JACK (JACK) Institutional Ownership Changes & 13F Activity

JACK. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Greenlight Capital, Engaged Capital, and Scion Asset Management.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy105,400115,400$2,186,830
Q3 2023Renaissance Technologies LLCSell-10,00010,000$691
Q2 2023Renaissance Technologies LLCSell-138,30020,000$1,951
Q1 2023Renaissance Technologies LLCBuy150,300158,300$13,865
Q2 2022Renaissance Technologies LLCSell-28,7008,000$448
Q1 2022Renaissance Technologies LLCBuy26,10036,700$3,428
Q4 2021Greenlight CapitalBuy62,224211,024$18,460
Q3 2021Renaissance Technologies LLCSell-22,50010,600$1,032
Q3 2021Greenlight CapitalBuy9,000148,800$14,483
Q2 2021Renaissance Technologies LLCSell-264,23833,100$3,689
Q2 2021Greenlight CapitalSell-40,000139,800$15,579
Q1 2021Greenlight CapitalBuy58,800179,800$19,738
Q1 2021Renaissance Technologies LLCBuy26,438297,338$32,642
Q4 2020Greenlight CapitalSell-80,500121,000$11,229
Q4 2020Renaissance Technologies LLCBuy8,648270,900$25,140
Q3 2020Renaissance Technologies LLCBuy213,552262,252$20,799
Q3 2020Greenlight CapitalBuy11,000201,500$15,981
Q2 2020Engaged CapitalBuy353,378353,378$26,182
Q2 2020Greenlight CapitalBuy190,500190,500$14,114
Q1 2020Scion Asset ManagementBuy300,000300,000$10,515
Q3 2019Renaissance Technologies LLCSell-136,00048,700$4,438
Q2 2019Renaissance Technologies LLCBuy30,300184,700$15,033
Q1 2019Renaissance Technologies LLCBuy107,900154,400$12,516
Q1 2018Renaissance Technologies LLCBuy11,50046,500$3,968
Q2 2017Renaissance Technologies LLCSell-209,70035,000$3,448
Q4 2016Renaissance Technologies LLCBuy45,400244,700$27,318
Q1 2016Renaissance Technologies LLCBuy67,800199,300$12,729
Q4 2015Renaissance Technologies LLCSell-86,600131,500$10,087
Q3 2015Renaissance Technologies LLCSell-222,500218,100$16,802
Q2 2015Renaissance Technologies LLCSell-28,900440,600$38,843

Frequently asked questions about JACK activity

  • Which institutional owners are buying JACK?

    Institutional owners buying JACK 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 JACK activity?

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

  • Is institutional interest in JACK increasing?

    Institutional interest in JACK 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.

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