## Load Packages
library(tidyverse)
library(tidyquant)
Get Stock prices and Convert to Return
Ra <- c("MSFT", "HD", "UPS") %>%
tq_get(get = "stock.prices",
from = "2022-01-01") %>%
group_by(symbol) %>%
tq_transmute(select = adjusted,
mutate_fun = periodReturn,
period = "monthly",
col_rename = "Ra")
Ra
## # A tibble: 45 × 3
## # Groups: symbol [3]
## symbol date Ra
## <chr> <date> <dbl>
## 1 MSFT 2022-01-31 -0.0710
## 2 MSFT 2022-02-28 -0.0372
## 3 MSFT 2022-03-31 0.0319
## 4 MSFT 2022-04-29 -0.0999
## 5 MSFT 2022-05-31 -0.0181
## 6 MSFT 2022-06-30 -0.0553
## 7 MSFT 2022-07-29 0.0931
## 8 MSFT 2022-08-31 -0.0667
## 9 MSFT 2022-09-30 -0.109
## 10 MSFT 2022-10-31 -0.00331
## # … with 35 more rows
Get Baseline and Convert to Return
Rb <- "^IXIC" %>%
tq_get(get = "stock.prices",
from = "2022-01-01") %>%
tq_transmute(select = adjusted,
mutate_fun = periodReturn,
period = "monthly",
col_rename = "Rb")
Rb
## # A tibble: 15 × 2
## date Rb
## <date> <dbl>
## 1 2022-01-31 -0.101
## 2 2022-02-28 -0.0343
## 3 2022-03-31 0.0341
## 4 2022-04-29 -0.133
## 5 2022-05-31 -0.0205
## 6 2022-06-30 -0.0871
## 7 2022-07-29 0.123
## 8 2022-08-31 -0.0464
## 9 2022-09-30 -0.105
## 10 2022-10-31 0.0390
## 11 2022-11-30 0.0437
## 12 2022-12-30 -0.0873
## 13 2023-01-31 0.107
## 14 2023-02-28 -0.0111
## 15 2023-03-08 0.0105
Join the Two Data Tables
RaRb <- left_join(Ra, Rb, by = c("date" = "date"))
RaRb
## # A tibble: 45 × 4
## # Groups: symbol [3]
## symbol date Ra Rb
## <chr> <date> <dbl> <dbl>
## 1 MSFT 2022-01-31 -0.0710 -0.101
## 2 MSFT 2022-02-28 -0.0372 -0.0343
## 3 MSFT 2022-03-31 0.0319 0.0341
## 4 MSFT 2022-04-29 -0.0999 -0.133
## 5 MSFT 2022-05-31 -0.0181 -0.0205
## 6 MSFT 2022-06-30 -0.0553 -0.0871
## 7 MSFT 2022-07-29 0.0931 0.123
## 8 MSFT 2022-08-31 -0.0667 -0.0464
## 9 MSFT 2022-09-30 -0.109 -0.105
## 10 MSFT 2022-10-31 -0.00331 0.0390
## # … with 35 more rows
Calculate CAPM
RaRb_capm <- RaRb %>%
tq_performance(Ra = Ra,
Rb = Rb,
performance_fun = table.CAPM)
RaRb_capm
## # A tibble: 3 × 13
## # Groups: symbol [3]
## symbol ActiveP…¹ Alpha Annua…² Beta `Beta-` `Beta+` Corre…³ Corre…⁴ Infor…⁵
## <chr> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 MSFT 0.0303 -0.0023 -0.0272 0.747 0.780 0.428 0.903 0 0.258
## 2 HD 0.0046 -0.0078 -0.0898 0.557 -0.264 0.599 0.604 0.0171 0.02
## 3 UPS 0.140 0.0116 0.149 0.855 1.51 0.338 0.794 0.0004 0.779
## # … with 3 more variables: `R-squared` <dbl>, TrackingError <dbl>,
## # TreynorRatio <dbl>, and abbreviated variable names ¹ActivePremium,
## # ²AnnualizedAlpha, ³Correlation, ⁴`Correlationp-value`, ⁵InformationRatio
Whick Stock has a positive skewed distrubution of returns
RaRb_capm <- RaRb %>%
tq_performance(Ra = Ra,
Rb = Rb,
performance_fun = VolatilitySkewness)
RaRb_capm
## # A tibble: 3 × 2
## # Groups: symbol [3]
## symbol VolatilitySkewness.1
## <chr> <dbl>
## 1 MSFT 1.19
## 2 HD 1.00
## 3 UPS 1.72