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Direct Edge was a stock exchange operating two separate platforms, EDGA Exchange and EDGX Exchange. [ 1 ] It was based in Jersey City, New Jersey. Beginning in March 2009, Direct Edge's market share ranged from 9% to 12% of U.S. equities trading volume, and regularly traded one to two billion shares per day.
Definition. In formal terms, a directed graph is an ordered pair G = (V, A) where [1] A is a set of ordered pairs of vertices, called arcs, directed edges (sometimes simply edges with the corresponding set named E instead of A), arrows, or directed lines. It differs from an ordinary or undirected graph, in that the latter is defined in terms of ...
Direct Edge's response to this in 2009 was that the data that flash trading used reduced market impact, increased average size of executed orders, reduced trading latency, and provided additional liquidity. Direct Edge also allowed all of its subscribers to determine whether they want their orders to participate in flash trading or not so brokers have the option to opt out of flash orders on ...
Directed acyclic graph. In mathematics, particularly graph theory, and computer science, a directed acyclic graph (DAG) is a directed graph with no directed cycles. That is, it consists of vertices and edges (also called arcs), with each edge directed from one vertex to another, such that following those directions will never form a closed loop ...
High-frequency trading (HFT) is a type of algorithmic trading in finance characterized by high speeds, high turnover rates, and high order-to-trade ratios that leverages high-frequency financial data and electronic trading tools. [1][2][3] While there is no single definition of HFT, among its key attributes are highly sophisticated algorithms, co-location, and very short-term investment ...
The edge-connectivity λ(G) is the size of a smallest edge cut, and the local edge-connectivity λ(u, v) of two vertices u, v is the size of a smallest edge cut disconnecting u from v. Again, local edge-connectivity is symmetric. A graph is called k-edge-connected if its edge connectivity is k or greater.
Shortest path (A, C, E, D, F) between vertices A and F in the weighted directed graph. In graph theory, the shortest path problem is the problem of finding a path between two vertices (or nodes) in a graph such that the sum of the weights of its constituent edges is minimized. [1]
Algorithmic trading is a method of executing orders using automated pre-programmed trading instructions accounting for variables such as time, price, and volume. [1] This type of trading attempts to leverage the speed and computational resources of computers relative to human traders. In the twenty-first century, algorithmic trading has been ...
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