The prioritized list of resting orders held by the exchange. Each limit order represents an obligation to buy or sell. The most common type of order book is prioritized first by price and them by time. Another variation is the price/size book, where larger size results in higher priority.

learn more… | top users | synonyms

0
votes
0answers
26 views

How do you call this order matching process in trading?

for example, in the order book ASK side has this orders (price/qty): 20000@2000 20500@400 and trader sends FOK: 50000@2100 (price/qty). it can be two scenarios here: 1) FOK can take 2000 from the ...
3
votes
1answer
54 views

Model reference price of Limit order book

first of all, the description of this Stackexchange forum says its for professionals or academics. I'm doing a lot of self studying and with that I was able to understand some white papers but still I'...
1
vote
0answers
35 views

Is it possible to place hidden order inside spread when trading E-mini S&P 500?

My question is not about hidden orders in general. In equity market a trader can post his hidden order inside spread, is it the same way for E-mini S&P 500?
2
votes
2answers
132 views

What are flickering orders?

I am reading a paper for my bachelor thesis, Queuing Uncertainty in Limit Order Market by Bart Zhou Yueshen who is the new AP at INSEAD. In the abstract, the author said: "Flickering orders manifest ...
3
votes
5answers
391 views

Estimate probability of limit order execution over a large time frame

I have a negligible amount of money (\$5000) that I would like to invest in a stock. I would like to buy the stock at some point in the next year, and get the lowest possible price. I would like to ...
1
vote
1answer
75 views

Order flow intensity

I am interested in how to calculate order flow intensity. I got access to high frequency data and can simulate a limit order book. What is the best approach if I want to calculate order flow intensity?...
0
votes
0answers
43 views

Are there good off-the-shelf coding implementation of trade classification algorithms?

Including Lee Ready and bulk classification methods, as well as any other method. To be clear, I'm asking for code, not just a description of the algorithm.
1
vote
0answers
42 views

Avellaneda/Cont model Order Book Model

The model given in the following paper by Avellaneda et al http://people.stern.nyu.edu/jreed/Papers/limitorder.pdf On page 7 he explains that the initial Bid and Ask size should be normalised by ...
4
votes
0answers
121 views

Order Book Dynamics

I have been following this paper: http://arxiv.org/pdf/1104.4596.pdf The model is especially pertinent as I only have access to L1 data. The model is clear and intuitive and I have implemented the ...
0
votes
1answer
89 views

What is the current state of microstructure/order book analysis?

I know it's a broad question, but I'm curious as to the current state of microstructure analysis, specifically whether there's anything 'actionable' that people have discovered. Would also be ...
1
vote
2answers
83 views

Order book size limit

I am trying to find out if exchanges impose limits on the total number of orders which can be in an order book at any one time. Does anyone know of examples of these order book size limit policies. ...
1
vote
1answer
75 views

how are gaps usually handled in market data received with multicast?

Most commonly due to latency reasons, market data is published using multicast protocol. However since multicast is built on top of UDP, it is possible that there could be packet drops. How can the ...
1
vote
0answers
58 views

Are limit orders mostly being matched by market orders?

When going over order book data, most limit-order executions look similar to the following: ...
2
votes
0answers
185 views

More cache friendly linked list or alternative with optimal append, delete, and ordered traversal for limit order book?

I am trying to implement a stock matching engine/order book in C++, and am searching for a more cache friendly architecture. Currently, my data structures are as follows: An intrusive rb-tree for the ...
2
votes
2answers
198 views

Order Execution Algorithms

To execute large orders under minimum price impact or to hide a market view, trading systems sometimes utilize special order execution algorithms or order types. One example is an iceberg order, ...
2
votes
3answers
209 views

Latency and Delays across Exchanges

I have recently come across this paper by Battalio et al. "Can Brokers Have it all? On the Relation between Make Take Fees & Limit Order Execution Quality" and realized how little I know about the ...
4
votes
1answer
105 views

What are “Autoquotes”?

