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Modelling systemic price cojumps with Hawkes factor models
被引:54
|作者:
Bormetti, Giacomo
[1
,2
]
Calcagnile, Lucio Maria
[1
,2
]
Treccani, Michele
[2
,3
]
Corsi, Fulvio
[1
]
Marmi, Stefano
[1
,2
,4
]
Lillo, Fabrizio
[1
,2
,5
,6
]
机构:
[1] Scuola Normale Super Pisa, I-56126 Pisa, Italy
[2] QUANTLab, I-56122 Pisa, Italy
[3] LIST SpA, I-56122 Pisa, Italy
[4] CNRS, UMI 3483, Lab Fibonacci, I-56126 Pisa, Italy
[5] Univ Palermo, Dipartimento Chim & Fis, I-90128 Palermo, Italy
[6] Santa Fe Inst, Santa Fe, NM 87501 USA
关键词:
C32;
C5;
G01;
G10;
C51;
Systemic shocks;
Hawkes processes;
Cojumps;
High frequency data;
CONTINUOUS-TIME;
HIGH-FREQUENCY;
STOCK-PRICES;
JUMPS;
VOLATILITY;
RISK;
SIMULATION;
DIFFUSION;
POISSON;
TAILS;
D O I:
10.1080/14697688.2014.996586
中图分类号:
F8 [财政、金融];
学科分类号:
0202 ;
摘要:
Instabilities in the price dynamics of a large number of financial assets are a clear sign of systemic events. By investigating portfolios of highly liquid stocks, we find that there are a large number of high-frequency cojumps. We show that the dynamics of these jumps is described neither by a multivariate Poisson nor by a multivariate Hawkes model. We introduce a Hawkes one-factor model which is able to capture simultaneously the time clustering of jumps and the high synchronization of jumps across assets.
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页码:1137 / 1156
页数:20
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