The small-capitalization Russell 2000 Index is up 10% in the past five sessions.
History shows that even a nail-bitingly close contest will not necessarily be bad for equities.
Traders are already preparing for the risk of stock-market swings around the November vote
Elon Musk's company is the second-worst performer in the S&P 500.
The legacy firms, shunned in recent years, are now viewed as offering a valuation discount.
After doubling last year, Tesla's stock price is down 22% to start 2024.
Tesla stock has been in a freefall over the past three months.
The latest selloff will cost Tesla its position among the 10 highest-valued companies in the S&P 500.
S&P Dow Jones said Tesla has fallen behind index peers. Elon Musk called ESG a "scam."
As indexes include more stocks like Tesla, will passive investors have to cope with higher volatility?