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

President Trump praises great unity and progress at the G7 summit.

Rose Prince

2019-09-21 09:25:00 Saturday ET

President Trump praises great unity and progress at the G7 summit.

President Trump praises great unity and progress at the G7 summit with respect to Sino-U.S. trade conflict resolution, global climate change, containment fo

+See More

Government intervention remains a major influence over global trade, finance, and technology.

Amy Hamilton

2023-08-31 10:22:00 Thursday ET

Government intervention remains a major influence over global trade, finance, and technology.

Government intervention remains a major influence over global trade, finance, and technology. Nowadays, many governments tend to eschew common ownership

+See More

The new antitrust enforcement paradigm

Joseph Corr

2023-10-14 10:32:00 Saturday ET

The new antitrust enforcement paradigm

Jonathan Baker frames the current debate over antitrust merger review and enforcement in America. Jonathan Baker (2019)   The antitrust paradi

+See More

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes.

Jonah Whanau

2019-07-05 09:32:00 Friday ET

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes.

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes. The U.S. government pension and Medicare liabilitie

+See More

IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment.

Charlene Vos

2019-04-29 08:35:00 Monday ET

IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment.

IMF chief economist Gita Gopinath predicts no global recession with key downside risks at this delicate moment. First, trade tensions remain one of the key

+See More

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks.

Fiona Sydney

2023-04-07 12:29:00 Friday ET

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks.

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks. Timothy Geithner (2014)   Macrofinanci

+See More