Question: what is the best stock to invest in for my 401k?
Answer: Best investments to add to your 401(k). ... 
Vanguard Total Stock Market Index (ticker: VTSAX) ... 
Vanguard Small Cap Index Admiral (VSMAX) ... 
Fidelity Advisor Technology Fund (FADTX) ... 
Fidelity Advisor Growth Opportunities (FAGAX) ... 
Vanguard Developed Markets Index Admiral (VTMGX) ... 
Fidelity International Index (FSPSX)