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 17 October 2026

Blog+More

The Federal Reserve proposes softening the Volcker rule that prevents banks from placing risky bets on securities with deposit finance.

James Campbell

2018-05-27 08:33:00 Sunday ET

The Federal Reserve proposes softening the Volcker rule that prevents banks from placing risky bets on securities with deposit finance.

The Federal Reserve proposes softening the Volcker rule that prevents banks from placing risky bets on securities with deposit finance. As part of the po

+See More

Louis Kaplow strives to find a delicate balance between efficiency gains and redistributive taxes in the social welfare function.

Chanel Holden

2023-07-07 10:29:00 Friday ET

Louis Kaplow strives to find a delicate balance between efficiency gains and redistributive taxes in the social welfare function.

Louis Kaplow strives to find a delicate balance between efficiency gains and redistributive taxes in the social welfare function. Louis Kaplow (2010)

+See More

We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos.

Becky Berkman

2019-07-19 18:40:00 Friday ET

We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos.

We can decipher valuable lessons from the annual letters to shareholders written by Amazon CEO Jeff Bezos. Amazon is highly customer-centric because the wor

+See More

U.S. bank oligarchy has become bigger and more resistant to public regulation after the global financial crisis.

Laura Hermes

2020-02-19 14:35:00 Wednesday ET

U.S. bank oligarchy has become bigger and more resistant to public regulation after the global financial crisis.

The U.S. bank oligarchy has become bigger, more profitable, and more resistant to public regulation after the global financial crisis. Simon Johnson and

+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 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

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