HYLIION HOLDINGS CORP (HYLN) Stock Institutional Trading Activity


HYLIION HOLDINGS CORP (HYLN) 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 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-145,200214,100$393,944
Q3 2025Renaissance Technologies LLCSell-955,799359,300$707,821
Q2 2025Renaissance Technologies LLCSell-818,2391,315,099$1,735,931
Q1 2025Renaissance Technologies LLCBuy842,7722,133,338$2,986,673
Q4 2024Renaissance Technologies LLCBuy424,8661,290,566$3,368,377
Q3 2024Renaissance Technologies LLCSell-125,200865,700$2,146,936
Q2 2024Renaissance Technologies LLCSell-84,000990,900$1,605,258
Q1 2024Renaissance Technologies LLCSell-96,4001,074,900$1,892
Q4 2023Renaissance Technologies LLCSell-57,8001,171,300$953
Q3 2023Renaissance Technologies LLCSell-767,7001,229,100$1,450
Q2 2023Renaissance Technologies LLCSell-664,3001,996,800$3,335
Q1 2023Renaissance Technologies LLCBuy768,3002,661,100$5,269
Q4 2022Renaissance Technologies LLCBuy30,7471,892,800$4,429
Q4 2022Mairs & Power Growth FundSell-34,420138,347$323,732
Q3 2022Renaissance Technologies LLCBuy256,2531,862,053$5,344
Q2 2022Renaissance Technologies LLCSell-1,326,4001,605,800$5,171
Q1 2022Renaissance Technologies LLCBuy2,481,2762,932,200$12,990
Q4 2021Mairs & Power Growth FundBuy24,400172,767$1,071
Q4 2021Renaissance Technologies LLCBuy450,924450,924$2,796
Q3 2021Mairs & Power Growth FundSell-233148,367$1,246
Q2 2021Mairs & Power Growth FundBuy47,000148,600$1,731
Q4 2020Mairs & Power Growth FundBuy101,600101,600$1,674

Frequently asked questions about HYLN activity

  • Which institutional owners are buying HYLN?

    Institutional owners buying HYLN 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 HYLN activity?

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

  • Is institutional interest in HYLN increasing?

    Institutional interest in HYLN 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.