广东工业大学学报 ›› 2023, Vol. 40 ›› Issue (05): 123-132.doi: 10.12052/gdutxb.220124
• 综合研究 • 上一篇
莫仕茵, 朱怀念
Mo Shi-yin, Zhu Huai-nian
摘要: 金融市场中存在大量的机构投资者,机构投资者追求高回报高财富的特性导致市场竞争日益激烈,竞争的市场环境使得机构投资者不仅追求自身财富的最大化,还关注与竞争对手之间的财富差距。本文研究多个机构投资者策略互动下的投资与风险控制问题。假设每个投资者均可以将财富投资于金融市场中以实现财富增值,同时通过购买保险等方式将面临的风险部分转移给其他金融机构。使用投资者自身财富与市场平均财富之差描述的相对业绩刻画市场竞争,投资者的目标是最大化终端时刻相对绩效的期望效用,在非零和博弈框架下构建了多人投资与风险控制博弈模型,以CARA效用函数为例,运用随机微分博弈理论和平均场博弈理论求出Nash均衡状态下的最优投资与风险控制策略,并进行参数的敏感性分析。研究发现:竞争将导致风险投资攀升,风险控制减弱,从而导致金融市场的系统性风险增加;机构投资者自身及竞争对手的风险偏好和市场竞争程度均会影响均衡投资与风险控制策略;盈余波动影响风险控制策略发生同向改变,但这种影响在波动轻微时较为明显,当波动超过一定程度时,波动对风险控制策略影响甚微。研究为机构投资者的投资与风险控制策略选择提供了有益指导。
中图分类号:
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