# Questions tagged [order-execution]

Order Execution is addressing the way to interact optimally with other market participants.

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### Reference for Aggregated Temporary Price Impact

I am wondering if someone knows relevant literature on the joint temporary price impact. The temporary price impact here refers to the difference between the best ask/bid price and transaction price ...
50 views

### LOBSTER Execution Price

I'm using LOBSTER data to observe order execution. I'm taking the message data and grouping events by order ID to trace their life cycle. I've noticed that, for example, if a buy order for 1000 is ...
1 vote
45 views

### Guidance on Execution Algo Passive order placer?

Could someone help with any relevant literature about building an Execution Algo and things to consider and keep in mind for optimal passive order placements? There are basic algos like TWAP/VWAP/POV ...
424 views

### Standard ways of simulating order books

What are some standard simple ways of simulating an order book? I have found this paper, but it is missing the implementation details. And more importantly, it appears that it ignores the size of the ...
1 vote
354 views

### Dealing with the Inventory Risk (Lehalle, Gueant, Tapia): Delta T parameter and actual order duration

Reference paper: Dealing with the Inventory Risk (Lehalle, Gueant, Tapia) ∆T is the time horizon over which you compute the intensities of aggressive orders (you get the k and A parameters) I have two ...
184 views

### Competitive levels in Limit Order Books

I've been doing some research on electronic Limit Order Books (mainly equities) and I was wondering if anyone has seen a paper on how to compute competitive limit order prices. By competitive, I mean ...
640 views

### Probability of getting a fill of a given size

Question is quite simple, what is the probability of getting a fill for: (i) a limit order of size - $s$ (ii) that is $\Delta$ away from the mid-price (iii) in the next $t$ minutes given ...
800 views

### Market Making Formulation

I'm developing a deep reinforcement learning based approach to market-making. In order to implement this, I need to define the appropriate actions and define environmental steps. While doing some ...
689 views

### What is the proportion of aggressive orders vs passive orders executed by different types of traders?

It's clear that each aggressive order (or market order or limit crossing BBO) is matched against the same volume of resting limit order(s). I'm interested in statistics per different types of ...
1 vote
231 views

### Improve Trade Execution For Mid-Frequency Futures Systems

I know this is kind of a very open ended question but I am struggling with the following problem: I have a futures trading system (operating on very liquid markets) that generates a prediction every ...
243 views

### Achieving an even distribution of orders in the queue

Baron Law, Frederi Viens: Market Making under a Weakly Consistent Limit Order Book Model contains the following paragraph "The market maker may achieve her target execution profile by ...
83 views

I am new to the eTrading and RFQ world and am learning these applications / services used within sell-side orgs like Investment banks in some details. As Far as I know , the RFQ engine involves the ...
213 views

### Is this an optimal stopping problem?

I am trying to work out how to approach a machine learning problem of 'learning' an optimal liquidation time/threshold, under some conditions, from historic data. The idea is a trader armed with this ...
1 vote
158 views

### Exchange order matching system/core for local testing

I am looking for a service that can be deployed locally or connected to it and would emulate the order matching system of exchange (a.k.a matching core). I remember, that I have seen on GitHub repo, ...
474 views

### Order Replacement Trade-off for a Market Maker

Whenever we replace an order, we lost priority since we are added to the end of the queue. If we dont replace an order, there is an obvious chance that we might get picked. There are other situations ...
108 views

### If a market maker wanted to avoid filling option orders from a specific account, what information could they use?

FIX has a few fields that do or could contain identifying information for equity option orders, the “Actionable Identifier” field in particular, although the OCC states here that “It will not be ...
365 views

### How were High Frequency Traders able to front-run in this example from Flash Boys?

I am re-reading Michael Lewis' Flash Boys book, and I have a question about how a High Frequency Trader was able to front-run an order in a particular example mentioned in the book. On page 78, ...
187 views

### Execution Strategies

I have a rather broad question. Not sure how to best put it. Does anyone have any papers/resources on how to improve the execution model of any strategy? Would it be different if strategy under ...
383 views

### Pegged Orders Positioning

I have a strategy that involves being first in the order queue in a tight market where the tick can change from bid to ask or ask to bid by one tick. I am looking at pegged orders so when the bid ...
1 vote
328 views

865 views

### Best way to buy and sell large volumes of crypto

I had a few questions about how to properly execute a large order of crypto currency without moving the price much. I know a lot of funds employ a TWAP/VWAP algorithm to liquidate or purchase a large ...
306 views

