You can add this drop in the stock price of Trump's company to the many barometers showing how poorly he did in the debate. From the outset, this stock has varied alongside his popularity, and clearly, his supporters weren't happy with how he fared. This is bad news politically and monetarily for Trump, who is in the midst of a number of schemes to raise money while facing down debt and legal bills.
If ever we needed evidence that what's good for Harris and the Democrats is bad for our nation, this proves it. After Harris allegedly won the debate, the reality of her economy-killing tax policies — raising taxes on corporate profits, unrealized capital gains, and the incomes of wealthy Americans — settled in and spooked the whole stock market. A Harris presidency will be bad news for the US economy.