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....

+See More


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

Blog+More

Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most corporations.

Daisy Harvey

2023-07-28 11:28:00 Friday ET

Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most corporations.

Lucian Bebchuk and Jesse Fried critique that executive pay often cannot help explain the stock return and operational performance of most U.S. public corpor

+See More

Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025.

James Campbell

2025-02-02 11:28:00 Sunday ET

Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025.

Our proprietary alpha investment model outperforms most stock market indexes from 2017 to 2025. Our proprietary alpha investment model outperforms the ma

+See More

E.U. antitrust regulators impose a fine on Qualcomm for advancing its exclusive microchip deal with Apple.

Fiona Sydney

2018-01-17 05:30:00 Wednesday ET

E.U. antitrust regulators impose a fine on Qualcomm for advancing its exclusive microchip deal with Apple.

European Union antitrust regulators impose a fine on Qualcomm for advancing its key exclusive microchip deal with Apple to block out rivals such as Intel an

+See More

Thomas Piketty connects the dots between economic growth and inequality worldwide with long-term global empirical evidence.

Chanel Holden

2023-05-28 10:24:00 Sunday ET

Thomas Piketty connects the dots between economic growth and inequality worldwide with long-term global empirical evidence.

Thomas Piketty connects the dots between economic growth and inequality worldwide with long-term global empirical evidence. Thomas Piketty (2017) &nbs

+See More

Warren Buffett shares his fresh economic insights and value investment strategies at the Berkshire Hathaway shareholder forum.

Daphne Basel

2018-05-05 07:33:00 Saturday ET

Warren Buffett shares his fresh economic insights and value investment strategies at the Berkshire Hathaway shareholder forum.

Warren Buffett shares his fresh economic insights and value investment strategies at the Berkshire Hathaway shareholder forum in May 2018 despite the new GA

+See More

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fundamental analysis of Uber Technologies (U.S. stock symbol: $UBER).

Daphne Basel

2025-10-10 12:31:00 Friday ET

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fundamental analysis of Uber Technologies (U.S. stock symbol: $UBER).

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fund

+See More