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....

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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 6 December 2025

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Global economic uncertainty now lurks in a thick layer of mystery.

Jonah Whanau

2019-03-01 13:36:00 Friday ET

Global economic uncertainty now lurks in a thick layer of mystery.

Global economic uncertainty now lurks in a thick layer of mystery. This uncertainty arises from Sino-U.S. trade tension, Brexit fallout, monetary policy nor

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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)

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Warren Buffett invests in American stocks across energy, transport, and finance etc.

Daphne Basel

2017-07-07 10:33:00 Friday ET

Warren Buffett invests in American stocks across energy, transport, and finance etc.

Warren Buffett invests in American stocks across numerous industries such as energy, air transport, finance, technology, retail provision, and so forth.

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President Trump threatens to shut down the government if Democrats refuse to help approve $5 billion border wall finance.

Joseph Corr

2018-12-18 10:38:00 Tuesday ET

President Trump threatens to shut down the government if Democrats refuse to help approve $5 billion border wall finance.

President Trump threatens to shut down the U.S. government in 2019 if Democrats refuse to help approve $5 billion public finance for the southern border wal

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Dallas Federal Reserve Bank President Robert Kaplan expects the U.S. economy to grow at 2.2%-2.5% in 2019-2020.

Becky Berkman

2019-06-11 12:33:00 Tuesday ET

Dallas Federal Reserve Bank President Robert Kaplan expects the U.S. economy to grow at 2.2%-2.5% in 2019-2020.

Dallas Federal Reserve Bank President Robert Kaplan expects the U.S. economy to grow at 2.2%-2.5% in 2019-2020 as inflation rises a bit. In an interview wit

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Economic policy incrementalism for better fiscal and monetary policy coordination

Becky Berkman

2023-12-07 07:22:00 Thursday ET

Economic policy incrementalism for better fiscal and monetary policy coordination

Economic policy incrementalism for better fiscal and monetary policy coordination Traditionally, fiscal and monetary policies were made incrementally. In

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