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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 28 February 2026

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Mark Granovetter follows the key principles of modern economic sociology to analyze social relations and economic phenomena.

Charlene Vos

2023-02-21 08:27:00 Tuesday ET

Mark Granovetter follows the key principles of modern economic sociology to analyze social relations and economic phenomena.

Mark Granovetter follows the key principles of modern economic sociology to analyze social relations and economic phenomena. Mark Granovetter (2017) &

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We can learn much from the frugal habits and lifestyles of several billionaires.

Joseph Corr

2016-10-01 00:00:00 Saturday ET

We can learn much from the frugal habits and lifestyles of several billionaires.

We can learn much from the frugal habits and lifestyles of several billionaires on earth. Warren Buffett, Chairman and CEO of Berkshire Hathaway, still l

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The lean CEO encourages iterative continuous improvements and collaborative teams to innovate around core value streams.

Monica McNeil

2020-07-12 08:30:00 Sunday ET

The lean CEO encourages iterative continuous improvements and collaborative teams to innovate around core value streams.

The lean CEO encourages iterative continuous improvements and collaborative teams to innovate around core value streams. Jacob Stoller (2015)  

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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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U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall.

Amy Hamilton

2019-01-19 12:38:00 Saturday ET

U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall.

U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall that would give President Trump great victory on his

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Tech companies seek to serve as quasi-financial intermediaries.

Amy Hamilton

2019-03-03 10:39:00 Sunday ET

Tech companies seek to serve as quasi-financial intermediaries.

Tech companies seek to serve as quasi-financial intermediaries. Retail traders can list items for sale on eBay and then acquire these items economically on

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