Plot of daily closing price of 5 asset on same graph

ggplot2

#1

see below codes I used:

n~ Findata$MSFT
n~ Findata$IBM
n~Findata$APPL
n~ Findata$INTL
n~ Findata$FBN
ggplot(data= Findata, aes(x = Date, y = n, color= "darkblue)) +
geom_line()

I need help on how to group the data in one graph, plot the 5 asset's daily closing price on one graph.
Data looks like this below

Dates MSFT APPL INTL FBN
9/01/2018 129 139 130 150
....


#2

Plotting two variables as lines using ggplot2 on the same graph might helps.