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 20 June 2026

Blog+More

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes.

Jonah Whanau

2019-07-05 09:32:00 Friday ET

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes.

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes. The U.S. government pension and Medicare liabilitie

+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 Texas Instruments (U.S. stock symbol: $TXN).

Monica McNeil

2025-10-13 12:32:00 Monday 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 Texas Instruments (U.S. stock symbol: $TXN).

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

The financial services industry needs fewer banks worldwide.

Daphne Basel

2022-08-30 10:32:00 Tuesday ET

The financial services industry needs fewer banks worldwide.

The financial services industry needs fewer banks worldwide. As long as banks have existed in human history, their managers have realized how not all dep

+See More

American allies assist AT&T and Verizon in implementing 5G telecommunication technology.

Daisy Harvey

2019-01-01 03:34:48 Tuesday ET

American allies assist AT&T and Verizon in implementing 5G telecommunication technology.

American allies assist AT&T and Verizon in implementing 5G telecommunication technology in the U.S. as such allies ban the use of HuaWei 5G telecom equi

+See More

Our fun podcasts deep-dive into the current global trends, topics, and issues in support of better stock market investment decisions.

Daphne Basel

2026-02-14 11:26:00 Saturday ET

Our fun podcasts deep-dive into the current global trends, topics, and issues in support of better stock market investment decisions.

Our AYA fun podcasts deep-dive into the current global trends, topics, and issues in macro finance, political economy, public policy, strategic management,

+See More

There are several highlights from the first news conference after Trump's presidential election victory.

Monica McNeil

2017-01-23 09:30:00 Monday ET

There are several highlights from the first news conference after Trump's presidential election victory.

There are several highlights from the first news conference after Trump's presidential election victory: The Trump administration will repeal-and-

+See More