lsq47 发表于 2021-5-1 18:47 
楼主你好,请问eventstudy2可以使用carhart四因子模型吗?
模型选FM (factor models)自己添加因子应该可以的
help eventstudy2
model(abnormal_return_model) specifies the model to calculate abnormal
returns. In the current version of eventstudy2, the models RAW (raw
returns), COMEAN (constant mean model), MA (market adjusted returns),
FM (factor models, e.g. the market model and Fama and French (1992,
1993) factor models), BHAR (buy-and-hold abnormal returns against a
market index or factor) and BHAR_raw (raw buy-and-hold returns). If
one the models MA, FM or BHAR is selected, it is mandatory to specify
the options marketfile and marketreturns. In models BHAR and BHAR_raw,
missing returns are set to zero (see option fill) while in all other
models missing returns are dealt with on a trade-to-trade basis in
accordance with Maynes and Rumsey (1993, pp. 148-149).
factor1(factor_return1) to factor12(factor_return12), very similar to the
option marketreturns(market_returns), specifies the variable names for
up to 5 factors used in multiple factor benchmark models (FM).
eventstudy2 automatically adjusted test statistics for lower degrees
of freedom when more factors are used in the calculation of abnormal
returns.