Suppose you purchased ABC stock 4 month ago and your purchasing price was $40. The ABC stock pric... Suppose you purchased ABC stock 4 month ago and your purchasing price was $40. The ABC stock price went up and down in the past 4 months: $50, $38, $ 42, and $49. Assume risk free rate is 2%.

Monthly Expected Rate of Return? 7.05%

Monthly Standard Deviation? .2153

Sharpe Ratio? .2345

******What is the Downside Risk? (answer is 15.0 just don't know how to get it)

******What is the Sortino Ratio (on the monthly basis)? (.30 is the answer just need to know how to get it)

PLEASE TELL ME HOW TO CALCULATE Downside Risk and Sortino Ratio NOT USING EXCEL. AS I CAN USE THAT ON ANY TEST OR HOMEWORK.