Executing even moderately large derivatives orders can be expensive and risky; it’s hard to balance the uncertainty of working an order over time versus paying a liquidity premium for immediate execution. Here, we introduce the Time Is Money model, which calculates the Equilibrium Trading Horizon over which to execute an order within the adversarial forces of variance risk and liquidity premium. We construct a hypothetical at-the-money option within Arithmetic Brownian Motion and invert the Bachelier model to compute an inflection point between implied variance and liquidity cost as governed by a central limit order book, each in real time as they evolve. As a result, we demonstrate a novel, continuous-time Arrival Price framework. Further, we argue that traders should be indifferent to choosing between variance risk and liquidity cost, unless they have a predetermined bias or an exogenous position with a convex payoff. We, therefore, introduce half-life factor asymptotics to the model based on a convexity factor and compare results to existing models. We also describe a specialization of the model for trading a basket of correlated instruments, as exemplified by a futures calendar spread. Finally, we establish groundwork for microstructure optimizations as well as explore short term drift and conditional expected slippage within the Equilibrium Horizon framework.
Published in | American Journal of Applied Mathematics (Volume 10, Issue 3) |
DOI | 10.11648/j.ajam.20221003.12 |
Page(s) | 93-99 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2022. Published by Science Publishing Group |
Derivatives, Optimal Execution, Volatility, Arrival Price, Trading
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APA Style
Kevin Darby. (2022). Time Is Money: The Equilibrium Trading Horizon and Optimal Arrival Price. American Journal of Applied Mathematics, 10(3), 93-99. https://doi.org/10.11648/j.ajam.20221003.12
ACS Style
Kevin Darby. Time Is Money: The Equilibrium Trading Horizon and Optimal Arrival Price. Am. J. Appl. Math. 2022, 10(3), 93-99. doi: 10.11648/j.ajam.20221003.12
AMA Style
Kevin Darby. Time Is Money: The Equilibrium Trading Horizon and Optimal Arrival Price. Am J Appl Math. 2022;10(3):93-99. doi: 10.11648/j.ajam.20221003.12
@article{10.11648/j.ajam.20221003.12, author = {Kevin Darby}, title = {Time Is Money: The Equilibrium Trading Horizon and Optimal Arrival Price}, journal = {American Journal of Applied Mathematics}, volume = {10}, number = {3}, pages = {93-99}, doi = {10.11648/j.ajam.20221003.12}, url = {https://doi.org/10.11648/j.ajam.20221003.12}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajam.20221003.12}, abstract = {Executing even moderately large derivatives orders can be expensive and risky; it’s hard to balance the uncertainty of working an order over time versus paying a liquidity premium for immediate execution. Here, we introduce the Time Is Money model, which calculates the Equilibrium Trading Horizon over which to execute an order within the adversarial forces of variance risk and liquidity premium. We construct a hypothetical at-the-money option within Arithmetic Brownian Motion and invert the Bachelier model to compute an inflection point between implied variance and liquidity cost as governed by a central limit order book, each in real time as they evolve. As a result, we demonstrate a novel, continuous-time Arrival Price framework. Further, we argue that traders should be indifferent to choosing between variance risk and liquidity cost, unless they have a predetermined bias or an exogenous position with a convex payoff. We, therefore, introduce half-life factor asymptotics to the model based on a convexity factor and compare results to existing models. We also describe a specialization of the model for trading a basket of correlated instruments, as exemplified by a futures calendar spread. Finally, we establish groundwork for microstructure optimizations as well as explore short term drift and conditional expected slippage within the Equilibrium Horizon framework.}, year = {2022} }
TY - JOUR T1 - Time Is Money: The Equilibrium Trading Horizon and Optimal Arrival Price AU - Kevin Darby Y1 - 2022/05/26 PY - 2022 N1 - https://doi.org/10.11648/j.ajam.20221003.12 DO - 10.11648/j.ajam.20221003.12 T2 - American Journal of Applied Mathematics JF - American Journal of Applied Mathematics JO - American Journal of Applied Mathematics SP - 93 EP - 99 PB - Science Publishing Group SN - 2330-006X UR - https://doi.org/10.11648/j.ajam.20221003.12 AB - Executing even moderately large derivatives orders can be expensive and risky; it’s hard to balance the uncertainty of working an order over time versus paying a liquidity premium for immediate execution. Here, we introduce the Time Is Money model, which calculates the Equilibrium Trading Horizon over which to execute an order within the adversarial forces of variance risk and liquidity premium. We construct a hypothetical at-the-money option within Arithmetic Brownian Motion and invert the Bachelier model to compute an inflection point between implied variance and liquidity cost as governed by a central limit order book, each in real time as they evolve. As a result, we demonstrate a novel, continuous-time Arrival Price framework. Further, we argue that traders should be indifferent to choosing between variance risk and liquidity cost, unless they have a predetermined bias or an exogenous position with a convex payoff. We, therefore, introduce half-life factor asymptotics to the model based on a convexity factor and compare results to existing models. We also describe a specialization of the model for trading a basket of correlated instruments, as exemplified by a futures calendar spread. Finally, we establish groundwork for microstructure optimizations as well as explore short term drift and conditional expected slippage within the Equilibrium Horizon framework. VL - 10 IS - 3 ER -