XTB stayedthe dominant force in Polish account openings in May, adding 48,226 accountswith access to the local market, according to fresh data from Poland's CentralSecurities Depository, known as KDPW. That keptthe Warsaw-listed broker far ahead of every domestic rival, even as its ownmonthly pace eased from the highs it set earlier in the year.The figurepushed XTB's domestic total to 1,087,740 accounts, more than double thesecond-placed firm. But it alsoextended a softer run. XTBbooked 68,300 new accounts in January and just over 51,000 in February,before the monthly count slipped under 50,000 in April, the same month it crossed 1 million Polish accounts for the first time.XTB's Lead Widens Even asGrowth CoolsThe gapbetween XTB and the rest of the field is still getting wider. mBank's brokeragearm, the second-largest player in the KDPW data, finished May with 560,967accounts after adding 5,357 during the month. State-controlledBM Pekao ranked third with 210,079, followed closely by ING Bank Śląski'sbrokerage unit on 205,897.Only mBankcleared four-figure net additions alongside XTB. Dom Maklerski BOŚ added 1,087accounts and BM PKO BP added 858, leaving the chasing pack adding in thehundreds while XTB added in the tens of thousands.mBank isalso working through a leadership change. The bank's brokerage head,Maksymilian Skolik, is leaving at the end of June, with Kamil Figlarek set totake over the director's duties.Source: KDPW, May 2026.A Market on Track for 3Million AccountsAcross thewhole market, Polish brokerages added 59,444 accounts in May, taking the totalto 2,856,520, the KDPW reported. That is 713,711 more than a year earlier, thelargest annual jump on record.The monthlypace has held near 60,000 since February. December and January ran hotter, atroughly 100,000 and 80,000, as Poles rushed to open tax-advantaged IKE and IKZEretirement accounts before the year-end deadline. At thecurrent rate, the market is on course to reach 3 million accounts withinmonths.Thedepository's tally comes with a standing caveat. KDPW counts every account withaccess to the Polish market, not just those holding cash or actually trading. Brokeragesperiodically purge dormant accounts from their registers, which can pull theheadline total lower.Price War Keeps Pressureon the LeaderXTB'shome-market dominance is unfolding against the most crowded competitivebackdrop the country has seen in years. Germanneobroker Trade Republic entered Poland in September 2025, its first market outside theeurozone, and immediately set off a fee fight, with mBank and DM BOŚ scrappingETF commissions on retirement accounts to defend their bases.Incumbentsare also retooling. ING Bank Śląski's brokerage unit has flagged a retirement-account push to challengeXTB, prioritizingIKE and IKZE products and foreign-market access through 2026. Revolut,which sits outside the KDPW count because of its Lithuanian license, is anotherpressure point, with a Polish investing base that rivals XTB's account totals.For itspart, XTB has kept expanding its product range, recentlyrolling out retail options and extending ETF trading hours for Polish clients. Thatproduct drive comes shortly after the KNF, Poland's financial regulator, fined the broker 20 million zlotysover CFD marketing rules, a penalty XTB is contesting.The KDPWdata captures only part of XTB's reach. The broker reports a larger globalclient base in its quarterly filings, while Poland still generates the bulk ofits revenue. After a record first quarter built largelyon its home market,the question for XTB is whether the slower May intake marks a normalpost-milestone cooldown or the early sign of a saturating domestic market.This article was written by Damian Chmiel at www.financemagnates.com.