Swedbank held assets worth 8.541 bn euros at the end of September, accounting for 31.2% of the total banking assets.
SEB Bankas followed in second place with 7.666 bn euros, or 28% of the market.
Luminor, a new bank created through the merger of DNB Bankas and Nordea Bank's Lithuanian branch, ranked third with 6.528 bn euros, or 23.9%.
SEB Bankas' portfolio of loans and advances stood at 6.203 bn euros in late September, giving it a 31.1% market share. Luminor held 26.7% of the market with 5.324 bn euros, followed closely by Swedbank with 26.2 percent and 5.227 bn euros.
Swedbank held the largest deposit portfolio, at 7.595 bn euros, giving it a 36.5% market share. The portfolio included 5.236 bn euros in household deposits, or 42% of the market.
SEB Bankas followed in second place with 5.989 bn euros, or 28.3% of the market. The bank held the biggest portfolio of non-financial companies' deposits, at 1.76 bn euros, or 30.2% of the market.
Luminor held a 19.5% share of the deposit market with 4.054 bn euros.
Six commercial banks and six foreign bank branches operated in Lithuania in late September.