The dollar strengthened for a second consecutive day, edging closer to its late-March peak levels as market participants ramped up wagers on an imminent Federal Reserve rate hike. Currency traders are positioning for what could be the first tightening cycle in years, with positioning data showing increased bearish bets on the greenback's recent weakness.

Market pricing now reflects growing conviction that the Fed will begin raising interest rates as early as late next month, ending months of aggressive monetary accommodation. This shift in sentiment comes after policymakers signaled a more hawkish stance during recent communications, suggesting that inflation concerns may outweigh growth risks in the central bank's calculus.

The dollar's advance puts pressure on multinational companies with overseas earnings, as stronger currency makes their foreign profits worth less when converted back to U.S. dollars. Commodity prices typically face downward pressure in this environment, while emerging market currencies with dollar-denominated debt could weaken further.

Investors are watching Fed officials' upcoming speeches for confirmation of the timeline shift. The rally suggests markets are pricing in roughly 75 basis points of tightening by year-end, which would mark a dramatic pivot from the accommodative policies that fueled the post-pandemic recovery.