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 6 June 2026

Blog+More

AYA free finbuzz ebook *Trump economic reform* as of January 2019

Andy Yeh Alpha

2019-01-31 08:40:00 Thursday ET

AYA free finbuzz ebook *Trump economic reform* as of January 2019

We offer a free ebook on the latest stock market news, economic trends, and investment memes as of January 2019:  https://www.dropbox.com/s/4d8z

+See More

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fundamental analysis of Microsoft (U.S. stock symbol: $MSFT).

Monica McNeil

2025-09-16 09:27:00 Tuesday ET

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fundamental analysis of Microsoft (U.S. stock symbol: $MSFT).

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fund

+See More

Incoming New York Fed President John Williams suggests that it is about time to end forward guidance.

Becky Berkman

2018-05-13 08:33:00 Sunday ET

Incoming New York Fed President John Williams suggests that it is about time to end forward guidance.

Incoming New York Fed President John Williams suggests that it is about time to end forward guidance in order to stop holding the financial market's han

+See More

Trump garners support from Senate and House of Representatives to pass the $1.5 trillion tax overhaul.

Daisy Harvey

2017-11-17 09:42:00 Friday ET

Trump garners support from Senate and House of Representatives to pass the $1.5 trillion tax overhaul.

The Trump administration garners congressional support from both Senate and the House of Representatives to pass the $1.5 trillion tax overhaul (Tax Cuts &a

+See More

Netflix raises its prices by 13% to 18% for U.S. subscribers.

Chanel Holden

2019-01-25 13:34:00 Friday ET

Netflix raises its prices by 13% to 18% for U.S. subscribers.

Netflix raises its prices by 13% to 18% for U.S. subscribers. The immediate stock market price soars 6.5% as a result of this upward price adjustment. The b

+See More

President Trump criticizes the potential media merger between AT&T and Time Warner.

Chanel Holden

2017-11-05 09:45:00 Sunday ET

President Trump criticizes the potential media merger between AT&T and Time Warner.

President Trump criticizes the potential media merger between AT&T and Time Warner, the latter of which owns the anti-Trump media network CNN. President

+See More