynch, now find it more difficult to ferret out indiv

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A brief biography of Andy Yeh

Andy Yeh Alpha

2020-11-22 11:30:00 Sunday ET

A brief biography of Andy Yeh

A brief biography of Andy Yeh Andy Yeh is responsible for ensuring maximum sustainable member growth within the Andy Yeh Alpha (AYA) fintech network pla

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