I'm reading a 2008 JoFMarkets paper by Shkilko et al. with title "Locked and crossed markets on NASDAQ and the NYSE" in which the authors investigate the determinants of locked and crossed markets. ...
0
votes
1answer
42 views

Order Book vs Wallet Updates

Good morning, i am in the middle of developing my own stock exchange system and have implemented limit orders (basics) matching. The system is just a DIY solution for my own purposes and for fun ...
2
votes
1answer
153 views

How is the Order priority of an Iceberg order decided?

Typically, markets guarantee a FIFO order of priority of execution for various orders at the same price. I want to know does this hold true for Iceberg orders? for eg Order1 = Buy 100 Quantities @ 2 ...
1
vote
2answers
295 views

How important is the limit order book?

I'm trying to understand how important the limit order today for NYSE, NASDAQ, Euronext and LSE. For example, when we talk about the volume traded during the day, what share of that volume has been ...
2
votes
2answers
266 views

Executions deep in the Limit Order Book?

I have some Level III (message level) data for equities and I have found several cases in which I register the execution of a Limit Order at a price "worse" than the best bid or ask. For example, ...
2
votes
1answer
202 views

Order book Limit Order book

I am trying to make a Limit Order book from an ITCH file using r. what is the basic difference between orderbook and limit orderbook? R has a package for orderbook I think
2
votes
0answers
81 views

Adjusting for your own orders in future backtests

I was asked this question in an interview and despite thinking about it for a while, I haven't been able to come up with a good answer. Suppose you have a strategy you are running where at certain ...
0
votes
1answer
249 views

Level II market data (equities)

I have been playing around with some equities historical market data and I understand that different exchanges have different definitions of what Level II (Limit Order Book) data means. What I'm ...
2
votes
2answers
302 views

Locked or Crossed Markets

I don't understand why Rule 610 from Reg NMS was introduced: what was the problem with locked markets? I have read that one of the issues is that it forced a market maker (say, from Nasdaq) who ...
4
votes
0answers
313 views

Mid-Point calculation with execution probability

Referring Cao, Hansch, and Wang (2004) "The Informational Content of an Open Limit Order Book" $$ \mbox{WP}^{n_1 - n_2} = \frac{\sum_{j=n_1}^{n_2} (Q_j^d P_j^d + Q_j^s P_j^s)}{(Q_j^d + Q_j^s)} $$ ...
1
vote
3answers
412 views

What are the unfair order execution/routing advantages HFT firms apparently have?

I originally thought that you have an orderbook per stock and orders would be filled on the time at which they arrive. Arrive first and you get the best price and the qty in the orderbook is reduced ...
4
votes
3answers
209 views

What is the correct / expected behavior for a market order sent to an empty book?

Should it stick around until liquidity shows up? (GTC) Should it cancel any size for which there is no liquidity? (IOC) Is there such a thing as Market GTC or Market Orders must always be IOC?
7
votes
1answer
403 views

How do you calibrate a poisson arrival rate process?

Many papers in the microstructure literature assume an order arrival rate of the form $\lambda^a(\delta) = \lambda^b(\delta) = Ae^{-k\delta}$ That is, an order that's placed $\delta$ away from the ...
0
votes
1answer
120 views

Change of order size

For example I am put a limit order of size 10 at top bid. moments later, my algorithm detects we should have size of 50 here. So we request a update on this order. My question is, will we lose the ...
0
votes
2answers
240 views

Disclosure of the liquidity provider identity in ITCH

If you look into the description of Nasdaq ITCH data, you see two types of order entries in the book: Message of Type A and F. Under type F, you will see the identity of the market participant (MPID). ...
0
votes
0answers
51 views

Java limitbook implementation? [duplicate]

I am looking to create my own front-end. What is the best data structure/java swing object to represent a limit order book? currently I am using two JTables and loading best bid and qty data from a ...
1
vote
2answers
199 views

Quotes and Transactions Streams from Exchange

I have possibility of taking 2 types of real time streams from some exchange: bid-ask quotes (fresh quotes from order book) transaction log (transactions matched by exchange) I'm curious what ...
4
votes
1answer
3k views

open-source implementation of orderbook from FAST?

