文章通过修改GTW模型,从惯性和反转交易策略的角度对我国证券市场上开放式基金与合格境外机构投资者的交易策略选择进行了实证检验,并对实证结果作了动态比较分析。研究发现,这两类机构投资者总体上都采取了惯性交易策略,只是境外投资者的惯性交易策略的程度低于境内投资者。境外机构投资者对稳定市场虽然起到了积极作用,但作用有限。
Applying the modified GTW model, this paper makes an empirical study on the trading strategy choices of domestic open-end funds and qualified foreign institutional investors (QFII) from the perspective of momentum and contrarian strategy and further analyzes the results from a dynamic comparative view. We find that the institutional investors in our security market generally adopt momentum strategy,while the foreign investors' momentum strategy is less obvious than that of domestic investors. Although foreign institutional investors do play a positive role in the stabilization of the market, the positive effect they make is limited.