DUCOMMUN INC (DCO) Stock Institutional Trading Activity


DUCOMMUN INC (DCO) 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 First Eagle U.S. Value. 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-6,900251,800$13,192
Q4 2021First Eagle U.S. ValueBuy19,24828,825$1,348
Q4 2021Renaissance Technologies LLCSell-13,500258,700$12,099
Q3 2021First Eagle U.S. ValueBuy8,7009,577$482
Q3 2021Renaissance Technologies LLCSell-21,600272,200$13,705
Q2 2021First Eagle U.S. ValueBuy877877$48
Q2 2021Renaissance Technologies LLCSell-40,000293,800$16,030
Q1 2021Renaissance Technologies LLCSell-12,200333,800$20,028
Q4 2020Renaissance Technologies LLCSell-7,300346,000$18,580
Q3 2020Renaissance Technologies LLCSell-48,200353,300$11,631
Q2 2020Renaissance Technologies LLCSell-105,200401,500$14,000
Q1 2020Renaissance Technologies LLCSell-34,100506,700$12,591
Q4 2019Renaissance Technologies LLCSell-30,400540,800$27,327
Q3 2019Renaissance Technologies LLCSell-79,600571,200$24,219
Q2 2019Renaissance Technologies LLCBuy29,803650,800$29,332
Q1 2019Renaissance Technologies LLCBuy24,997620,997$27,026
Q4 2018Renaissance Technologies LLCBuy43,100596,000$21,647
Q3 2018Renaissance Technologies LLCBuy2,800552,900$22,580
Q1 2018Renaissance Technologies LLCSell-75,900550,100$16,712
Q4 2017Renaissance Technologies LLCSell-15,600626,000$17,810
Q3 2017Renaissance Technologies LLCBuy44,100641,600$20,563
Q2 2017Renaissance Technologies LLCBuy64,400597,500$18,869
Q1 2017Renaissance Technologies LLCSell-25,300533,100$15,348
Q4 2016Renaissance Technologies LLCBuy67,800558,400$14,273
Q3 2016Renaissance Technologies LLCBuy119,800490,600$11,205
Q2 2016Renaissance Technologies LLCBuy45,000370,800$7,334
Q1 2016Renaissance Technologies LLCBuy8,400325,800$4,968
Q4 2015Renaissance Technologies LLCBuy9,900317,400$5,148
Q3 2015Renaissance Technologies LLCSell-14,500307,500$6,172
Q2 2015Renaissance Technologies LLCBuy45,900322,000$8,266

Frequently asked questions about DCO activity

  • Which institutional owners are buying DCO?

    Institutional owners buying DCO 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 DCO activity?

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

  • Is institutional interest in DCO increasing?

    Institutional interest in DCO 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.