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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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Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects.

Laura Hermes

2023-02-07 08:26:00 Tuesday ET

Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects.

Michel De Vroey delves into the global history of macroeconomic theories from real business cycles to persistent monetary effects. Michel De Vroey (2016)

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The Chinese new star board launches for tech firms to list at home.

Daphne Basel

2019-07-09 15:14:00 Tuesday ET

The Chinese new star board launches for tech firms to list at home.

The Chinese new star board launches for tech firms to list at home. The Nasdaq-equivalent new star board serves as a key avenue for Chinese tech companies t

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CEO overconfidence and corporate performance

Laura Hermes

2022-11-05 11:32:00 Saturday ET

CEO overconfidence and corporate performance

CEO overconfidence and corporate performance Malmendier and Tate (JFE 2008, JF 2005) argue that overconfident CEOs are more likely to initiate mergers an

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The Sino-American trade war may slash global GDP by $600 billion.

Monica McNeil

2019-06-15 10:28:00 Saturday ET

The Sino-American trade war may slash global GDP by $600 billion.

The Sino-American trade war may slash global GDP by $600 billion. If the Trump administration imposes tariffs on all the Chinese imports and China retaliate

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The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute.

Laura Hermes

2018-06-09 16:40:00 Saturday ET

The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute.

The Trump administration introduces new tariffs on $50 billion Chinese goods amid the persistent bilateral trade dispute. The tariffs effectively boost cost

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President Trump tweets that Apple can avoid tariff consequences by shifting its primary supply chain from China to America.

Olivia London

2018-09-11 18:36:00 Tuesday ET

President Trump tweets that Apple can avoid tariff consequences by shifting its primary supply chain from China to America.

President Trump tweets that Apple can avoid tariff consequences by shifting its primary supply chain from China to America. These Trump tariffs on another $

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