賣空機制對股票價格影響的非線性動力學模擬
發(fā)布時間:2019-05-13 18:54
【摘要】:采用非線性適應性演化系統(tǒng)的建模思路,引入信息沖擊變量,構建了考慮賣空機制的股票價格動力學模型,通過數(shù)值模擬的方法,對在市場允許賣空與禁止賣空條件下,股票價格對利好和利空信息沖擊的反應進行了對比分析。結果顯示:在禁止賣空條件下,股票價格對相同程度的利好與利空信息沖擊的反應存在非對稱性,即對利好信息沖擊存在過度反應,對利空信息沖擊不會出現(xiàn)過度反應;但是在市場允許賣空條件下,股票價格對相同程度的利好與利空信息的反應基本是對稱的。研究還發(fā)現(xiàn)在市場允許賣空受利空信息沖擊下,賣空機制并不會加劇股票價格的下滑,形成大的負資產(chǎn)泡沫。
[Abstract]:Based on the modeling idea of nonlinear adaptive evolution system and the introduction of information shock variables, a stock price dynamics model considering short selling mechanism is constructed. by means of numerical simulation, under the condition that short selling is allowed and short selling is prohibited in the market, The response of stock price to good and short information shock is compared and analyzed. The results show that under the condition of banning short selling, there is asymmetry in the response of stock price to the same degree of good and short information shocks, that is to say, there is overreaction to the good information shock, but there will be no overreaction to the short information shock. However, under the condition that the market allows short selling, the response of stock price to the same degree of good and short information is basically symmetrical. The study also found that the short selling mechanism does not aggravate the decline of stock prices and form a large negative asset bubble when the market allows short selling to be hit by short selling information.
【作者單位】: 中南大學商學院;湖南省社會科學院;
【基金】:國家社會科學基金青年項目(11CGL023) 國家自然科學基金創(chuàng)新群體項目(70921001);國家自然科學基金面上項目(70872111)
【分類號】:F224;F832.51
本文編號:2476108
[Abstract]:Based on the modeling idea of nonlinear adaptive evolution system and the introduction of information shock variables, a stock price dynamics model considering short selling mechanism is constructed. by means of numerical simulation, under the condition that short selling is allowed and short selling is prohibited in the market, The response of stock price to good and short information shock is compared and analyzed. The results show that under the condition of banning short selling, there is asymmetry in the response of stock price to the same degree of good and short information shocks, that is to say, there is overreaction to the good information shock, but there will be no overreaction to the short information shock. However, under the condition that the market allows short selling, the response of stock price to the same degree of good and short information is basically symmetrical. The study also found that the short selling mechanism does not aggravate the decline of stock prices and form a large negative asset bubble when the market allows short selling to be hit by short selling information.
【作者單位】: 中南大學商學院;湖南省社會科學院;
【基金】:國家社會科學基金青年項目(11CGL023) 國家自然科學基金創(chuàng)新群體項目(70921001);國家自然科學基金面上項目(70872111)
【分類號】:F224;F832.51
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