BUDAPEST, Dec 22 (Reuters) - The Czech crown firmed to a six-week high on Wednesday after the central bank surprised markets with a larger-than-expected 100-basis-point interest rate hike to fight soaring inflation. The crown was up 0.37% on the day and trading at 25.152 per euro, up from 25.225 before the announcement the key two-week repo rate (CZCBIR=ECI) would be raised to 3.75%, the highest since February 2008. A Reuters poll of analysts predicted a 75-basis-point hike. "The CNB"s larger hike suggests it does not want to see koruna weaker amid rising inflationary risks. We think another front-loading (if it is a front-loading also from the staff perspective) could keep our forecast of CNB"s terminal policy rate level at 4.25% in Q1-2022," Citi"s Jaromir Sindel wrote. Central European policymakers have been raising interest rates to contain inflation, which has surged to multi-year highs. The Czechs have been one of the most aggressive. The Hungarian forint weakened 0.46% and was trading at 369.10 per euro, about a percent off its record low of 372 that it hit in November. One factor weighing on the currency was Prime Minister Viktor Orban"s announcement that retail mortgage rates would be frozen at end-Octover levels, an FX trader in Budapest said. read more Hungarian bank OTP"s shares fell to five-month lows after the announcement. The bank"s shares were down over 7% by 1436 GMT. Budapest"s stocks (.BUX) weakened 2.79%, dragged down by the fall in OTP. Elsewhere, the Polish zloty weakened 0.18% to 4.6285 per euro. Higher tariffs and energy prices, higher inflation and thus higher rates "should support further zloty appreciation from the new year, when normal trade returns," ING BSK wrote in a note. Stock markets in the region were mixed, with Warsaw (.WIG20) adding 0.58%. Prague (.PX) was 0.5% higher while Bucharest (.BETI) added 0.81%. CEE MARKETS SNAPSHOT AT 1542 CET CURRENCIES Latest Previous Daily Change bid close change in 2021 EURCZK= Czech crown 25.1520 25.2450 +0.37% +4.28% EURHUF= Hungary forint 369.1000 367.4000 -0.46% -1.73% EURPLN= Polish zloty 4.6285 4.6200 -0.18% -1.50% EURRON= Romanian leu 4.9500 4.9500 +0.00% -1.72% EURHRK= Croatian kuna 7.5190 7.5215 +0.03% +0.38% EURRSD= Serbian dinar 117.5300 117.6050 +0.06% +0.03% Note: daily change calculated from 1800 CET Latest Previous Daily Change close change in 2021 .PX Prague (.PX) 1419.26 1412.1600 +0.50% +38.18% .BUX Budapest (.BUX) 49157.97 50571.05 -2.79% +16.74% .WIG20 Warsaw (.WIG20) 2198.11 2185.47 +0.58% +10.79% .BETI Bucharest (.BETI) 12449.50 12349.32 +0.81% +26.96% .SBITOP Ljubljana (.SBITOP) 1234.75 1234.23 +0.04% +37.06% .CRBEX Zagreb (.CRBEX) 2043.01 2035.40 +0.37% +17.46% .BELEX15 Belgrade (.BELEX15) 829.54 828.43 +0.13% +10.81% .SOFIX Sofia (.SOFIX) 631.37 635.57 -0.66% +41.08% Yield Yield Spread Daily (bid) change vs Bund change in Czech Republic spread CZ2YT=RR 2-year 3.5360 0.0190 +422bps +1bps CZ5YT=RR 5-year 3.1840 0.0490 +372bps +2bps CZ10YT=RR 10-year 2.8470 0.0180 +313bps +0bps Poland PL2YT=RR 2-year 3.1840 0.0140 +387bps +1bps PL5YT=RR 5-year 3.7620 0.0150 +430bps -1bps PL10YT=RR 10-year 3.5120 0.0480 +380bps +3bps FORWARD 3x6 6x9 9x12 3M interbank Czech Rep 4.46 4.13 3.99 3.46 Hungary 5.03 5.12 5.10 3.94 Poland 3.57 3.84 3.81 2.40 Note: FRA quotes are for ask prices ************************************************************** Additional reporting by Pawel Florkiewicz in Warsaw and Robert Muller in Prague; Editing by Shounak Dasgupta and Krishna Chandra Eluri