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 17 January 2026

Blog+More

Angus Deaton analyzes the correlation between health and wealth in light of the economic origins of inequality worldwide.

James Campbell

2023-04-21 12:39:00 Friday ET

Angus Deaton analyzes the correlation between health and wealth in light of the economic origins of inequality worldwide.

Angus Deaton analyzes the correlation between health and wealth in light of the economic origins of inequality worldwide. Angus Deaton (2015)  

+See More

Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazon.

Olivia London

2019-07-23 09:22:00 Tuesday ET

Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazon.

Harvard economic platform researcher Dipayan Ghosh proposes some alternative solutions to breaking up tech titans such as Facebook, Google, Apple, and Amazo

+See More

President Trump criticizes the potential media merger between AT&T and Time Warner.

Chanel Holden

2017-11-05 09:45:00 Sunday ET

President Trump criticizes the potential media merger between AT&T and Time Warner.

President Trump criticizes the potential media merger between AT&T and Time Warner, the latter of which owns the anti-Trump media network CNN. President

+See More

Zillow share price plunges 20% year-to-date as Redfin and Trulia also experience an economic slowdown in the real estate market.

Daisy Harvey

2018-11-17 09:33:00 Saturday ET

Zillow share price plunges 20% year-to-date as Redfin and Trulia also experience an economic slowdown in the real estate market.

Zillow share price plunges 20% year-to-date as its competitors Redfin and Trulia also experience an economic slowdown in the real estate market. The real es

+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

China poses new economic, technological, and military threats to the U.S. and many western allies.

Joseph Corr

2024-02-05 11:26:00 Monday ET

China poses new economic, technological, and military threats to the U.S. and many western allies.

China poses new economic, technological, and military threats to the U.S. and many western allies. In the U.S. government assessment, China poses new eco

+See More