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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 26 September 2026

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A brief biography of Dr Andy Yeh

Andy Yeh Alpha

2023-06-19 10:31:00 Monday ET

A brief biography of Dr Andy Yeh

A brief biography of Dr Andy Yeh (PhD, MFE, MMS, BMS, FRM, and USPTO patent accreditation) Dr Andy Yeh is responsible for ensuring maximum sustainable me

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Apple and Samsung are the archrivals for the title of the world's top smart phone maker.

Olivia London

2018-06-25 12:43:00 Monday ET

Apple and Samsung are the archrivals for the title of the world's top smart phone maker.

Apple and Samsung are the archrivals for the title of the world's top smart phone maker. The recent patent lawsuit settlement between Apple and Samsung

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Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services.

John Fourier

2019-02-21 12:37:00 Thursday ET

Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services.

Apple shakes up senior leadership to initiate a new transition from iPhone revenue reliance to media and software services. These changes include the key pr

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Google CEO Sundar Pichai makes his debut testimony before Congress.

John Fourier

2018-12-15 14:38:00 Saturday ET

Google CEO Sundar Pichai makes his debut testimony before Congress.

Google CEO Sundar Pichai makes his debut testimony before Congress. The post-mid-term-election House Judiciary Committee bombards Pichai with key questions

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Snap cannot keep up with the Kardashians because its stock loses $1 billion market value after Kylie Jenner tweets about her decision to leave Snapchat.

Monica McNeil

2018-02-19 08:39:00 Monday ET

Snap cannot keep up with the Kardashians because its stock loses $1 billion market value after Kylie Jenner tweets about her decision to leave Snapchat.

Snap cannot keep up with the Kardashians because its stock loses market value 7% or $1 billion after Kylie Jenner tweets about her decision to leave Snapcha

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Broadcom announces its strategic plans to move its legal headquarters from Singapore to America.

Daphne Basel

2017-11-03 06:41:00 Friday ET

Broadcom announces its strategic plans to move its legal headquarters from Singapore to America.

Broadcom, a one-time division of Hewlett-Packard and now a semiconductor maker whose chips help power iPhone X, has announced its strategic plans to move it

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