Setting aside trading, purely from a geopolitical gossip perspective, the result of this kind of low-intensity conflict between the US and Iran right now should be the best possible outcome for American interests: the lowest cost and the highest returns.

The logic is simple: if the fighting goes even deeper—especially if it involves U.S. ground forces making advances—the cost would increase exponentially, while returns would have already topped out. If Iran’s highly centralized military government were truly overthrown completely and Iran entered an era of utter chaos, then shipping security in the Strait of Hormuz would, in fact, become completely out of control.
For the US, it now looks more like it’s fighting a marginal attrition war, and even, as a bonus, cleaning out weapon stockpiles so arms dealers can get a few big orders. The US’s military strength is so formidable that even before its air-, sea-, and space-level strategic weapons are brought into play, it has already crippled a major Middle Eastern country.
Plus, since the US is itself an energy exporter, a bit of turmoil in the Middle East doesn’t cost it anything. It can only be said that this situation may not have met Trump’s absolute expectations, but in any case it can hardly be called a failure for the US.
However, oil prices have indeed gone up—that’s the part that affects trading.