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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 29 August 2026

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House Judiciary Committee summons senior executive reps of the tech titans to assess online platforms and their market power.

Peter Prince

2019-08-18 11:33:00 Sunday ET

House Judiciary Committee summons senior executive reps of the tech titans to assess online platforms and their market power.

House Judiciary Committee summons senior executive reps of the tech titans to assess online platforms and their market power. These companies are Facebook,

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U.S. trade envoy Robert Lighthizer proposes America to require regular touchpoints to ensure Sino-U.S. trade deal enforcement.

Daisy Harvey

2019-03-17 14:35:00 Sunday ET

U.S. trade envoy Robert Lighthizer proposes America to require regular touchpoints to ensure Sino-U.S. trade deal enforcement.

U.S. trade rep Robert Lighthizer proposes America to require regular touchpoints to ensure Sino-U.S. trade deal enforcement. America has to maintain the thr

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Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation.

Jonah Whanau

2017-12-11 08:42:00 Monday ET

Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation.

Fed Chair Janet Yellen says the current high stock market valuation does not mean overvaluation. A stock market quick fire sale would pose minimal risk to t

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It may be illegal for institutional investors to buy-and-hold large equity stakes in a less competitive industry with high market concentration.

Olivia London

2017-11-27 07:39:00 Monday ET

It may be illegal for institutional investors to buy-and-hold large equity stakes in a less competitive industry with high market concentration.

Is it anti-competitive and illegal for passive indexers and mutual funds to place large stock bets in specific industries with high market concentration? Ha

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Clayton Christensen defines the core dilemma of corporate innovation with sustainable and disruptive advances.

Daisy Harvey

2020-04-17 07:23:00 Friday ET

Clayton Christensen defines the core dilemma of corporate innovation with sustainable and disruptive advances.

Clayton Christensen defines and delves into the core dilemma of corporate innovation with sustainable and disruptive advances. Clayton Christensen (2000)

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Macro economic innovations and asset alphas show significant mutual causation.

Olivia London

2023-12-03 11:33:00 Sunday ET

Macro economic innovations and asset alphas show significant mutual causation.

Macro innovations and asset alphas show significant mutual causation. April 2023   This brief article draws from the recent research publicati

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