The 15 October note observed that WIG20's rally through 9 October had not been confirmed by WIG-BANKI, and read that gap as evidence the banks were pricing inflation risk more cautiously than the rest of the Warsaw market. The 13 October note then read the WIG-BANKI bounce of 2.13% on 12 October as a sector rebound distinct from Fitch's 2027 deficit forecast of 7.1% of GDP. Both notes flagged the final September CPI reading, due 14 October, as the real test. It has now landed at 4.1%, above the 3.5% upper band the March 2026 NBP projection allows. That is squarely the acceleration scenario the 12 October falsifier warned against. On a strict read, the inflation-risk thesis from 12 October holds: the print moved away from the NBP's own tolerance path, exactly the condition set to overturn it.#
A banking index that falls on the day inflation breaches the central bank's tolerance band is not pricing a near-term hike with any conviction.#
Yet the market reaction runs the other way. WIG-BANKI fell on the day the inflation case for tighter policy strengthened. Its five-session change was just 0.51%, lagging the broader WIG's 1.89% and WIG20's 1.92% over the same window. The reference rate has sat at 3.75% since the 5 March 2026 cut. An inflation print this far above target would, in a conventional transmission, raise the odds the Monetary Policy Council holds longer or reopens the case for a hike, which should lift bank margin expectations and the index with them. Instead banks underperformed the broader market on the very session the print's implications were being digested. That argues equity markets are not treating this overshoot as a trigger for near-term policy action.#
Electricity production rose 7.23% in September, a demand signal that sits uneasily next to an inflation print the wires attribute to fuel prices. The NBP's own March 2026 projection already assumed CPI would run above the 3.5% upper band through end-2026 after the fuel-cap expiry, with a return to the 2.5% point target only in mid-2027. One bank research preview flags the Bank's July projection round as likely to show a higher path through mid-2027 than March assumed. A 4.1% print sits inside that already-elevated path rather than extending beyond it. That may explain why the banks did not reprice harder: the market may be treating this as the overshoot the Bank itself forecast, not a fresh surprise.#
The złoty offers a third read. EUR/PLN is essentially flat so far on 15 October 2026, down 0.02% on the session and 0.19% over five sessions, while USD/PLN has risen 3.71% over the past month on dollar strength rather than domestic repricing. If the inflation print were forcing a genuine shift in the Polish rate path, EUR/PLN would be the instrument most likely to move on it. Its stillness argues the currency market, like the bank index, is not reading 4.1% as a regime-changing number.#
What would change this: a GUS print in the week to 20 October showing wages or industrial output accelerating alongside the CPI overshoot would tighten the case for the Council to act. WIG-BANKI's underperformance since 14 October would then look like mispricing rather than a reasoned read of an already-forecast path. The desk watches the 19 October employment and wages release and the 20 October industrial production print for that confirmation. Absent an acceleration there, the banks' muted reaction stands as the more credible signal than the headline inflation number alone.#
