Marathon Bancorp, Inc. /MD/ (MBBC) Institutional Ownership

Ownership Summary

The institutional landscape for Marathon Bancorp, Inc. /MD/ (NASDAQ:MBBC) includes 11 filers as of the latest reporting cycle ending September 2025.

• The collective stake of institutional investors in Marathon Bancorp moved to 21.0% in September 2025, a shift down from the 24.7% reported for June 2025.
• Quarterly data indicates a 7.15% shift in institutional share volume, and the annual owner count reflects an increase of 1000.00%.
• Among the 11 institutional holders of Marathon Bancorp, 5 added to their stakes while 3 trimmed their positions and 3 held steady.
• The aggregate institutional position in Marathon Bancorp now stands at 550.13K shares as of September 2025, after investors increased their holdings (up by 36.70K shares quarter on quarter which is up 525.13K shares year over year).
• As of September 30, 2025, MALTESE CAPITAL MANAGEMENT LLC held Marathon Bancorp's largest shareholding position with over 135.10K shares, representing 5.17% of total outstanding shares.
• Among the most significant buyers of Marathon Bancorp during September 2025 were ALLIANCEBERNSTEIN L.P. (42.75K), Minerva Advisors LLC (4.26K), UBS Group AG (967), MALTESE CAPITAL MANAGEMENT LLC (100), BANK OF AMERICA CORP /DE/ (6).
• Leading sellers of Marathon Bancorp stock in September 2025 included VANGUARD GROUP INC (11.07K), Tower Research Capital LLC (TRC) (307), Murchinson Ltd. (6).
• The top 10 institutional holders of Marathon Bancorp for the quarter ending September 2025 included MALTESE CAPITAL MANAGEMENT LLC (135.10K), ALLIANCEBERNSTEIN L.P. (133.23K), RAFFLES ASSOCIATES LP (107.66K), Minerva Advisors LLC (58.98K), VANGUARD GROUP INC (35.40K), KLCM Advisors, Inc. (34.32K), Murchinson Ltd. (22.80K), Stilwell Value LLC (20.00K), UBS Group AG (2.25K), Tower Research Capital LLC (TRC) (367).