BEL FUSE INC-CL B (BELFB) Stock Institutional Trading Activity


BEL FUSE INC-CL B (BELFB) 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, Polen Capital Management, Oaktree Capital Management, and Third Avenue Management. 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
Q2 2019Renaissance Technologies LLCSell-2,784519,439$8,919
Q1 2019Renaissance Technologies LLCBuy76522,223$13,202
Q4 2018Renaissance Technologies LLCBuy5,647522,147$9,618
Q3 2018Renaissance Technologies LLCBuy17,083516,500$13,687
Q2 2018Oaktree Capital ManagementBuy62,733175,060$3,658
Q1 2018Oaktree Capital ManagementBuy112,327112,327$2,123
Q1 2018Renaissance Technologies LLCBuy22,417499,417$9,439
Q4 2017Renaissance Technologies LLCSell-7,117477,000$12,008
Q3 2017Renaissance Technologies LLCBuy19,700484,117$15,104
Q2 2017Renaissance Technologies LLCSell-15,300464,417$11,471
Q1 2017Renaissance Technologies LLCBuy75,700479,717$12,257
Q4 2016Renaissance Technologies LLCBuy82,317404,017$12,484
Q3 2016Renaissance Technologies LLCBuy57,600321,700$7,766
Q2 2016Renaissance Technologies LLCBuy41,900264,100$4,696
Q1 2016Renaissance Technologies LLCBuy15,100222,200$3,244
Q4 2015Renaissance Technologies LLCBuy17,200207,100$3,581
Q3 2015Renaissance Technologies LLCBuy14,200189,900$3,692
Q2 2015Renaissance Technologies LLCSell-22,517175,700$3,605
Q1 2015Renaissance Technologies LLCSell-383198,217$3,772
Q4 2014Renaissance Technologies LLCSell-6,400198,600$5,430
Q3 2014Renaissance Technologies LLCSell-2,017205,000$5,072
Q2 2014Renaissance Technologies LLCSell-26,000207,017$5,314
Q1 2014Renaissance Technologies LLCBuy5,200233,017$5,103
Q4 2013Renaissance Technologies LLCBuy30,200227,817$4,855
Q3 2013Third Avenue ManagementSell-308,949530,821$9,258
Q3 2013Renaissance Technologies LLCSell-10,170197,617$3,446
Q2 2013Third Avenue ManagementBuy839,770839,770$11,295
Q2 2013Renaissance Technologies LLCBuy207,787207,787$2,795

Frequently asked questions about BELFB activity

  • Which institutional owners are buying BELFB?

    Institutional owners buying BELFB 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 BELFB activity?

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

  • Is institutional interest in BELFB increasing?

    Institutional interest in BELFB 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.