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 20 December 2025

Blog+More

Global economic uncertainty now lurks in a thick layer of mystery.

Jonah Whanau

2019-03-01 13:36:00 Friday ET

Global economic uncertainty now lurks in a thick layer of mystery.

Global economic uncertainty now lurks in a thick layer of mystery. This uncertainty arises from Sino-U.S. trade tension, Brexit fallout, monetary policy nor

+See More

Central bank independence remains important for core inflation containment in the current age of political populism.

Jonah Whanau

2019-04-21 10:07:54 Sunday ET

Central bank independence remains important for core inflation containment in the current age of political populism.

Central bank independence remains important for core inflation containment in the current age of political populism. In accordance with the dual mandate of

+See More

President Trump considers imposing retaliatory economic sanctions on Chinese products.

Peter Prince

2018-01-10 08:40:00 Wednesday ET

President Trump considers imposing retaliatory economic sanctions on Chinese products.

President Trump considers imposing retaliatory economic sanctions on Chinese products and services in direct response to China's theft and infringement

+See More

Goldman Sachs follows the timeless business principles and best practices in financial market design and investment management.

Chanel Holden

2020-02-26 09:30:00 Wednesday ET

Goldman Sachs follows the timeless business principles and best practices in financial market design and investment management.

Goldman Sachs follows the timeless business principles and best practices in financial market design and investment management. William Cohan (2011) M

+See More

President Trump sounds smart when he comes up with a fresh plan to retire $15 trillion national debt.

Peter Prince

2018-08-07 07:33:00 Tuesday ET

President Trump sounds smart when he comes up with a fresh plan to retire $15 trillion national debt.

President Trump sounds smart when he comes up with a fresh plan to retire $15 trillion national debt. This plan entails taxing American consumers and produc

+See More

PayPal earns great fintech reputation from its massive worldwide network of 250+ million users.

Peter Prince

2018-10-19 13:37:00 Friday ET

PayPal earns great fintech reputation from its massive worldwide network of 250+ million users.

PayPal earns great fintech reputation from its massive worldwide network of 250+ million active users. As PayPal beats the revenue and profit expectations o

+See More