This paper reports evidence on the consequences of differential tax treatment for domestic and foreign owners in a market with a high degree of foreign ownership for certain stocks, the Helsinki Stock Exchange. We find that ex-dividend day ratios vary with the degree of foreign ownership, and detect significantly abnormal ex-dividend day trading volumes. The average ex-dividend price drops for high-yield, high foreign ownership stocks are such that they are likely to lie outside the no-arbitrage boundaries for domestic taxable investors. An investigation of short selling through a derivatives instrument also reveals significant excess trading volumes in ex-dividend months. The tax heterogeneity of the company’s ownership structure seems to play a role in explaining deviations from dividend neutrality, more deviations are observed for companies with a more homogeneous ownership structure in terms of taxation.
|Effective start/end date||01.01.1998 → 31.12.2000|
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