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 10 October 2026

Blog+More

Presidents Trump and Xi agree on an interim trade truce at the G20 summit in Argentina.

Apple Boston

2018-12-09 08:44:00 Sunday ET

Presidents Trump and Xi agree on an interim trade truce at the G20 summit in Argentina.

President Trump meets with Chinese President Xi again at the G20 summit in the city of Buenos Aires, Argentina, in late-November 2018. President Donald Trum

+See More

Generative artificial intelligence (Gen AI) uses large language models (LLM) to create online contents with better human productivity.

Monica McNeil

2024-10-31 09:26:00 Thursday ET

Generative artificial intelligence (Gen AI) uses large language models (LLM) to create online contents with better human productivity.

Generative artificial intelligence (Gen AI) uses large language models (LLM) and content generation tools to enhance human lives with better productivity.

+See More

Amazon acquires an Internet pharmacy PillPack in order to better compete with Walgreens and many other drug distributors.

Peter Prince

2018-06-29 11:41:00 Friday ET

Amazon acquires an Internet pharmacy PillPack in order to better compete with Walgreens and many other drug distributors.

Amazon acquires an Internet pharmacy PillPack in order to better compete with Walgreens Boots Alliance, CVS Health, Rite Aid, and many other drug distributo

+See More

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty.

Charlene Vos

2019-07-17 12:37:00 Wednesday ET

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty.

Gold prices surge above $1400 per ounce amid global trade tension and economic policy uncertainty. Both European Central Bank and Bank of Japan may consider

+See More

Apple upstream semiconductor chipmaker TSMC boosts capital expenditures to $15 billion with almost 10% revenue growth by December 2019.

John Fourier

2019-11-11 09:36:00 Monday ET

Apple upstream semiconductor chipmaker TSMC boosts capital expenditures to $15 billion with almost 10% revenue growth by December 2019.

Apple upstream semiconductor chipmaker TSMC boosts capital expenditures to $15 billion with almost 10% revenue growth by December 2019. Due to high global d

+See More

Product market competition and online ecommerce help constrain money supply growth with low inflation.

Peter Prince

2019-09-25 15:33:00 Wednesday ET

Product market competition and online ecommerce help constrain money supply growth with low inflation.

Product market competition and online e-commerce help constrain money supply growth with low inflation. Key e-commerce retailers such as Amazon, Alibaba, an

+See More