Indexes of SP500 without Boeing should outperform ones including Boeing, if you’re predicting that Boeing will underperform in 25 years. You don’t have to short

Indexes of SP500 without Boeing should outperform ones including Boeing, if you’re predicting that Boeing will underperform in 25 years. You don’t have to short; you can use the knowledge to tune your retirement holdings. You could even weight the index ratios by how self-cannibalizing you believe each company will be. Requires a broker that does fractional shares or a lot of money, though.