On 18 and 21 August this desk argued the euro short, not the currency, was the exposed side of the trade. Leveraged funds kept adding to a book already the most crowded in three years, even as EUR/USD sat at a 20-day high. The falsifier set on 21 August was explicit: the Euro FX net short needed to shrink in the next CFTC report while EUR/USD held at or above 1.1681. The net short did shrink, by 20,724 contracts according to the 25 August report. But EUR/USD did not hold above 1.1681. It is trading at 1.16 so far on 2 September, and its 5-day change reads negative 0.64%. One leg of the falsifier fired; the other did not. That combination does not vindicate the squeeze call. It breaks it: the short-covering the thesis expected to coincide with a firmer euro instead arrived alongside a softer one.
The book itself is no longer the extreme it was two weeks ago. The Euro FX short now sits at the 30.8 mark on the Williams COT index over the past year and at the 13.5th percentile of its three-year range, with a z-score of negative 1.33. That is still a net short, historically unusual in its own right, but less stretched than the book this desk flagged on 18 August. Covering that large, in a single week, ordinarily reads as the crowd starting to concede a trade. Here it reads as the crowd trimming a position whose thesis, a weaker dollar and a firmer euro, was not showing up in the tape.
The rates side offers a mechanical explanation for why the euro gave ground even as its short-side crowd thinned. Fed funds futures price the policy rate at 4.285% in twelve months against an implied front rate of 3.81%, a priced delta of 47.5 basis points higher, not lower: the market is pricing a firmer, no-cuts path for the Fed, not an easing one. The 2-year Treasury yield sits at the 99.6th percentile of its trailing year and the 10-year at the 100th percentile. None of that supports a dollar that needs to weaken on its own policy logic. If the euro short unwound on a shift in relative rate expectations, the rates data does not show that shift. It shows the opposite: a US policy path still being priced firmer.
A short can cover for reasons that have nothing to do with the currency getting stronger, and this week that is exactly what happened.
There is also a correlation wrinkle worth flagging rather than resolving. EUR/USD's 20-session correlation with the US Dollar Index has flipped to positive 0.34, against a prior 60-session correlation of negative 0.35, a level shift the pack's own correlation data confirms. In the ordinary regime, a firmer euro moves opposite a firmer dollar index by construction. A positive 20-day reading means something else has been driving both legs together lately, likely broad risk appetite or a shared reaction to US yields, rather than the euro-dollar mechanics investors default to. A hedge built on the assumption that a dollar rally always means a euro decline, and vice versa, has been getting a noisier signal than usual. That noise is what let a shrinking short coincide with a falling spot rate without the two facts contradicting each other mechanically.
This does not mean the dollar bull case has taken over. The Dollar Index itself is down 0.36% over the past month even as it gained 0.37% over five sessions, sitting closer to the middle of its 20-day range (98.8 to 100.01) than at an extreme. What has changed is narrower and more falsifiable than a regime call: the specific squeeze setup this desk identified on 18 August, a record-crowded short against a euro making 20-day highs, no longer exists. The short has partially unwound and the euro has given up the high it was making when the thesis was filed. The desk's 21 August falsifier is met on its positioning leg and not on its price leg, which under this desk's own reckoning rules counts as the thesis broken, not confirmed. What the desk watches next is whether the covering continues into the next CFTC report while EUR/USD stabilizes below 1.1681. A further shrink in the net short paired with spot holding under that level would confirm the crowd is exiting a losing bet rather than repositioning for a new one, closing the question this note opens rather than reopening it.
