That was the biggest one-week rise in bullish bets since 2011, according to CFTC data.

Speculators hold their biggest net long dollar position since 2015, according to CFTC data released late Friday.

During that period CME opened only 16 EFRP cases when nearly half a million transactions took place, according to CFTC.

Net long euro positions leapt to a new record 144,691 contracts from 127,868, according to CFTC.

The transfer accounted for more than half of customer assets in segregation at the end of January, according to CFTC data.

Since the election, traders have been piling on long positions with the exception of the week before Christmas, according to CFTC data.

Speculators increased bets against the euro to 26,479 contracts in the latest week from 14,093 contracts in the prior week, according to CFTC data.