Tick Size Reduction and the Components of the Bid-Ask Spread on the Taiwan Stock Exchange

Su-Wen Kuo


We examined the effect of reduced tick size on spread and its various components on Taiwan Stock Exchange (TWSE). The TWSE stands for a representative order-driving call mechanism in the emerging market. The noticeable market features of the TWSE render our findings on the effect of tick-size changes useful in combination with those reported in studies on developed markets. Our evidence strongly indicated that the traded spread and the order-processing component declined after tick size was reduced, whereas the asymmetric information component exhibited less significant changes. We documented a relatively high proportion of the order-processing component of the TWSE compared with that observed in developed markets after tick size was reduced. The cross-sectional regression analysis results indicated that stocks with high binding constraints, a high price, and high trading activity generated substantial savings on the order-processing component after tick-size conversion. Our empirical results highlight the important contributions of reduced tick size on market efficiency specifically in an emerging call market setting.

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DOI: https://doi.org/10.5430/ijfr.v8n1p79

This journal is licensed under a Creative Commons Attribution 4.0 License.

International Journal of Financial Research
ISSN 1923-4023(Print)ISSN 1923-4031(Online)


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