Questions tagged [orderbook]

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4
votes
3answers
98 views

Would it be fair an exchange where priority in the order book is the fee paid per share in the order?

Instead of matching orders in the order book by price then time, what are the consequences if orders are prioritised by price then fee paid per share in the order? An idea similar to the way ...
2
votes
0answers
155 views

How to identify buy walls and sell walls from a limit orderbook?

I am trying to get notified of buy walls and sell walls from a limit orderbook and I had a couple of ideas and would appreciate some insight into these Take the mean quantity and anything above the ...
1
vote
0answers
33 views

How to debit user balance on market buy order?

Suppose that the user's balance is debited before his order is sent to the matching engine. The debiting is done to ensure that the user has sufficient balance and that he is not submitting orders ...
7
votes
1answer
434 views

How do I convert order book data into OHCL( Open,High,Low,close) format?

The image represents the order book data with columns having following attributes: a0: Best ASK price (i.e. the lowest posted price at which someone is willing to sell an asset) b0: Best BID price (...
1
vote
0answers
35 views

Precise calculation of the last price

This might sound like a rather trivial question but how exactly is the last price in a market (let's assume stocks) quoted? "The last transaction" is not really precise. Let's assume there is a ...
0
votes
1answer
76 views

Question about order book and single player interference

Let us suppose I have 1 Million US Dollars, and I am given an ask value of 0.45 USD per share in a given share. Let us call it MRD3. If I place an order of the type bid, in which I offer only 0.01 USD ...
2
votes
0answers
45 views

Are there any exchanges which match orders in timed intervals?

When an exchange works with an electronic order book and a matching engine, it usually tries to match orders in realtime during trading hours. That means when a new order comes in, it tries to match ...
-1
votes
2answers
82 views

Locked/crossed prices in US equities

I'm trying to build a consolidated LOB from several direct feeds. However, there are many instances in which for a given stock, the bid price in one venue equals or crosses the ask price in a ...
3
votes
1answer
114 views

What approaches are there for keeping local and remote order books in sync?

Scenario: developing a custom application which defines a structured workflow for manual order submission to Bloomberg EMSX; it should minimize own persisted state and rely on the remote order book as ...
1
vote
2answers
163 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. ...
4
votes
2answers
2k 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, ...
1
vote
2answers
239 views

TAQ NYSE OpenBook

Where can I get/buy the TAQ NYSE OpenBook for specific stocks on specific days? I don't need a whole year of all stocks. I just want to enter a day and a stock, so I can download the order book data ...
4
votes
3answers
501 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?
3
votes
0answers
799 views

Where do i find the trade execution priority rules for special order types on continous auction markets

I'm looking for documentation on how trade execution is ordered on exchanges with non standard order types. Especially linked/contingent/stop type orders. Any exchange that implements these with ...
2
votes
2answers
285 views

Where do these Orders come from and what do they mean?

Good morning! I was looking at an order book yesterday and saw orders which I haven't seen before. Normally an order in the order book consists of the total volume, the price and how many sellers/...
4
votes
1answer
338 views

Growth of Order Book size during day

I am trying to find market-structure research on how the size / depth of the order book changes during the day for equities. I would expect it to get deeper and deeper and bigger and bigger ...