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 11 April 2026

Blog+More

The global pandemic crisis helps reshape international finance, trade, and technology.

James Campbell

2021-02-01 10:19:00 Monday ET

The global pandemic crisis helps reshape international finance, trade, and technology.

In recent times, the International Monetary Fund (IMF) predicts that the fiscal-debt-to-GDP ratio of most rich economies would rise from 95% in 2018 to 135%

+See More

David Solomon succeeds Lloyd Blankfein as the new CEO of Goldman Sachs.

Fiona Sydney

2018-03-09 08:33:00 Friday ET

David Solomon succeeds Lloyd Blankfein as the new CEO of Goldman Sachs.

David Solomon succeeds Lloyd Blankfein as the new CEO of Goldman Sachs. Unlike his predecessors Lloyd Blankfein and Gary Cohn, Solomon has been an investmen

+See More

President Trump allows most JFK files to be released to the general public.

James Campbell

2017-09-25 09:42:00 Monday ET

President Trump allows most JFK files to be released to the general public.

President Trump has allowed most JFK files to be released to the general public. This batch of documents reveals many details of the assassination of Presid

+See More

Former White House chief economic advisor Gary Cohn points out that there is no instant cure for the Sino-U.S. trade dilemma.

Rose Prince

2018-11-23 09:39:00 Friday ET

Former White House chief economic advisor Gary Cohn points out that there is no instant cure for the Sino-U.S. trade dilemma.

Former White House chief economic advisor Gary Cohn points out that there is no instant cure for the Sino-U.S. trade dilemma. After the U.S. midterm electio

+See More

Nobel Laureate Paul Milgrom explains the U.S. incentive auction of wireless spectrum allocation from TV broadcasters to telecoms.

Rose Prince

2023-11-21 11:32:00 Tuesday ET

Nobel Laureate Paul Milgrom explains the U.S. incentive auction of wireless spectrum allocation from TV broadcasters to telecoms.

Nobel Laureate Paul Milgrom explains the U.S. incentive auction of wireless spectrum allocation from TV broadcasters to telecoms. Paul Milgrom (2019)

+See More

The Federal Communications Commission (FCC) considers its majority vote to dismantle net neutrality rules.

John Fourier

2017-12-13 06:39:00 Wednesday ET

The Federal Communications Commission (FCC) considers its majority vote to dismantle net neutrality rules.

The Federal Communications Commission (FCC) has decided its majority vote to dismantle rules and regulations of most Internet service providers (ISPs) that

+See More