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Algorithmic trading has two meanings: - the process of taking in inputs such as market data, current news, and producing orders without human intervention. - the process of optimising the trading of a large order or the market making process.

49 votes
3 answers
19k views

How can we reverse engineer a market-making algorithm (HFT)?

Consider a market participant $A$ who is mechanically following an automated liquidity providing algorithm (HFT) in a number of large cap stocks on a specific exchange. Assume furthermore that we are …
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17 votes
3 answers
4k views

Order submission strategies of a rational market maker?

Consider a market maker that has decided to try to make a round-trip trade in stock A in order to capture the bid-ask spread. Assume furthermore that he has no current inventory in the stock A. To fu …
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11 votes
1 answer
1k views

A generic limit order book: What are the most important queries it should be able to answer?

Assume a class LimitOrderBook which represents a limit order book in a trading system. To be able to represent the limit order book a data handler reads a feed which adds data to the representation o …
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