Greek consumer price inflation slowed to 3.5% year-on-year in June, coming in below the 3.8% estimate expected by analysts.
The softer-than-anticipated print has helped ease concerns about further tightening in global monetary policy, with market pricing now assigning only a 17% probability to a US interest rate hike in the near term.
The Athens Stock Exchange held firm on the back of the macroeconomic relief, maintaining support above the 2,500-point level.
Investors appeared to welcome the disinflationary signal, which aligns with broader trends of cooling price pressures across the eurozone.
The market's resilience suggests that traders are interpreting the data as a positive development for liquidity conditions, rather than a sign of economic weakness.
Leading names in the Greek market contributed to the stability, with shares in OTE, Lamda Development, and Hellenic Petroleum (ELPE) posting notable gains.