MBIA INC (MBI) Stock Institutional Trading Activity


MBIA INC (MBI) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Kahn Brothers Group, Chou Associates Management, Miller Value Partners, and Fairfax Financial Holdings. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2022Renaissance Technologies LLCSell-46,70093,874$1,445
Q4 2021Kahn Brothers GroupBuy11,0674,978,900$78,616,832
Q4 2021Renaissance Technologies LLCBuy43,400140,574$2,220
Q3 2021Kahn Brothers GroupSell-75,4964,967,833$63,836,654
Q3 2021Renaissance Technologies LLCSell-2,50097,174$1,249
Q2 2021Kahn Brothers GroupBuy148,5635,043,329$55,476,619
Q2 2021Renaissance Technologies LLCSell-27,80099,674$1,096
Q2 2021Chou Associates ManagementSell-53,001599,530$6,595
Q1 2021Kahn Brothers GroupSell-13,0254,894,766$47,087,649
Q1 2021Renaissance Technologies LLCSell-72,694127,474$1,226
Q1 2021Chou Associates ManagementBuy33,001652,531$4,659
Q4 2020Kahn Brothers GroupBuy259,5174,907,791$32,293,264
Q4 2020Renaissance Technologies LLCSell-58,724200,168$1,317
Q4 2020Chou Associates ManagementSell-33,001619,530$4,077
Q3 2020Kahn Brothers GroupSell-334,4774,648,274$28,168,540
Q3 2020Renaissance Technologies LLCSell-88,600258,892$1,569
Q2 2020Kahn Brothers GroupSell-129,3004,982,751$36,124,945
Q2 2020Renaissance Technologies LLCSell-438,300347,492$2,519
Q1 2020Kahn Brothers GroupSell-289,7885,112,051$36,500,044
Q1 2020Renaissance Technologies LLCBuy128,800785,792$5,611
Q4 2019Kahn Brothers GroupSell-177,5825,401,839$50,237,103
Q4 2019Renaissance Technologies LLCBuy428,618656,992$6,110
Q3 2019Kahn Brothers GroupSell-35,3155,579,421$51,498,056
Q3 2019Renaissance Technologies LLCSell-301,126228,374$2,108
Q3 2019Chou Associates ManagementSell-300,000652,531$6,023
Q2 2019Kahn Brothers GroupBuy1,202,2545,614,736$52,273,192
Q1 2019Kahn Brothers GroupSell-119,4284,412,482$42,006,829
Q4 2018Kahn Brothers GroupSell-19,7004,531,910$40,424,637
Q4 2018Chou Associates ManagementSell-5,566952,531$8,497
Q3 2018Kahn Brothers GroupSell-62,4504,551,610$48,656,711

Frequently asked questions about MBI activity

  • Which institutional owners are buying MBI?

    Institutional owners buying MBI include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MBI activity?

    "Buy" means an investor increased their reported position in MBI compared to the prior reporting period. This reflects growing exposure to MBIA INC (MBI) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MBI increasing?

    Institutional interest in MBI can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.