Data-driven tree structure for PIN models

Abstract

Probability of informed trading (PIN) models characterize trading with certain types of information through a tree structure. Different tree structures with different numbers of groups for market participants have been proposed, with no clear, consistent tree used in the literature. One of the main causes of this inconsistency is that these trees are artificially proposed through a bottom-up approach rather than implied by actual market data. Therefore, in this paper, we propose a method that infers a tree structure directly from empirical data. More precisely, we use hierarchical clustering to construct a tree for each individual firm and then infer an aggregate tree through a voting mechanism. We test this method on US data from January 2002 for 7608 companies, which results in a tree with two layers and four groups. The characteristics of the resulting aggregate tree are between those of several proposed tree structures in the literature, demonstrating that these proposed trees all reflect only part of the market, and one should consider the proposed empirically driven method when seeking a tree representing the whole market.

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Availability of data and material

The data is collected from TAQ database.

Code availability

The code for this study is written using R.

Notes

  1. 1.

    Note that when employing the BIC, one assumes that all data are from the same model with the same parameters, namely, independent and identical samples. This is not the case with heterogeneous data.

  2. 2.

    This idea comes from Chen et al. (2016). In their case, their experiment gives them different estimations of the number of states, so they use a majority vote (they use this term in their conference presentation) to select an estimation. Here we borrow this idea, but vote on the structure of trees.

  3. 3.

    More precisely, the data here are time series data collected through an experimental technique called Föster resonance energy transfer (FRET). See Chen et al. (2016) for more details.

  4. 4.

    Two general approaches (commonly known as tick tests) are used to infer the direction of a trade: (1) comparing the trade price to the bid/ask prices of the prevailing quote or (2) comparing the trade price to that of adjacent trades.

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Funding

The research of Chu-Lan Michael Kao is partly supported by MOST 107–2118-M-009–003-MY2.

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Correspondence to Chu-Lan Michael Kao.

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Lin, E., Kao, CL.M. & Adityarini, N.S. Data-driven tree structure for PIN models. Rev Quant Finan Acc (2021). https://doi.org/10.1007/s11156-021-00961-w

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Keywords

  • PIN model
  • Hierarchical clustering
  • Tree voting
  • Data-driven method

JEL Classification

  • G14