Tortoise Acquisition Corp. (NYSE:SHLL)

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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 23 May 2026

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Fundamental factors often reflect macroeconomic innovations and so help inform better stock investment decisions.

Jacob Miramar

2019-08-22 11:35:00 Thursday ET

Fundamental factors often reflect macroeconomic innovations and so help inform better stock investment decisions.

Fundamental factors often reflect macroeconomic innovations and so help inform better stock investment decisions. Nobel Laureate Eugene Fama and his long-ti

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The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war.

Dan Rochefort

2019-06-13 10:26:00 Thursday ET

The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war.

The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war. In recent

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The world now faces an economic inequality crisis with few policy options.

Daisy Harvey

2018-01-04 07:36:00 Thursday ET

The world now faces an economic inequality crisis with few policy options.

The world now faces an economic inequality crisis with few policy options. Some recent U.S. Federal Reserve data suggest that both income and wealth inequal

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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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PwC releases a new study of top innovators worldwide as of November 2018.

Daphne Basel

2018-11-07 08:30:00 Wednesday ET

PwC releases a new study of top innovators worldwide as of November 2018.

PwC releases a new study of top innovators worldwide as of November 2018. This study assesses the top 1,000 global companies that spend the most on R&D

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Better corporate governance through worldwide convergence toward Berle-Means stock ownership dispersion

Fiona Sydney

2023-12-05 09:25:00 Tuesday ET

Better corporate governance through worldwide convergence toward Berle-Means stock ownership dispersion

Better corporate ownership governance through worldwide convergence toward Berle-Means stock ownership dispersion   Abstract We design a model

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