Warsaw Stock Exchange last week: WIG20 suffers worst week of 2026 as oil shock swamps rate-cut hopes
The WIG20 in Poland tumbled 5.17% over March 2-6, landing at 3,262.33 points—its steepest weekly loss of 2026 so far. That drop broke a nine-week stretch in 2026 where the blue-chip index barely budged, never moving more than 1% up or down. This development erased the fleeting optimism from Poland’s recent rate cut. Earlier in the week, the National Bank of Poland trimmed its reference rate by 25 basis points to 3.75%, and the latest March forecasts set 2026 inflation at 2.4% with GDP growth at 2.9%. On the announcement day, the WIG20 surged 2.48%.