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What would prove it wrong
This reading is retired if WIG-BANKI's underperformance against WIG20 reverses when Bank Millennium reports its final third-quarter FX-mortgage reserve figure, or if EUR/PLN rises by more than 0.5% in a session where EUR/USD is flat or higher, showing the złoty weakening independent of the dollar.
Review condition
Bank Millennium's formal third-quarter results disclosure with the final FX-mortgage reserve estimate, expected to confirm or revise the preliminary estimate flagged on 7 October 2026
Status
Revised · 9 October 2026
How it settled
EUR/USD fell -0.24% (5d) and -3.53% (1mo), indicating dollar strength against the euro, while EUR/PLN rose 0.09%/1.5% over the same windows — meaning the zloty's EUR leg weakened even as the dollar was strong against the euro, contradicting the 'broad dollar strength weakens zloty against both' premise and instead pointing to independent zloty weakness against the euro.

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A dated research thesis and its assessment. This is not portfolio performance or an investment recommendation.

The złoty weakens against both euro and dollar on 8 October 2026… · 8 October 2026 · Thesis ledger