US
Let’s plot a graph of some Exchange-traded funds (ETFs) available in the US market that follows the SP 500 index. As you can see, the adherence is amazing.
library (yfR)
library (ggplot2)
library (ggthemes)
stocks <- c ('SPY' , 'IVV' ,'VOO' , 'SPLG' , '^GSPC' )
start <- '2010-01-01'
end <- Sys.Date ()
data <- yf_get (tickers = stocks,
first_date = start,
last_date = end)
data<- data[complete.cases (data),]
stock1 <- subset (data, ticker == stocks[1 ])
stock2 <- subset (data, ticker == stocks[2 ])
stock3 <- subset (data, ticker == stocks[3 ])
stock4 <- subset (data, ticker == stocks[4 ])
stock5 <- subset (data, ticker == stocks[5 ])
stock1$ price_close2 <- stock1$ price_close / stock1$ price_close[1 ] * 100
stock2$ price_close2 <- stock2$ price_close / stock2$ price_close[1 ] * 100
stock3$ price_close2 <- stock3$ price_close / stock3$ price_close[1 ] * 100
stock4$ price_close2 <- stock4$ price_close / stock4$ price_close[1 ] * 100
stock5$ price_close2 <- stock5$ price_close / stock5$ price_close[1 ] * 100
data2 <- rbind (stock1, stock2, stock3, stock4, stock5)
ggplot (data2, aes (ref_date , price_close2, color= ticker))+
geom_line () +
labs (x = "" ,
y= 'Closing prices' ,
title= "SP500 against 4 ETFs, Initial price = 100" ,
subtitle = "Begin 01/01/2010" ) + theme_solarized ()
Brazil
Here is the same graph for brazilian ETF Bova11. The adherence seems ok.
library (yfR)
library (ggplot2)
library (ggthemes)
stocks <- c ('BOVA11.SA' , '^BVSP' )
start <- '2010-01-01'
end <- Sys.Date ()
data <- yf_get (tickers = stocks,
first_date = start,
last_date = end)
data<- data[complete.cases (data),]
stock1 <- subset (data, ticker == stocks[1 ])
stock2 <- subset (data, ticker == stocks[2 ])
stock1$ price_close2 <- stock1$ price_close / stock1$ price_close[1 ] * 100
stock2$ price_close2 <- stock2$ price_close / stock2$ price_close[1 ] * 100
data2 <- rbind (stock1, stock2)
ggplot (data2, aes (ref_date , price_close2, color= ticker))+
geom_line () +
labs (x = "" ,
y= 'Closing prices' ,
title= "Ibov against 2 ETFs, Initial price = 100" ,
subtitle = "Begin 01/01/2010" ) + theme_solarized ()