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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President Trump approves a phase one trade agreement with China.

Joseph Corr

2020-01-01 13:39:00 Wednesday ET

President Trump approves a phase one trade agreement with China.

President Trump approves a phase one trade agreement with China. This approval averts the introduction of new tariffs on Chinese imports. In return, China s

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Is Bitcoin a legitimate (crypto)currency or a new bubble waiting to implode?

Monica McNeil

2017-11-24 08:41:00 Friday ET

Is Bitcoin a legitimate (crypto)currency or a new bubble waiting to implode?

Is Bitcoin a legitimate (crypto)currency or a new bubble waiting to implode? As its prices skyrocket, bankers, pundits, and investors increasingly take side

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China allows its renminbi currency to slide below the psychologically important threshold of 7-yuan per U.S. dollar.

Charlene Vos

2019-09-13 10:37:00 Friday ET

China allows its renminbi currency to slide below the psychologically important threshold of 7-yuan per U.S. dollar.

China allows its renminbi currency to slide below the key psychologically important threshold of 7-yuan per U.S. dollar. A currency dispute between the U.S.

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Snap cannot keep up with the Kardashians because its stock loses $1 billion market value after Kylie Jenner tweets about her decision to leave Snapchat.

Monica McNeil

2018-02-19 08:39:00 Monday ET

Snap cannot keep up with the Kardashians because its stock loses $1 billion market value after Kylie Jenner tweets about her decision to leave Snapchat.

Snap cannot keep up with the Kardashians because its stock loses market value 7% or $1 billion after Kylie Jenner tweets about her decision to leave Snapcha

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Is higher stock market concentration good or bad for Corporate America?

Laura Hermes

2025-03-03 04:11:06 Monday ET

Is higher stock market concentration good or bad for Corporate America?

Is higher stock market concentration good or bad for Corporate America? In recent years, S&P 500 stock market returns exhibit spectacular concentrati

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Daniel Goleman explains why emotional intelligence is more important than high IQ for our success, virtue, and happiness in life.

Olivia London

2025-06-21 10:25:00 Saturday ET

Daniel Goleman explains why emotional intelligence is more important than high IQ for our success, virtue, and happiness in life.

Former New York Times science author and Harvard psychologist Daniel Goleman explains why emotional intelligence can serve as a more important critical succ

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