### Determine market and ice-berg order types from live trade and quote data

I have tick and quote live data from Polygon and Interactive Brokers. Looking at the conditions I can't see info on market or iceberg orders: https://polygon.io/docs/...
394 views

### D-Limit and Crumbling Quote Indicator

I've been following the development of the D-Limit order at IEX for some time. In the last couple of days I see the SEC has been sued by Citadel Securities for approving this order type. Can anyone ...
1 vote
125 views

### How do limit order prices meet?

I understand how limit orders work but I don't know how do they meet. Suppose the book of a ticker ABC is empty. Trader 1 sends a buy limit order for 1 share of ABC at 2\\$, and at the same time (...
2k views

### Optimal execution strategy

Can someone shed some light on optimal ways to execute medium sized orders ~2000 shares in the market? Unfortunately the execution algo I have access to is very dumb. It follows the top-of-book ...
89 views

### Optimal order placement in limit order markets

I am reading the paper: https://sci-hub.do/10.1080/14697688.2016.1190030 because I want to split the target shares in market order book and limit order book. I have a question when it comes to page 10 ...
1 vote
366 views

### Accurate model but execution in backtesting is losing money

I have a binary classification model that predicts BUY (1) and SELL (-1) with an out of sample F1 score of 71% (precision is 65% and recall is 80%). The model's output is a probability of a BUY label ...
237 views

### Markov Property in Optimal Execution?

After reading papers on reinforcement learning with respect to the problem of optimal execution (Nevmyvaka et al (2006), Ning et al (2018), etc), I was wondering if the Markov property assumed in all ...
6k views

### Send TRAIL STOP order when price hits a certain level, with IB TWS

Posting here after searching around and not finding any responses to basically the same question that I saw on EliteTrader, with another variant posted 10 years ago (update: the same question on Money)...
1 vote
1k views

### Can someone explain to me the square root law of market impact?

The square root law is shown here: Market impact, why square root? Let's say I want to execute 100 lots. But I have never executed before so I have no idea what n is historically. How would I ...
310 views

### How Crypto Exchanges handle overlapping orders when self trading is disabled?

I am unsure how a typical "matching engine" handles overlapping orders (in my case, Deribit). I would be just as interested in how any crypto exchange handles the situation. The user has ...
95 views

### Why does Canada allow merely 9% spread between the trailing stop price and its limit offset?

I'm assuming that "limit offset" just means "limit price". Help & How-to | Questrade There is no maximum allowable spread between the limit offset and the trailing stop price ...
92 views

### Optimal trading given frequently delivered directional forecast

I am interest in trading by optimally exploiting a directional forecast given by an oracle. The oracle predicts directionally the price of an asset (higher or lower than at the moment of forecast ...
3k views

### How to build an execution trading system with CQG API?

I am currently using CQG for spread trading and have a spread trading strategy in CQG chart. I am trying to automate my spread trading strategy in CQG, but CQG told me to look at CQG API samples to ...
4k views

### Difference between Order Expire and Order Done for Day (DFD)

Whats the difference between Order Expire and Order Done for Day (DFD) ? In general and from FIX protocol point of view.
181 views

### How does a Stock Exchange Provider implement a Stop-Loss Order?

If I place a stop loss order at my provider. Is this order directly forwarded to the stock exchange? Or does my provider implement this logic. If so, do they have to declare any delays that arise by ...
1 vote
183 views

### Do Institutions (large trading firms) use market orders?

It is well known that Institutional traders (Large trading firms, market makers) most of the time use LIMIT orders or Hidden limit orders. My question is, do they ever use market orders in their ...
42 views

### Best practice to optimize trading price, once I've already decided to sell or buy in next few days

I'm investing in long term. By different means not related to this question, I've already decided that I want to buy or sell a particular instrument, but I'm not in such a hurry: I'm still allowing a ...
97 views

### Translating Order books accounting for fees

I am trying to understand how fee structure plays into how I should best execute a trade. Say there are two exchanges with the following order book: Exchange A: Bid Qty | Bid Price | Ask Price | ...
442 views

### Market makers order execution on the order book

If a market maker is required to always have at least one order on a certain side of the order book (buy or sell), if there's no one else in the market and just market makers left on the book, will ...
963 views

### How is market buy order executed when meeting both market sell order and limit sell order?

Currently, we all know how market buy order is executed when meeting only limit sell order for time-priority rule.