The S&P500 expected return is 18% and 3 Month T-bill rate is 4% currently.

MSFT (Microsoft) has an expected return of 15% and a systematic risk of beta =0.6.

NVDA(Nvidia) has an expected return of 20%

and a systematic risk of beta=1.8.

According to CAPM,

what are the alphas of MSFT and NVDA, respectively?

what are the ratios of reward-per-unit-of-systematic-risk of MSFT and NVDA, respectively?

what would be your arbitrage strategy?

what would be your arbitrage returns?

what would happen to NVDA's price and return after the arbitrage activities?