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 27 June 2026

Blog+More

Stock Synopsis: High-speed 5G broadband and mobile cloud telecommunication

Charlene Vos

2024-04-02 04:45:41 Tuesday ET

Stock Synopsis: High-speed 5G broadband and mobile cloud telecommunication

Stock Synopsis: High-speed 5G broadband and mobile cloud telecommunication In the U.S. telecom industry for high-speed Internet connections and mobile cl

+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 AT&T (U.S. stock symbol: $T).

Apple Boston

2025-10-05 17:31:00 Sunday 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 AT&T (U.S. stock symbol: $T).

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

President Trump introduces $50 billion tariffs on Chinese products and new limits on Chinese high-tech investments in America.

Apple Boston

2018-05-25 07:30:00 Friday ET

President Trump introduces $50 billion tariffs on Chinese products and new limits on Chinese high-tech investments in America.

President Trump introduces $50 billion tariffs on Chinese products and new limits on Chinese high-tech investments in America. This new round of tariffs

+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

Trump tariffs begin to bite U.S. corporate profits from Ford and Harley-Davidson to Caterpillar and Walmart etc.

James Campbell

2018-10-25 10:36:00 Thursday ET

Trump tariffs begin to bite U.S. corporate profits from Ford and Harley-Davidson to Caterpillar and Walmart etc.

Trump tariffs begin to bite U.S. corporate profits from Ford and Harley-Davidson to Caterpillar and Walmart etc. U.S. corporate profit growth remains high a

+See More

San Francisco Fed CEO Mary Daly suggests that trade escalation is not the only risk in the global economy.

Rose Prince

2019-06-19 09:27:00 Wednesday ET

San Francisco Fed CEO Mary Daly suggests that trade escalation is not the only risk in the global economy.

San Francisco Fed CEO Mary Daly suggests that trade escalation is not the only risk in the global economy. Due to the current Sino-U.S. trade tension, the g

+See More