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Digital assets and currencies

Understand assets, networks and trading mechanics with sources you can check.

Securities & exchanges

Arthur Dantchik

Arthur Dantchik (born 1957) is an American billionaire businessman and philanthropist who is a co-founder and the managing director of Susquehanna International Group, a Bala Cynwyd, Pennsylvania-based financial services firm founded in 1987. As of September 2026, Dantchik's net worth was estimated at $19.5 billion.

Trading basics

Economic materialism

Economic materialism, known colloquially simply as materialism, is a personal attitude that attaches importance to acquiring (and often consuming) material goods. The use of the term "materialistic" to describe an individual's personality or a society tends to have a negative or critical connotation. Rarely also called acquisitiveness, it is often associated with a value system that rega

Trading basics

Green guides

A green guide (or sustainability guide) is a set of rules and guidelines provided for the use of a general or selective population to achieve the goal of becoming more green or sustainable. The guide serves to direct individuals, agencies, companies, businesses, etc. to resources that can help them become more sustainable (or ‘green’), as sustainability becomes a more popular and growing

Securities & exchanges

Gregg Hymowitz

Gregg S. Hymowitz (born November 16, 1965) is an American billionaire who is the chairman, chief executive officer and founder of EnTrust Global, a diversified alternative investment firm. Hymowitz is an activist investor, known for his bold investment strategy. According to Forbes, he has an estimated personal net worth of $2 billion as of April 2025.

Securities & exchanges

Jeff Yass

Jeffrey Steven Yass (born July 1958) is an American billionaire businessman. According to Forbes, Yass had a net worth of US$77.8 billion as of September 2026, up from $27.6 billion in April 2024. The richest man in Pennsylvania, he is also the 25th richest in the world. He is a registered Libertarian who gives money to conservative super PACs including Club for Growth Action and the Pro

Trading basics

Revco

Revco Discount Drug Stores (known simply as Revco or Revco, D.S.), once based in Twinsburg, Ohio, was a major drug store chain operating through the Ohio Valley, the Mid-Atlantic states, and the Southeastern United States. The chain's stock was traded on the New York Stock Exchange under the ticker symbol RXR. Revco was sold to CVS Pharmacy for $2.8 billion ($5.21 billion in 2025) in Feb