BNP Paribas Calls Yen Floor as BoJ Tightening Reshapes Carry Trade

USD/JPY has traded in a wide range over the past year, touching multi-decade highs above 160 before pulling back sharply on intervention and BoJ moves. The pair now sits in a zone where both the Ministry of Finance and the BoJ have shown willingness to act. BNP Paribas’s stabilisation call suggests that the downside for the yen is limited from here. The upside is also capped unless the Fed cuts aggressively.

That creates a specific decision point for traders. The carry trade still offers positive roll yield. The risk of a sudden BoJ move makes it a low-reward bet at current levels. Positioning data from the CFTC shows speculative shorts in yen have been trimmed. They remain elevated. If BNP Paribas is correct, those shorts will continue to unwind gradually, not in a panic.

The Next BoJ Decision as the Catalyst

The next BoJ policy meeting will test this thesis directly. If the bank raises rates or signals a faster normalisation path, the yen could strengthen quickly. If it stays on hold and offers no forward guidance, the stabilisation view will take longer to play out. The key data point to watch is Japanese inflation, particularly the services component that the BoJ has flagged as a trigger for further tightening.

BNP Paribas’s call is a reminder that the yen is no longer a one-way short. The BoJ has shifted from outlier to active normaliser. That changes the risk calculus for every major pair involving the yen. For traders building a watchlist, the question is not whether the yen will rally. The question is whether the conditions for a rally are improving faster than the market expects.

For a broader view of how rate differentials are shifting across the G10, see our forex market analysis. Positioning data from the latest weekly COT data can help confirm whether speculative flows are aligning with the stabilisation narrative.