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Digital assets and currencies

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

Securities & exchanges

Auction rate security

An auction rate security (ARS) typically refers to a debt instrument (corporate or municipal bonds) with a long-term nominal maturity for which the interest rate is regularly reset through a Dutch auction. Since February 2008, most such auctions have failed, and the auction market has been largely frozen. In late 2008, investment banks that had marketed and distributed auction rate secur

Trading basics

Club deal

A club deal, in finance, refers to a leveraged buyout or other private equity investment that involves two or more private equity firms. It can also be referred as consortium or syndicated investment.

Banking

EarnIn

EarnIn is an American earnings management company that provides earned wage access services and other financial and payroll-related services.

Securities & exchanges

Kalshi

Kalshi Inc. is a prediction market platform based in Manhattan, New York City, that launched in July 2021. The platform is used primarily for sports betting, which constitutes more than 90% of site activity and 89% of revenue in 2025. Analysts describe activity on the platform as "heavily tied to the sports calendar". Individuals can place bets on other future outcomes, including economi

Trading basics

Prediction market

Prediction markets, also known as betting markets, information markets, decision markets, idea futures, or event derivatives, are open markets that enable the prediction of specific outcomes using financial incentives. They are exchange-traded markets established for trading bets in the outcome of various events.

Securities & exchanges

Securities class action

A securities class action (SCA), or securities fraud class action, is a lawsuit filed by investors who bought or sold a company's publicly traded securities within a specific period of time (known as a “class period”) and suffered economic injury as a result of violations of the securities laws.

Networks

Solana (blockchain platform)

Solana is a public blockchain platform that uses a proof-of-stake consensus mechanism and provides smart contract functionality. The platform's native cryptocurrency is SOL. Solana was founded in 2018 by Toly Yakovenko and Raj Gokal, and the network was launched in March 2020 by their San Francisco-based company, Solana Labs.