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 5 September 2026

Blog+More

Donald Trump and Kim Jong Un meet, talk, and shake hands in the historic U.S.-North-Korean peace summit in Singapore.

Daphne Basel

2018-06-06 09:39:00 Wednesday ET

Donald Trump and Kim Jong Un meet, talk, and shake hands in the historic U.S.-North-Korean peace summit in Singapore.

Donald Trump and Kim Jong Un meet, talk, and shake hands in the historic peace summit between America and North Korea in Singapore. At the start of the bila

+See More

Most major economies grow with great synchronicity several years after the global financial crisis.

John Fourier

2018-01-19 11:32:00 Friday ET

Most major economies grow with great synchronicity several years after the global financial crisis.

Most major economies grow with great synchronicity several years after the global financial crisis. These economies experience high stock market valuation,

+See More

Management consultants can build sustainable trust-driven client relations through the accelerant curve of business value creation.

Monica McNeil

2020-11-17 08:27:00 Tuesday ET

Management consultants can build sustainable trust-driven client relations through the accelerant curve of business value creation.

Management consultants can build sustainable trust-driven client relations through the accelerant curve of business value creation. Alan Weiss (2016)

+See More

What are the best online stock market investment tools?

Amy Hamilton

2021-07-07 05:22:00 Wednesday ET

What are the best online stock market investment tools?

What are the best online stock market investment tools? Stock trading has seen an explosion since the start of the pandemic. As people lost their jobs an

+See More

We need crowdfunds to support our next responsive web design and iOS and Android app development.

Andy Yeh Alpha

2019-01-13 12:37:00 Sunday ET

We need crowdfunds to support our next responsive web design and iOS and Android app development.

We need crowdfunds to support our next responsive web design and iOS and Android app development. Upon successful campaign completion, we will provide an eb

+See More

Main reasons for share repurchases

Apple Boston

2022-09-25 09:34:00 Sunday ET

Main reasons for share repurchases

Main reasons for share repurchases Temporary market undervaluation often induces corporate incumbents to initiate a share repurchase program to boost the

+See More