Post-election Wall Street party shows a strange split

A post-election celebration is underway on Wall Street, but investors appear unable to settle on a common theme. The Dow follows one rhythm while the Nasdaq marches to a different one. Semiconductor stocks, meanwhile, have apparently opted to stay away from the festivities entirely.

The Dow jumped 3.0% on the day, its biggest gain since April of last year, while the Nasdaq managed a solid 1.4% increase. Semiconductor stocks, however, clearly had other plans, dropping 3.1% even as the wider market celebrated.

Interestingly, this does not appear to be a single-session phenomenon. That gap is continuing into the current trading day, with Dow futures rising 0.5% while Nasdaq futures fall 0.8%. That is a stark difference for a market supposedly enjoying the same post-election relief rally.

What is really happening here?

The Democrats' sweep in the US midterm elections gave investors cause for optimism, especially with hopes that political pressure might push President Trump toward dialling down the US-Iran conflict.

Lower oil prices and falling Treasury yields are supporting the broader market mood. That results in reduced energy costs, easing inflation pressures and potentially cheaper borrowing expenses — all welcome factors for investors in the larger picture.

That said, a different narrative appears to be emerging around the AI trade.

The midterms also highlighted growing political pushback against data centre expansion, raising questions about whether the rapid pace of AI infrastructure investment can be sustained.

On one side, investors may actually welcome greater spending discipline after all the intense scrutiny over whether the billions poured into AI will produce meaningful returns. On the other, slower infrastructure expansion could mean weaker demand growth for semiconductors, threatening the lofty expectations that underpin chip valuations. It is a glass-half-full versus a glass-half-empty outlook.

That brings us to the market divergence seen over the last few sessions.

This may not be about investors losing faith in Wall Street but rather a shift in where they are placing their money. The Dow's strength, alongside weakness in semiconductor stocks, suggests the post-election rally might be taking on a different character.

It could be one where traditional sectors and beneficiaries of lower energy costs gain favour, while the AI trade faces deeper scrutiny. That might sound unusual, but it says a lot about how long the market has been locked into a single-direction AI trade over the past two years.

So the question now is whether we are seeing a temporary reshuffling of market leadership or the start of a more lasting rotation away from AI.

Wall Street is showing it can hold up even without chipmakers leading the way. But if that becomes the new normal, investors may have to rethink what will drive the next leg of this bull market.

Big tech again, anyone? Anyoneee?