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 10 October 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

Apple provides positive forward guidance on both revenue and profit forecasts for iPhones, iPads, and MacBooks.

James Campbell

2019-02-09 08:33:00 Saturday ET

Apple provides positive forward guidance on both revenue and profit forecasts for iPhones, iPads, and MacBooks.

Apple provides positive forward guidance on both revenue and profit forecasts for iPhones, iPads, and MacBooks. In the Christmas 2018 festive season, MacBoo

+See More

Foreign majority owners offer Sprint and T-Mobile to stop using HuaWei critical technologies after the U.S. telecom merger.

Daphne Basel

2018-12-20 13:40:00 Thursday ET

Foreign majority owners offer Sprint and T-Mobile to stop using HuaWei critical technologies after the U.S. telecom merger.

T-Mobile and Sprint indicate that the U.S. is likely to approve their merger plan as they take the offer from foreign owners to stop using HuaWei telecom te

+See More

Warren Buffett offloads a few stocks from the Berkshire Hathaway portfolio in November 2018.

Peter Prince

2018-11-27 10:37:00 Tuesday ET

Warren Buffett offloads a few stocks from the Berkshire Hathaway portfolio in November 2018.

Warren Buffett offloads a few stocks from the Berkshire Hathaway portfolio in mid-November 2018. The latest S.E.C. report shows that the Oracle of Omaha sol

+See More

Blue-ocean strategists shift focus from current competitors to alternative non-customers with new market space.

Apple Boston

2020-05-21 11:30:00 Thursday ET

Blue-ocean strategists shift focus from current competitors to alternative non-customers with new market space.

Most blue-ocean strategists shift fundamental focus from current competitors to alternative non-customers with new market space. W. Chan Kim and Renee Ma

+See More

Amy Chua and Jed Rubenfeld suggest that relatively successful ethnic groups exhibit common cultural traits in America.

Laura Hermes

2023-05-21 12:26:00 Sunday ET

Amy Chua and Jed Rubenfeld suggest that relatively successful ethnic groups exhibit common cultural traits in America.

Amy Chua and Jed Rubenfeld suggest that relatively successful ethnic groups exhibit common cultural traits in America. Amy Chua and Jed Rubenfeld (2015)

+See More