one way:
lst <- list(a = c(1,2,3), b = c(4,5,6), c = c(7,8,9))
do.call(rbind,lst)

second way:
m <- matrix(unlist(lst),byrow=TRUE,ncol=length(lst[[1]]))
rownames(m) <- names(lst)
as.data.frame(m)

another way:
for (i in ic) value[[i]] <- as.vector(x[, i])

  myda<-large_list%>%
            purrr::map(~as_tibble(.x))%>% dplyr::bind_rows()  ## myda 即是你的large list

你是数据是xts类的，你需要的是timetk包：
dplyr::bind_rows(lapply(large_list, timetk::tk_tbl))