OTTER TAIL CORP (OTTR) Stock Institutional Trading Activity


OTTER TAIL CORP (OTTR) 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, Sequoia Financial Advisors, and Mairs & Power Growth Fund. 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
Q4 2025Renaissance Technologies LLCSell-94,61213,298$1,074,611
Q3 2025Renaissance Technologies LLCBuy68,800107,910$8,845,383
Q2 2025Renaissance Technologies LLCSell-22539,110$3,014,990
Q1 2025Sequoia Financial AdvisorsBuy8,2428,242$662,433
Q4 2024Renaissance Technologies LLCSell-19,97539,335$2,904,496
Q3 2024Renaissance Technologies LLCBuy53,30659,310$4,635,670
Q3 2023Renaissance Technologies LLCSell-19,5006,004$456
Q2 2023Renaissance Technologies LLCSell-45,40025,504$2,014
Q1 2023Renaissance Technologies LLCSell-64,40070,904$5,124
Q1 2023Mairs & Power Growth FundSell-1,0002,800$202,356
Q4 2022Renaissance Technologies LLCSell-94,010135,304$7,944
Q3 2022Renaissance Technologies LLCBuy15,800229,314$14,107
Q2 2022Renaissance Technologies LLCSell-39,300213,514$14,333
Q1 2022Renaissance Technologies LLCBuy59,910252,814$15,801
Q4 2021Renaissance Technologies LLCSell-26,000192,904$13,777
Q3 2021Renaissance Technologies LLCSell-26,110218,904$12,252
Q2 2021Renaissance Technologies LLCSell-68,700245,014$11,959
Q1 2021Renaissance Technologies LLCSell-115,800313,714$14,484
Q4 2020Renaissance Technologies LLCSell-258,128429,514$18,302
Q3 2020Renaissance Technologies LLCSell-41,368687,642$24,872
Q2 2020Renaissance Technologies LLCSell-122,390729,010$28,278
Q1 2020Renaissance Technologies LLCSell-21,500851,400$37,853
Q4 2019Renaissance Technologies LLCSell-44,400872,900$44,771
Q3 2019Renaissance Technologies LLCSell-12,100917,300$49,305
Q2 2019Renaissance Technologies LLCSell-13,600929,400$49,082
Q2 2019Mairs & Power Growth FundSell-3,2083,800$201
Q1 2019Renaissance Technologies LLCSell-11,000943,000$46,980
Q4 2018Renaissance Technologies LLCBuy33,000954,000$47,357
Q3 2018Renaissance Technologies LLCBuy73,490921,000$44,116
Q1 2018Renaissance Technologies LLCBuy154,710847,510$36,740

Frequently asked questions about OTTR activity

  • Which institutional owners are buying OTTR?

    Institutional owners buying OTTR 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 OTTR activity?

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

  • Is institutional interest in OTTR increasing?

    Institutional interest in OTTR 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.