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 22 August 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

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty.

Charlene Vos

2019-07-17 12:37:00 Wednesday ET

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty.

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty. Both European Central Bank and Bank of Japan may consider

+See More

Facebook, Apple, Amazon, Netflix, and Google (FAANG) have been the motor of the S&P 500 stock market index.

Dan Rochefort

2018-06-11 07:44:00 Monday ET

Facebook, Apple, Amazon, Netflix, and Google (FAANG) have been the motor of the S&P 500 stock market index.

Facebook, Apple, Amazon, Netflix, and Google (FAANG) have been the motor of the S&P 500 stock market index. Several economic media commentators contend

+See More

China turns on its 5G telecom networks in the hot pursuit of global tech supremacy.

Becky Berkman

2019-12-07 11:30:00 Saturday ET

China turns on its 5G telecom networks in the hot pursuit of global tech supremacy.

China turns on its 5G telecom networks in the hot pursuit of global tech supremacy. China Telecom, China Unicom, and China Mobile disclose 5G fees of $18-$2

+See More

Trump imposes tariffs on steel and aluminum in a trade war with some exemptions for Canada and Mexico.

Olivia London

2018-03-01 07:35:00 Thursday ET

Trump imposes tariffs on steel and aluminum in a trade war with some exemptions for Canada and Mexico.

Trump imposes high tariffs on steel (25%) and aluminum (10%) in a new trade war with subsequent exemptions for Canada and Mexico. The Trump administration&#

+See More

World politics, economics, and new ideas from the Psychology of Money written by Morgan Housel

Daphne Basel

2023-10-19 08:26:00 Thursday ET

World politics, economics, and new ideas from the Psychology of Money written by Morgan Housel

World politics, economics, and new ideas from the Psychology of Money written by Morgan Housel We would like to provide both economic and non-economic th

+See More