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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 15 August 2026

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State, society, and the narrow corridor to liberty

Joseph Corr

2023-09-28 08:26:00 Thursday ET

State, society, and the narrow corridor to liberty

Daron Acemoglu and James Robinson show a constant economic tussle between society and the state in the hot pursuit of liberty. Daron Acemoglu and James R

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Amazon follows Apple to become the second U.S. public corporation to hit $1 trillion stock market valuation.

Dan Rochefort

2018-09-03 09:31:00 Monday ET

Amazon follows Apple to become the second U.S. public corporation to hit $1 trillion stock market valuation.

Amazon follows Apple to become the second American public corporation to hit $1 trillion stock market valuation. Amazon's founder and chairman Jeff Bezo

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Central banks in India, Thailand, and New Zealand lower their interest rates in response to the Federal Reserve rate cut.

Daisy Harvey

2019-09-11 09:31:00 Wednesday ET

Central banks in India, Thailand, and New Zealand lower their interest rates in response to the Federal Reserve rate cut.

Central banks in India, Thailand, and New Zealand lower their interest rates in a defensive response to the Federal Reserve recent rate cut. The central ban

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Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science.

James Campbell

2023-09-14 09:28:00 Thursday ET

Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science.

Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science. Colin Camerer, George Loewenstei

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The Trump administration expects to reach an interim partial trade deal with China.

Jacob Miramar

2019-11-05 07:41:00 Tuesday ET

The Trump administration expects to reach an interim partial trade deal with China.

The Trump administration expects to reach an interim partial trade deal with China. This interim partial trade deal represents the first phase of a comprehe

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Global climate change can cause an adverse impact on long-term real GDP economic growth.

Dan Rochefort

2019-10-27 17:37:00 Sunday ET

Global climate change can cause an adverse impact on long-term real GDP economic growth.

International climate change can cause an adverse impact on long-term real GDP economic growth. USC climate change economist Hashem Pesaran and his co-autho

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