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杭州师范大学研究生学位论文独创性声明
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签字日期:2022年 12月 13日
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杭州师范大学硕士学位论文
摘要
摘要
期权是金融市场重要的金融衍生品,具有高杠杆性、高风险性和高收益性等
特征,能够被广泛应用于风险管理,也是市场主体参与套利交易的工具。作为我
国首个基于宽基指数的股指期权,沪深 300股指期权于 2019年 12月 23日正式
在中国金融交易所上市,并经受了新冠疫情和俄乌冲突等一系列引发国内外股票
市场大幅波动等事件的考验。在上市之后的两年多时间里,沪深 300股指期权一
直运行平稳,交易活跃,其经济功能已初步发挥作用,已经成为投资者进行风险
管理和投资交易的金融产品。然而由于股指期权在我国金融市场上市时间较晚,
因此目前学术界关于国内股指期权的研究偏少,尤其是关于股指期权波动率建模
和期权定价,以及如何应用股指期权进行套利的研究更少,导致学术研究成果无
法满足投资者在参与股指期权套利和风险管理等现实活动而产生的指导需求。
本文基于波动率的视角,在介绍股指期权波动率的常用建模模型和股指期权
套利主要策略的基础上,选用沪深 300股指期权等金融市场上的实际运行数据,
通过应用 GARCH模型、Realized GARCH模型和 SABR模型对沪深 300股指期
权波动率进行建模测算,优选出符合我国沪深 300股指期权的波动率模型,进而
构建针对沪深 300股指期权的套利策略并进行策略应用效果的检验。
在波动率模型选择方面,本文应用沪深 300股指期权的交易数据,先估计
GARCH模型、Realized GARCH模型和 SABR模型参数,然后利用波动率模型
估算沪深 300股指期权的隐含波动率,并进行模型定价误差比较,发现 SABR
模型的拟合效果最好,尤其对于短期的期权波动率表现更加稳健。
在构建针对沪深 300股指期权的套利策略方面,本文基于拟合效果最为适合
的 SABR模型构建期权波动率套利策略,发现模型所预测的隐含波动率与 20天
历史波动率均值存在一定差异时,存在期权隐历差的套利机会。进一步结合跨式
套利策略,对交易信号触发阈值、交易频率和滑点价格影响的回测,回测结果表
明,当策略频率为 5分钟,并且买入跨式期权开仓的历史分位数区间为[0,20%],
卖出跨式期权开仓的历史分位数区间为[80%,100%],此时策略的整体收益最为稳
定,累计盈利和年化盈利都有较好表现,并且回撤最小。在样本外数据验证中,
沪深 300指数处于震荡下行阶段,发现该策略整体表现仍较为稳定。
关键词:沪深 300股指期权;期权波动率;波动率模型;套利策略
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杭州师范大学硕士学位论文
Abstract
Abstract
Option plays a significant role in the financial market, which is high leverage,
high risk and high return coexist, it also can be widely used in risk management. It is
also an instrument for market participants to participate in arbitrage transactions. As
China's first stock index option based on the broad-based index, the CSI 300 stock
index option was officially listed on the China Financial Exchange on December 23,
2019, and has withstood a series of incidents such as the COVID-19 and the conflict
between Russia and Ukraine, which triggered large fluctuations in the domestic and
foreign stock markets. In more than two years after listing, CSI 300 stock index
options have been running smoothly and trading actively. Their economic functions
have initially played a role, and they have become financial derivatives for investors
to conduct risk management and investment transactions. However, due to the late
launch of the stock index option in China's financial market, which is an emerging
financial derivative instrument, the current academic research on China's stock index
option is less, especially on how to price the stock index option and how to use the
stock index option for arbitrage. As a result, the academic research results cannot
meet the needs of practitioners in participating in stock index option trading guidance
needs arising from practical activities such as arbitrage and risk management.
Based on the perspective of volatility, this paper introduces the common models
of stock index option volatility and the main strategies of stock index option arbitrage,
selects the actual operating data in financial markets such as CSI 300 stock index
options, and uses GARCH model, Realized GARCH model and SABR model to
model and calculate the volatility of CSI 300 stock index options, and selects the
volatility model that conforms to China's CSI 300 stock index options, Then build
arbitrage strategy for CSI 300 stock index options and test the effect of strategy
application. In terms of the selection of volatility model, this paper applies the trading
data of CSI 300 stock index options, first estimates the parameters of GARCH model,
Realized GARCH model and SABR model, and then estimates the implied volatility
of CSI 300 stock index options using the volatility model, and compares the model
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