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 11 July 2026

Blog+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 Netflix (U.S. stock symbol: $NFLX).

Daisy Harvey

2025-10-03 10:31:00 Friday 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 Netflix (U.S. stock symbol: $NFLX).

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

McKinsey Global Institute analyzes 315 U.S. cities in terms of how tech automation affects their workers in the next 10 years.

Dan Rochefort

2019-08-10 21:44:00 Saturday ET

McKinsey Global Institute analyzes 315 U.S. cities in terms of how tech automation affects their workers in the next 10 years.

McKinsey Global Institute analyzes 315 U.S. cities and 3,000 counties in terms of how tech automation affects their workers in the next 5 to 10 years. This

+See More

OraSure and its subsidiary DNA Genotek specialize in the lean production of home DNA spit tubes.

Monica McNeil

2019-04-01 08:28:00 Monday ET

OraSure and its subsidiary DNA Genotek specialize in the lean production of home DNA spit tubes.

OraSure and its subsidiary DNA Genotek specialize in the lean production of home DNA spit tubes. OraSure extracts core genetic information from microbiome s

+See More

The current Trump stock market rally has been impressive from November 2016 to October 2017.

John Fourier

2017-10-09 09:34:00 Monday ET

The current Trump stock market rally has been impressive from November 2016 to October 2017.

The current Trump stock market rally has been impressive from November 2016 to October 2017. S&P 500 has risen by 21.1% since the 2016 presidential elec

+See More

Is higher stock market concentration good or bad for Corporate America?

Laura Hermes

2025-03-03 04:11:06 Monday ET

Is higher stock market concentration good or bad for Corporate America?

Is higher stock market concentration good or bad for Corporate America? In recent years, S&P 500 stock market returns exhibit spectacular concentrati

+See More

Tech unicorns blitzscale business niches for better scale economies from Uber and Lyft to Pinterest, Slack, and Zoom.

Dan Rochefort

2019-05-03 11:29:00 Friday ET

Tech unicorns blitzscale business niches for better scale economies from Uber and Lyft to Pinterest, Slack, and Zoom.

Key tech unicorns blitzscale business niches for better scale economies from Uber and Lyft to Pinterest, Slack, and Zoom. LinkedIn cofounder and serial entr

+See More