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 12 September 2026

Blog+More

The U.S. further derisks and decouples from China.

Peter Prince

2023-05-31 03:15:40 Wednesday ET

The U.S. further derisks and decouples from China.

The U.S. further derisks and decouples from China.   Why does the U.S. seek to further economically decouple from China? In recent times, th

+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

The U.S. federal government debt has risen from less than 40% of total GDP about a decade ago to 78% as of May 2018.

John Fourier

2018-06-01 07:30:00 Friday ET

The U.S. federal government debt has risen from less than 40% of total GDP about a decade ago to 78% as of May 2018.

The U.S. federal government debt has risen from less than 40% of total GDP about a decade ago to 78% as of May 2018. The Congressional Budget Office predict

+See More

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI).

Chanel Holden

2018-07-19 18:38:00 Thursday ET

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI).

Goldman Sachs chief economist Jan Hatzius proposes designing a new Financial Conditions Index (FCI) to be a weighted-average of interest rates, exchange rat

+See More

The Economist Intelligence Unit (EIU) continues to track major business risks in light of volatile stock markets.

Fiona Sydney

2019-01-11 10:33:00 Friday ET

The Economist Intelligence Unit (EIU) continues to track major business risks in light of volatile stock markets.

The Economist Intelligence Unit (EIU) continues to track major business risks in light of volatile stock markets, elections, and geopolitics. EIU monitors g

+See More

Warren Buffett warns that the current cap ratio of U.S. stock market capitalization to real GDP seems to be much higher than the long-run average benchmark.

James Campbell

2019-08-24 14:38:00 Saturday ET

Warren Buffett warns that the current cap ratio of U.S. stock market capitalization to real GDP seems to be much higher than the long-run average benchmark.

Warren Buffett warns that the current cap ratio of U.S. stock market capitalization to real GDP seems to be much higher than the long-run average benchmark.

+See More