I'm looking for c/c++ implementation of OrderBook. I need implementation to reconstruct market data from FAST. I don't need to do "matching" because it already did by exchange, I only need to "...
4
votes
4answers
578 views

Deep bid ask orders

Why do I often see some very deep limit buys and limit sells in a limit book? For instance the bid-ask may be \$39.00-39.01 but I see some bids at \$20 or even \$10 and some ask at \$60 or even \$500. ...
1
vote
1answer
1k views

Question about weighted midpoint formula

The answers from these two replies seem to contradict each other. The first numerator is bidSize*bidPrice + askSize*askPrice but the second is bidSize*askPrice + askSize*bidPrice. Price functions ...
-1
votes
1answer
843 views

What is a resting limit order? [closed]

What exactly is a resting limit order? I could not find a definition on Wikipedia or Google.
2
votes
4answers
528 views

Trader's identity in a limit book

In a limit book like NASDAQ ITCH, can liquidity suppliers know the demand-side identity of a trader prior or after a trade? Knowing this will help me with my theoretical model that I am trying to ...
4
votes
6answers
2k views

FIX- what exactly do repeating groups represent?

I am trying to find out what is the purpose of "repeating groups" in FIX and what exactly do they represent? Are they all related to the same order and if so, why do you need repeated tags? If they ...
-1
votes
1answer
449 views

Order book depth views preferences: order-by-order vs. total aggregated volume by price levels

Which is best? Or is it irrelevant? Hi! Considering Level 2 Data (Market Depth), I want to understand the advantages to have all the order book on an order-by-order basis (or tick-by-tick basis) ...
2
votes
1answer
1k views

What exactly is an ISO order?

I have been looking this up and I feel like I keep running into different definitions. My understanding is that an ISO order is one which will get filled with the displayed quantity in a particular ...
2
votes
1answer
570 views

Does DOM trading using broker data make any sense?

Can I use DOM information from Interactive Brokers? Does it make sense? I assume that it makes sense to apply some volume based algorithms only then when you know this order book, that you can get ...
1
vote
1answer
282 views

PIQ estimation for FIFO limit order book

Assuming that one doesn't have any kind of priveleged data feed (i.e. info is depth of book and volume executed at bid and ask), is it inherently easier to more accurately estimate position in queue ...
1
vote
2answers
1k views

Calculating true value of a stock given the order-book and recent trades

I'm trying to calculate the 'true value' of a stock listed on an exchange. I have access to the limit order-book (containing all bid/ask quotes) and also all trades which have taken place (which ...
2
votes
1answer
113 views

Limits analysis

I have a few time series of models to analyse in terms of how far/close they are to their underlying limit. The limit is a simple value on the y-axis (always positive), and the series can act ...
7
votes
1answer
905 views

Why would a trader quickly flicker an order immediately preceding a tick away?

The Setup Assume the inside market is $15.15 \times 15.16$ and there is a very large bid order imbalance. For example, 30,000 shares bid across 100+ orders, 200 shares offered across 1 order; however,...
3
votes
2answers
281 views

What does ABBO (Away best bid and offer) refer to?

I know what the NBBO is but I've seen mention of ABBO and I'm not sure what it means?
11
votes
4answers
4k views

What is an efficient data structure to model order book?

What is an efficient data structure to model order book of prices and quantities to ensure: constant look up iteration in order of prices retrieving best bid and ask in constant time fast quantity ...
4
votes
1answer
2k views

how do we estimate position of our order in order book?

how would you estimate your order in the exchange order book? The order of order events and acks is not deterministic or guaranteed. How could you write an algo to estimate accurately your position in ...
4
votes
1answer
349 views

What is a good source to learn the different nuances of electronic orders and their nature?

Today I was speaking with someone involved in high frequency trading. They were mentioning hidden orders, queue positions (which can be lost in the orderbook based on certain order modifications), ...