On the hidden costs of passive investing

Fuente: arXiv
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Main Author: Tasitsiomi, Iro
Format: Preprint
Published: 2025
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author Tasitsiomi, Iro
author_facet Tasitsiomi, Iro
contents Passive investing has gained immense popularity due to its low fees and the perceived simplicity of focusing on zero tracking error, rather than security selection. However, our analysis shows that the passive (zero tracking error) approach of waiting until the market close on the day of index reconstitution to purchase a stock (that was announced days earlier as an upcoming addition) results in costs amounting to hundreds of basis points compared to strategies that involve gradually acquiring a small portion of the required shares in advance with minimal additional tracking errors. In addition, we show that under all scenarios analyzed, a trader who builds a small inventory post-announcement and provides liquidity at the reconstitution event can consistently earn several hundreds of basis points in profit and often much more, assuming minimal risk.
format Preprint
id arxiv_https___arxiv_org_abs_2506_21775
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the hidden costs of passive investing
Tasitsiomi, Iro
Trading and Market Microstructure
Theoretical Economics
General Finance
Mathematical Finance
Passive investing has gained immense popularity due to its low fees and the perceived simplicity of focusing on zero tracking error, rather than security selection. However, our analysis shows that the passive (zero tracking error) approach of waiting until the market close on the day of index reconstitution to purchase a stock (that was announced days earlier as an upcoming addition) results in costs amounting to hundreds of basis points compared to strategies that involve gradually acquiring a small portion of the required shares in advance with minimal additional tracking errors. In addition, we show that under all scenarios analyzed, a trader who builds a small inventory post-announcement and provides liquidity at the reconstitution event can consistently earn several hundreds of basis points in profit and often much more, assuming minimal risk.
title On the hidden costs of passive investing
topic Trading and Market Microstructure
Theoretical Economics
General Finance
Mathematical Finance
url https://arxiv.org/abs/2506.21775