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 trialanderror Total Posts: 34 Joined: Feb 2019
 Posted: 2019-10-09 19:41 Hello,Since my last post here in the university section, and after discussion with my professor, the aim of my thesis has changed somewhat. I am now looking at the limit order book for 30 stocks and getting descriptive statistics from there. Currently, I am replicating this paper: https://www.jstor.org/stable/2329330?seq=8#metadata_info_tab_contentsHowever, I do not feel like part II. A. where the authors visualize the order book adds much to the analysis. Does anyone have a suggestion on what I could do instead, maybe testing some theory or similar, of the simple averaging visualization that might add more to the paper? Maybe some interesting papers I could read to get some inspiration?Regards,trialanderror Nous promettons selon nos espérances, et nous tenons selon nos craintes.
 nikol Total Posts: 850 Joined: Jun 2005
 Posted: 2019-10-09 21:38 could you share the papers?
 trialanderror Total Posts: 34 Joined: Feb 2019
 Posted: 2019-10-10 06:53 Attached File: LimitOrderBookInvestigation.pdf Nous promettons selon nos espérances, et nous tenons selon nos craintes.
 bullero Total Posts: 57 Joined: Feb 2018
 Posted: 2019-10-10 08:32 https://arxiv.org/pdf/1809.08060.pdf
 ronin Total Posts: 512 Joined: May 2006
 Posted: 2019-10-10 10:59 > I do not feel like part II. A. where the authors visualize the order book adds much to the analysisActually, it does. > a suggestion on what I could do instead, maybe testing some theory or similar, of the simple averaging visualization that might add more to the paper?When all is said and done, the basic questions to do with the order book are:1. Can it predict the future price trajectory2. Can it tell you when an order will be filled3. Can it tell you what the impact will be of filling certain quantity.You can't do much about 3, but either 1 or 2 should be perfectly feasible. And, as an added bous, you will work out what the point of cumulative order book graphs is. "There is a SIX am?" -- Arthur
 nikol Total Posts: 850 Joined: Jun 2005
 Posted: 2019-10-10 15:31 +4 how your predictions will change if you know that the last limit order arrived with size of V and price P.5. and your maximum order size << VIf all above is answered - determine parameter of the order by maximizing PnL distribution (mean and sharpe ratio?)
 trialanderror Total Posts: 34 Joined: Feb 2019
 Posted: 2019-10-12 09:32 @bulleroThanks. I'll have a look at it.@ronin & @nikolThanks to you too. I'll dare to take a stab at the reasoning based on @ronin point 1. and I guess 3. as well. Would the slope of the order book then point to how far an order of a certain size, in general, will be able to push the price up/down, thus predicting price trajectory and at the same time giving the impact of filling a certain quantity? However, I must say that points 1. and 2. feel somewhat connected. If I know the impact of filling a certain quantity, does that not also imply that I know something about the future price trajectory?Also another question. The authors say "(...) the shape of the order book may reflect the correlation in the value of the security to various bidders on the same side of the market and the shading of bids compared to the underlying reservation values. Alternatively, if the slope of the book arises from informational asymmetries, then our findings suggest that the marginal information content of trades is decreasing with trade size.". Knowing that the findings consist of: 1) the bid-ask spread is larger than twice the difference between the adjacent quotes on each side of the book, 2) provision of liquidity at the bid-ask quotes is only a small portion of the overall depth of the order book and 3) the price schedule is steeper at the quotes than away from the quotesWhat does the authors' statement actually mean in light of the findings? Nous promettons selon nos espérances, et nous tenons selon nos craintes.
 ronin Total Posts: 512 Joined: May 2006