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US bond market early closes and their effect on FX

On days before holidays, the US bond market closes early, often at 2 PM New York time. Because interest rate expectations drive much of the dollar's movement, the absence of bond trading removes a major source of information and liquidity.

After the bond close, the dollar may drift on thin volume, with fewer drivers. Price patterns can differ from regular days, with lower volatility interrupted by occasional jumps when flows arrive.

Scalpers watching USD pairs in the afternoon may notice a drop in tick rate and wider spreads. The usual relationships between yields and the dollar stop updating in real time, so signals based on them become less useful.

Add the SIFMA early-close dates to the trading calendar. On those days, plan to stop earlier or use a modified approach.

The change is subtle but real, and costs little to account for. Records from past early-close days can show whether results differ in a way that matters.

Does the system behave differently on bond market early-close days?

I started marking the early-close days on my calendar after getting chopped up on a Friday before a holiday last year. I was trading USDJPY in the New York afternoon, expecting the usual yield-driven trend, and nothing followed through. The bond market had already closed and price just drifted back and forth in a range about half its normal size.

Since then I compared my last dozen early-close days with my normal afternoons. My average winner was a bit smaller, the stop-outs were more frequent, and the spread on USDJPY sat at 1.2 pips for long stretches instead of the usual 0.6. Win rate on those afternoons was clearly lower than on regular days.

My rule now is simple. On early-close days I stop trading at 1 PM New York time and only take the morning session. I also don't force anything in the dead hours after, even if a setup looks fine on the chart. The days I followed that rule were all flat or slightly positive, which beat the old habit.