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Questions tagged [high-frequency]

For questions dealing with market data sampled at high frequencies, such as tick data and intraday data.

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1answer
573 views

How could HFT help increase liquidity? [duplicate]

I have ready in several websites that HFT can help increase market liquidity, although this is contested in some articles. I am not familiar with the concept of market liquidity. What is the basis of ...
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2answers
876 views

What information do stock exchange colocated servers have access to?

In high frequency and low latency trading, decisions are done on the spot by servers colocated in stock exchanges. This implies that those servers have immediate access to the information they need to ...
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1answer
100 views

How to account for intraday seasonality in GARCH model?

I am using a GARCH(1,1) model to estimate volatility. I am using hourly data to do this (I have hourly data for 100 trading days). Besides removing the first hour (which represents the overnight ...
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1answer
218 views

How to interpret minute by minute ticker data

The data is in the following format: { Time= 650 Volume=700 Last=89.22 High=89.56 Low=89.20 Open=89.25 } I understand that the time value represents the current minute of the day, market ...
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3answers
165 views

Buy side techniques

I was speaking with a friend of mine about what techniques are used for quantitative investment management, and he told me that, when assuming active positions on the market, even in high-frequency ...
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1answer
182 views

Can you explain me these comments on high frequency data?

I was reading some slides on high frequency data and i came across these statements: data discreetness induces high degree of kurtosis and Non synchronous trading and risk premium are sources (...
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2answers
2k views

HFT enhancements for FIX (Simple Binary Encoding) vs proprietary protocols performance and cost

I would like to know from those that have used FIX (with Simple Binary Encoding) for HFT compares with the current (proprietary) protocols in use that often vary per counterparty. Interested in ...
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2answers
250 views

Predicting microstructure momentum in market making

If I have a market maker which is compelled to provide quotes on both sides of the market, I am exposed to risk of quadratic losses (vs my linear gains during normal operations) during times when the ...
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1answer
375 views

Online algorithm for selecting smoothing parameter?

In Online Algorithms in High-frequency Trading the authors demonstrate online, exponentially-weighted algorithms for mean, variance, and linear regression. The authors estimate their smoothing ...
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1answer
132 views

Algo trading execution simulation

Disclaimer: Brand new to high frequency algo trading. Background:I have tick-by-tick trade data for stock A and I have joined the price and volume data for each trade with the previous snapshot of ...
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1answer
472 views

Trade price in high-frequency TAQ data

I am looking at AAPL TAQ high-frequency trade data from NYSE and I have noticed that at several places the trade price (defined in Daily TAQ Client Specification as: "The Trade Price is the monetary ...
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1answer
656 views

Interpreting and scaling of Realized Variance with sample data

I have some question about realized variance(RV) and I have some sample prices below to work with. You can run the R code below to build a vector of log returns. Three are 78 5-minute buckets in a ...
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1answer
77 views

Regression model syntax

I'm following the methodology outlined in Developing High-Frequency Equities Trading Models. On page 27, the author outlines an OLS regression model to obtain beta coefficients. The model is defined ...
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1answer
1k views

Liquidity detection based strategy in HFT

This article contains the following statement. In terms of liquidity detection, traders intend to decipher whether there are large orders existing in a matching engine by sending out small ...
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0answers
54 views

How to weigh computational cost of updating an online predictive model for latency-constrained trading (e.g., market making, HFT)?

Say one has a predictive online model for market making or HFT (or just for anything strictly latency-constrained). In my specific example, I start with a Gaussian distribution over the "true value" ...
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0answers
85 views

Modelling Order Flow

I am trying to model the number of order that come at a distance d from the top of the book on either side, both bid and ask. I was wondering what is a good way to model orders which improve the ...
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0answers
50 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 ...
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0answers
332 views

Calculating realized volatility of high-frequency data

I am wondering how to calculate the realized volatility. Sources such as say that the realized volatility is the sum of squared log returns sampled at a given frequency. So using 30 minute frequency ...
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0answers
90 views

Stock returns: Determining the window size

I am looking for a rigorous way to determine a suitable rolling window size for my stock data. Factors that will influence the window size are how fine my data is (minutely, daily, weekly etc.) and ...
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0answers
73 views

Evaluating passive fills

Assume we look at all passive fills going through a security. How do we benchmark how good each passive fill is (relative to each other)? We expect the edge to be (assuming midprice is our ...
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0answers
74 views

Missing sequence numbers in TAQ Quote data

I am looking at NYSE sample TAQ Quote data for Apple stock (link at the bottom of the post) and I have noticed large discontinuities in the data intervals. For example, these two are two succesive ...
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0answers
88 views

Is Hasbrouck's information share measure a good indicator of whether a price leads others, and are there alternative indicators?

I meant the method in this paper: https://www.jstor.org/stable/2329348
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0answers
133 views

Intraday Volatility using Realized Kernels

Since the papers about realized volatility calculate daily volatility out of intraday data, is it also possible to apply same methods to calculate e.g. 10 minutes volatility by smaller sampled data e....
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0answers
39 views

Toxic FX Flow - how to avoid it [duplicate]

So, basically i want to debate and find out the real reason behind being flag by ECNs and venues as "toxic". How to avoid being flag? What kind of strategies are toxic and why? Below is an article ...
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0answers
93 views

Estimating Daily Dynamics using Hourly Data

This article gives a nice outline of how daily data can be used to estimate cointegration on a monthly horizon. http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1404905 I'd like to use the same ...
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0answers
91 views

labeling high frequency signal data

Was curious if anyone has methodologies they can recommend for systematically labeling (discrete) signals generated from intraday tick data for use in classification or detection models ?
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0answers
238 views

Estimating the next tick movement in Chinese markets

I'm working on high frequency trading in the Chinese Futures market and I've been having a bit of trouble with getting orders to go through due to the lack of liquidity and large fluctuations. To ...
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0answers
362 views

Models for volatility estimation of high frequency data?

