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 4 July 2026

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Federal Reserve delivers a second interest rate hike to 1.75%-2% and then expects more rate increases in late-2018.

Charlene Vos

2018-06-08 13:35:00 Friday ET

Federal Reserve delivers a second interest rate hike to 1.75%-2% and then expects more rate increases in late-2018.

The Federal Reserve delivers a second interest rate hike to 1.75%-2% and then expects subsequent rate increases in September and December 2018 to dampen inf

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Michael Bloomberg criticizes that the Trump administration's tax reform is a trillion dollar blunder.

Fiona Sydney

2017-12-09 08:37:00 Saturday ET

Michael Bloomberg criticizes that the Trump administration's tax reform is a trillion dollar blunder.

Michael Bloomberg, former NYC mayor and media entrepreneur, criticizes that the Trump administration's tax reform is a trillion dollar blunder because i

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Self-Improvement Book Review: The 8th Habit by Stephen Covey.

Monica McNeil

2026-05-02 10:28:00 Saturday ET

Self-Improvement Book Review: The 8th Habit by Stephen Covey.

Stephen Covey recommends the 8th habit for effective team leaders to find their own voices (in addition to the 7 habits of highly effective people). In esse

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The semiconductor microchip demand-supply imbalance remains severe for American big tech.

Amy Hamilton

2022-05-30 09:32:00 Monday ET

The semiconductor microchip demand-supply imbalance remains severe for American big tech.

The new semiconductor microchip demand-supply imbalance remains quite severe for the U.S. tech and auto industries.  Our current fundamental macro a

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President Trump unveils his ambitious $1.5 trillion public infrastructure plan.

Daisy Harvey

2018-02-11 07:30:00 Sunday ET

President Trump unveils his ambitious $1.5 trillion public infrastructure plan.

President Trump unveils his ambitious $1.5 trillion public infrastructure plan. Trump proposes offering $100 billion in federal incentives to encourage stat

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The current homeland industrial policy stance worldwide seeks to embed the new notion of global resilience into economic statecraft.

Daisy Harvey

2025-01-31 09:26:00 Friday ET

The current homeland industrial policy stance worldwide seeks to embed the new notion of global resilience into economic statecraft.

The current homeland industrial policy stance worldwide seeks to embed the new notion of global resilience into economic statecraft. In the broader cont

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