Trading anomaly kill switch
First Claim
1. A system for the detection of abnormal trading activity directed to any of multiple exchanges and the halting of the detected abnormal trading activity without human intervention, the system comprising:
- multiple network taps, each network tap comprising a low-latency packet flow monitoring switch, a first of the multiple network taps being on an exchange side of order flow element hardware and the second network tap being on a side of the order flow element hardware opposite the exchange side, the first and second network taps each being configured to tap trade order message flow along a path passing through the order flow element hardware toward at least one of the multiple exchanges, the first and second network taps each being used to capture a copy of the trade order message flow;
at least one pNode, the pNode comprising a low-latency packet flow monitoring switch;
a computer-implemented anomaly detection and action stage computer comprising;
a first interface through which market transactional data can be received,a second interface through which the copy of the trade order message flow can be received via at least the first and second network taps, andnon-transient program storage storing programming that implements an anomaly detection engine and is configured to receive trade order flow information from the first and second network taps and analyze the received trade order information relative to market information byi) performing an exponential weighted averaging of trade order flow, on a per symbol basis within a sliding volume based window, directed from the trading system to all exchanges to which trades of that symbol can be directed by the trading system while accounting for order cancellations, order replacements, order rejections and order slicing,ii) performing a volume based exponential weighted averaging, on a per symbol basis, on trade update messages received during the sliding volume based window,iii) on a per symbol basis, checking for covariance between the exponential weighted average of the trade order flow and the exponential weighted average of the trade update messages, andiv) comparing trade order messages passing into the order flow element hardware with the trade order messages passing out of the order flow element hardware for consistency in quantity and value; and
if the anomaly detection engine detects eithera) anomalous trade order message flow for at least one symbol through the order flow element hardware, orb) an inflection point in the covariance indicating a market deviation, for the at least one symbol, that either increases, or persists for, a specified duration of time,then the anomaly detection engine will, according to a hierarchical protocol, automatically take a specified action to stop ongoing anomalous trading of the at least one symbol.
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Abstract
A system that can detect when abnormal trading activity is occurring and take action to halt the detected abnormal trading activity without human intervention using a computer-implemented anomaly detection and action stage that performs an exponential weighted averaging of trade order flow, on a per symbol basis within a sliding volume based window and a volume based exponential weighted averaging, on a per symbol basis, on trade update messages received during the sliding volume based window and checks for an inflection in covariance between them. A related method is also described.
26 Citations
20 Claims
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1. A system for the detection of abnormal trading activity directed to any of multiple exchanges and the halting of the detected abnormal trading activity without human intervention, the system comprising:
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multiple network taps, each network tap comprising a low-latency packet flow monitoring switch, a first of the multiple network taps being on an exchange side of order flow element hardware and the second network tap being on a side of the order flow element hardware opposite the exchange side, the first and second network taps each being configured to tap trade order message flow along a path passing through the order flow element hardware toward at least one of the multiple exchanges, the first and second network taps each being used to capture a copy of the trade order message flow; at least one pNode, the pNode comprising a low-latency packet flow monitoring switch; a computer-implemented anomaly detection and action stage computer comprising; a first interface through which market transactional data can be received, a second interface through which the copy of the trade order message flow can be received via at least the first and second network taps, and non-transient program storage storing programming that implements an anomaly detection engine and is configured to receive trade order flow information from the first and second network taps and analyze the received trade order information relative to market information by i) performing an exponential weighted averaging of trade order flow, on a per symbol basis within a sliding volume based window, directed from the trading system to all exchanges to which trades of that symbol can be directed by the trading system while accounting for order cancellations, order replacements, order rejections and order slicing, ii) performing a volume based exponential weighted averaging, on a per symbol basis, on trade update messages received during the sliding volume based window, iii) on a per symbol basis, checking for covariance between the exponential weighted average of the trade order flow and the exponential weighted average of the trade update messages, and iv) comparing trade order messages passing into the order flow element hardware with the trade order messages passing out of the order flow element hardware for consistency in quantity and value; and if the anomaly detection engine detects either a) anomalous trade order message flow for at least one symbol through the order flow element hardware, or b) an inflection point in the covariance indicating a market deviation, for the at least one symbol, that either increases, or persists for, a specified duration of time, then the anomaly detection engine will, according to a hierarchical protocol, automatically take a specified action to stop ongoing anomalous trading of the at least one symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A trading system comprising:
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multiple network taps, each comprising a low-latency packet flow monitoring switch coupled to trade flow paths within the trading system so as to capture trade order messages directed to at least one exchange of multiple exchanges for execution without adding latency to the trade order messages; at least one pNode comprising a low-latency packet flow monitoring switch; multiple components of order flow element (OFE) hardware, each having at least one of the multiple network taps on either side thereof, an anomaly detection and action stage computer coupled to the multiple network taps and configured to receive and analyze, on a per symbol basis, trade order information directed within the trading system towards the multiple exchanges based upon covariance between at least an exponential volume weighted average within sliding volume based windows for the trade order information relative to market trading as reported by the multiple exchanges and determine whether an inflection point in the covariance exists for any symbol and, when an inflection point exists for a symbol, determine whether either the covariance deviation rate or covariance deviation duration indicates anomalous trading activity and, if anomalous trading activity is indicated, trigger an automatic action to halt the anomalous trading activity while minimizing disruption of trading for other symbols by the trading system. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of automatically detecting anomalous trading activity, directed within a trading system to at least one exchange, the method comprising:
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receiving trade order information directed to exchanges for particular symbols at an anomaly detection and action stage computer; receiving trade update information from the exchanges at the anomaly detection and action stage computer; using the anomaly detection and action stage computer, analyzing, on an exponential volume weighted average basis within a sliding volume-based window, for each of the particular symbols, covariance between the trade order information and the trade update information in order to identify whether an inflection in the covariance exists for at least one symbol that is indicative of anomalous trading in that symbol, and when an inflection in the covariance exists, triggering a protocol that will halt the anomalous trading of that symbol. - View Dependent Claims (20)
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Specification