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 29 August 2026

Blog+More

Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services.

John Fourier

2019-02-21 12:37:00 Thursday ET

Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services.

Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services. These changes include the key pr

+See More

Barry Eichengreen compares the Great Depression of the 1930s and the Great Recession as historical episodes of economic woes.

Olivia London

2023-03-21 11:28:00 Tuesday ET

Barry Eichengreen compares the Great Depression of the 1930s and the Great Recession as historical episodes of economic woes.

Barry Eichengreen compares the Great Depression of the 1930s and the Great Recession as historical episodes of economic woes. Barry Eichengreen (2016)

+See More

Jim Cramer provides 5 key reasons against the purchase and use of cryptocurrencies such as Bitcoin, Ethereum, and Ripple.

Becky Berkman

2017-11-23 10:42:00 Thursday ET

Jim Cramer provides 5 key reasons against the purchase and use of cryptocurrencies such as Bitcoin, Ethereum, and Ripple.

As the TV host of Mad Money, Jim Cramer provides 5 key reasons against the purchase and use of cryptocurrencies such as Bitcoin. First, no one knows the ano

+See More

BAC chief investment strategist Michael Hartnett points out that U.S. corporate debt accumulation can cause the next financial crisis.

John Fourier

2018-09-23 08:37:00 Sunday ET

BAC chief investment strategist Michael Hartnett points out that U.S. corporate debt accumulation can cause the next financial crisis.

Bank of America Merrill Lynch's chief investment strategist Michael Hartnett points out that U.S. corporate debt (not household credit supply or bank ca

+See More

The Federal Reserve System conducts monetary policy decisions, interest rate adjustments, and inter-bank payment operations.

Dan Rochefort

2023-03-28 11:30:00 Tuesday ET

The Federal Reserve System conducts monetary policy decisions, interest rate adjustments, and inter-bank payment operations.

The Federal Reserve System conducts monetary policy decisions, interest rate adjustments, and inter-bank payment operations. Peter Conti-Brown (2017)

+See More

Bill Gates and Warren Buffett shared their best business decisions in a 1998 panel discussion.

Laura Hermes

2017-11-13 07:42:00 Monday ET

Bill Gates and Warren Buffett shared their best business decisions in a 1998 panel discussion.

Top 2 wealthiest men Bill Gates and Warren Buffett shared their best business decisions in a 1998 panel discussion with students at the University of Washin

+See More