US CPI day may fizzle with Veterans Day market closure looming

The market is bracing for late-night volatility from the US CPI report later today, but what happens if a large chunk of participants sit out the follow-up action? That is a scenario to keep in mind heading into tomorrow.

Wednesday is a partial US market holiday marking Veterans Day, and the timing creates an awkward situation with the CPI release scheduled for later today.

The US bond market will shut for the day tomorrow, though the NYSE and Nasdaq will conduct normal trading. Still, do not mistake that for a typical day on Wall Street.

Major banks and big fixed-income desks will be out of commission. So if anything, thinner participation is likely, along with potentially weaker conviction behind any abrupt market moves. That is especially true once traders digest the latest US inflation numbers today.

The situation would be simpler if the inflation data only drove stock movements. However, Treasury yields often sit at the centre of the reaction, and that in turn spills over into the dollar, equities, and broader market sentiment.

Consequently, when the bond market is taken out of the equation tomorrow, one of the biggest drivers of price discovery and a key gauge of market sentiment suddenly goes missing.

So what does this mean for traders exactly?

If the US CPI report today produces a big surprise, the initial reaction could spill over into tomorrow. But without meaningful Treasury market participation, the follow-through may struggle to build much momentum.

There is another twist here, though. Thinner liquidity does not necessarily mean smaller market moves. Such conditions can also amplify price swings, especially if a large order lands when there are not enough buyers or sellers on the other side.

As a result, do not be too surprised if choppy, directionless trading or even sudden moves occur that lack the conviction to hold.

If anything, the more significant test arrives on Thursday, when the bond market returns and traders can properly reassess the inflation story with full participation. So until then, I would be cautious about reading too much into tomorrow's price action, as markets may not be telling the whole story. Sometimes, it simply comes down to having fewer people in the room.