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 21 February 2026

Blog+More

Macro eigenvalue volatility helps predict some recent episodes of high economic policy uncertainty.

James Campbell

2020-09-15 08:38:00 Tuesday ET

Macro eigenvalue volatility helps predict some recent episodes of high economic policy uncertainty.

Macro eigenvalue volatility helps predict some recent episodes of high economic policy uncertainty, recession risk, or rare events such as the recent rampan

+See More

What are the mainstream technological advances in the global auto industry?

Chanel Holden

2024-04-30 09:30:00 Tuesday ET

What are the mainstream technological advances in the global auto industry?

With clean and green energy resources and electric vehicles, the global auto industry now navigates at a newer and faster pace. Both BYD and Tesla have

+See More

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI).

Chanel Holden

2018-07-19 18:38:00 Thursday ET

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI).

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI) to be a weighted-average of interest rates, exchange rat

+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

Blackrock asset research director Andrew Ang shares his economic insights into fundamental factors for global asset management.

Apple Boston

2019-07-29 11:33:00 Monday ET

Blackrock asset research director Andrew Ang shares his economic insights into fundamental factors for global asset management.

Blackrock asset research director Andrew Ang shares his economic insights into fundamental factors for global asset management. As Ang indicates in an inter

+See More

Conor McGregor learns a major money lesson from LeBron James.

Daisy Harvey

2019-08-07 12:33:00 Wednesday ET

Conor McGregor learns a major money lesson from LeBron James.

Conor McGregor learns a major money lesson from LeBron James. This lesson suggests that James spends about $1.5 million on his own body each year. The $1.5

+See More