I have read on several news articles and research papers, "Contrary to popular belief, high frequency trading reduces volatility in stock markets rather than exacerbates it". Do you know the models ...
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3answers
3k views

Ultra-High Frequency Trading Help

I am putting together an Ultra-High Frequency desk and need to answer the following questions for ordering some rack servers to process about 2 GB of data per second. If anyone has worked at a HFT ...
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2answers
279 views

How to obtain specific information on FX trading systems?

I'm trying to compare trading venues using a quantitative product selection matrix (and eventually software vendors using a different matrix specifically for vendors), and I was wondering if anyone ...
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1answer
971 views

What are trade markouts?

I have experience in trading but mostly in lower frequency quantitative trading. I've moved into HFT research and someone the other day mentioned markouts. I couldn't find anything online explaining ...
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1answer
60 views

Is there any literature on how stock exchanges guarantee consistency?

How do we know that artificial shares of some stock aren't created (perhaps going untracked) on exchanges. After all being man made digital systems they are prone to errors. An example: Suppose a ...
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2answers
251 views

Accessible HTF? (Slippage reduction)

I designed an strategy that operates with 30-second bars on e-mini SP500. It works fine in the back-testing and the out-sample, also performs well in every walk-forward test I have tried. But, when ...
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1answer
97 views

Are proof-of-work systems used by exchanges?

Are there any proof-of-work systems used by exchanges? If not, are there any interesting proposals worth reading? In principle, there might be applications for proof-of-work systems in preventing ...
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1answer
63 views

Why does an exchange (IEX) need connection to other exchanges (like information about average prices)?

I have read "flash boys". The author describes how the Royal Bank of Canada uses THOR and an own SIP against certain practices of flash traders. I understand why a bank or a broker can make beneficial ...
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2answers
76 views

Financial forecasting and Optimal order submission [closed]

For instance, If i have a model that can accurately forecast 3s ahead, would the trading logic be rather trivial? I have fit a series of distributions to L2 data and believe I have a fairly good grasp ...
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2answers
128 views

Data for daily real interest rates

In a high frequency model i would like to add daily real interest rates (preferably short-term) as a variable. However, I cannot seem to find either daily CPI data, or daily real interest rates (...
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1answer
106 views

Find a reasonable h

The mid-price at time $t$ is denoted by $$p_t = \frac{s_t^{a,1} + s_t^{b,1}}{2}.$$ This mid-price can evolve in minimum increments of half a tick but is almost always observed to move at ...
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1answer
269 views

Aggregating Tick Data

I have Level 1 data that has already been aggregated into 0.5s buckets by the exchange. I'd like to further aggregate the data into hourly and daily buckets. I plan to do this by simply taking a ...
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0answers
35 views

Convert Continous Signal to Discrete

Suppose I have a continuous signal for a futures in HFT context. The signal is noisy and continuous. I have tried using moving averages of the signal to make sense of it and to be able to use it, but ...
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0answers
93 views

Trade sizing with market making and the volume of uninformed trades

I have a trend following market maker in a highly volatile market (XBTUSD) which makes its money from uninformed trades over a short time horizon. Sizing my bids/asks has always caused me to question ...
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0answers
41 views

RegNMS, National best bid/offer and Smart Order Routing

I read Flash Boys when it first came out. If memory serves correctly it said US exchanges are required to forward received orders to another exchange if it has better prices, to achieve the best ...
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0answers
112 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.
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0answers
192 views

Is order flow imbalance more or less correlated with price movements at slower frequency?

Suppose I define order flow imbalance as volume(aggress buy)/volume(aggress sell), or some variant of that. Is this variable more, or less, correlated with price movements when I sample less ...
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1answer
2k views

Can end-to-day trading be profitable? If not, why? [closed]

Many academics argue that end-to-day trading, where you go long or short before opening and sell your security at the end of the day, is not profitable. Various explanations are given for this concern....
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1answer
245 views

Calculating intraday returns from imperfect data in R [closed]

The aim is to calculate minute returns in R. Given is minute price data in a tbl_df. A row was only added if there actually were trades. ...
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1answer
526 views

Code for HY Estimator

Does anyone here has a code for HY estimator, preferably in python? I have written a very basic code in python but my results are weird. When I run it for two liquid assets traded on two different ...
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1answer
228 views

Why didn't my order get filled?

So I placed an offer to sell a few liquid options on an already illiquid stock the other day. I put an offer to sell a deep OTM put, the market makers who had their offers in place had, lets say $1, ...
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1answer
116 views

Insoluble Enigma [closed]

I used many statistical tools, i.e. t-SNE, SVM, Neural Network, UMAP, PCA, with the reformatted full market depth data with timestamp each second. UMAP gave me the best data representation, but ...
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1answer
940 views

Tutorial for working with tick data? [closed]

Can you recommend a good tutorial for working with tick data for the purpose of algorithmic trading? Is the data normally stored in a database and only bits are read into memory at a time? Is there ...