The Dow rose more than 3% right after the election yesterday, but a day later the Nasdaq fell 5.5%. Is it really because of the election? How should I think about it if I hold a semiconductor ETF?

The cause is not one thing but three layers

The report puts data center regulation worries first, but the same day also brought Qualcomm's weak guidance, reports of Apple cutting its AI budget, and reports of Micron halting construction of its Taiwan plant. It is more accurate to see the regulatory worry as the trigger, with the size of the decline coming from elsewhere.

1. Trigger: not the policy news but already crowded positioning

Many observers expect little change in policy even with Democrats controlling Congress, since much of it runs through executive orders. Yet SMH fell -11.21% and XLK -8.04%. The decline is too large to explain with a single piece of news.

2. Amplifier: mechanical selling by leveraged ETFs

To match index exposure at the end of each day, 3x leveraged semiconductor ETFs (SOXL) sell when the index falls and buy when it rises. On a day of sharp index declines, selling floods in late in the session and deepens the drop. Recent reports estimate rebalancing sales by leveraged products tracking the semiconductor index at around $19 billion. That figure is cited from secondary media and the date may not be this week, so it should be used for direction only (Bloomingbit, 2026-10). The report's note that SOXL's mention ranking jumped from 367th to 7th is circumstantial evidence that money had piled into this product.

3. Yesterday's surge was half of today's decline

On 11-04 the Dow rose +3.27% and the Nasdaq +1.72%. Buying that bet on the resolution of election uncertainty was reversed within a day. The market reading the same election result in opposite ways on consecutive days means no one has conviction either way.

Signals to watch

• If the VIX moves from 27.59 above 30, more selling by volatility-targeting positions could follow. It is still some distance from extremes like March 2020.
• Once leveraged product liquidation ends, mechanical selling stops within a day or two. That is not a bottom, but it is when the pace of decline eases.

If you hold a semiconductor ETF

• A one-day -11% is more a position clean-out than a repricing of an AI capex outlook that a single election would not change. If so, volatility could stay high until Nvidia's earnings on Nov. 17.
• Rather than adding all at once, it is better to approach in stages around the earnings report. In a market like this, 3x products suffer large compounding losses and are unsuitable for short-term rebound trades.

For detailed charts and signals on other stocks, see the /signals dashboard.

Sources: Bloomingbit, Nasdaq