IRIDEX CORP (IRIX) Institutional Ownership Changes & 13F Activity

IRIDEX CORP (IRIX) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2018Renaissance Technologies LLCBuy43,000335,500$2,130
Q1 2018Renaissance Technologies LLCBuy19,600292,500$1,673
Q4 2017Renaissance Technologies LLCBuy31,000272,900$2,079
Q3 2017Renaissance Technologies LLCSell-1,100241,900$2,267
Q2 2017Renaissance Technologies LLCBuy42,696243,000$2,403
Q1 2017Renaissance Technologies LLCBuy4,404200,304$2,378
Q4 2016Renaissance Technologies LLCSell-14,600195,900$2,754
Q3 2016Renaissance Technologies LLCSell-20,600210,500$3,050
Q2 2016Renaissance Technologies LLCSell-15,200231,100$3,418
Q1 2016Renaissance Technologies LLCSell-100246,300$2,517
Q4 2015Renaissance Technologies LLCSell-8,500246,400$2,289
Q3 2015Renaissance Technologies LLCBuy21,087254,900$1,940
Q2 2015Renaissance Technologies LLCBuy14,013233,813$1,929
Q1 2015Renaissance Technologies LLCBuy9,100219,800$2,347
Q4 2014Renaissance Technologies LLCBuy8,200210,700$1,812
Q3 2014Renaissance Technologies LLCBuy14,900202,500$1,418
Q2 2014Renaissance Technologies LLCBuy17,600187,600$1,559
Q1 2014Renaissance Technologies LLCBuy8,900170,000$1,518
Q4 2013Renaissance Technologies LLCBuy49,100161,100$1,638
Q3 2013Renaissance Technologies LLCBuy5,000112,000$664
Q2 2013Renaissance Technologies LLCBuy107,000107,000$632

Frequently asked questions about IRIX activity

  • Which institutional owners are buying IRIX?

    Institutional owners buying IRIX 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 IRIX activity?

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

  • Is institutional interest in IRIX increasing?

    Institutional interest in IRIX 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.

Related IRIX insights