(CIO) Institutional Ownership Changes & 13F Activity
CIO (CIO) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q3 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC and Third Avenue Management.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q3 2025 | Renaissance Technologies LLC | Sell | -702,300 | 480,115 | $3,341,600 |
| Q2 2025 | Renaissance Technologies LLC | Sell | -73,600 | 1,182,415 | $6,314,096 |
| Q1 2025 | Renaissance Technologies LLC | Sell | -24,945 | 1,256,015 | $6,518,718 |
| Q4 2024 | Renaissance Technologies LLC | Buy | 15,544 | 1,280,960 | $7,070,899 |
| Q3 2024 | Renaissance Technologies LLC | Sell | -3,000 | 1,265,416 | $7,390,029 |
| Q2 2024 | Renaissance Technologies LLC | Buy | 21,600 | 1,268,416 | $6,316,712 |
| Q1 2024 | Renaissance Technologies LLC | Buy | 179,400 | 1,246,816 | $6,496 |
| Q4 2023 | Renaissance Technologies LLC | Buy | 6,000 | 1,067,416 | $6,522 |
| Q3 2023 | Renaissance Technologies LLC | Sell | -42,100 | 1,061,416 | $4,511 |
| Q2 2023 | Renaissance Technologies LLC | Sell | -304,600 | 1,103,516 | $6,147 |
| Q1 2023 | Renaissance Technologies LLC | Sell | -102,900 | 1,408,116 | $9,716 |
| Q4 2022 | Renaissance Technologies LLC | Sell | -112,500 | 1,511,016 | $12,662 |
| Q3 2022 | Renaissance Technologies LLC | Sell | -103,800 | 1,623,516 | $16,186 |
| Q2 2022 | Renaissance Technologies LLC | Buy | 108,800 | 1,727,316 | $22,369 |
| Q1 2022 | Renaissance Technologies LLC | Buy | 10,600 | 1,618,516 | $28,583 |
| Q4 2021 | Renaissance Technologies LLC | Buy | 3,100 | 1,607,916 | $31,708 |
| Q3 2021 | Renaissance Technologies LLC | Sell | -150,666 | 1,604,816 | $28,662 |
| Q2 2021 | Renaissance Technologies LLC | Sell | -129,034 | 1,755,482 | $21,821 |
| Q1 2021 | Renaissance Technologies LLC | Sell | -56,100 | 1,884,516 | $20,014 |
| Q4 2020 | Renaissance Technologies LLC | Sell | -585,254 | 1,940,616 | $18,960 |
| Q4 2020 | Third Avenue Management | Sell | -24,000 | 46,000 | $450 |
| Q3 2020 | Renaissance Technologies LLC | Sell | -135,033 | 2,525,870 | $18,995 |
| Q3 2020 | Third Avenue Management | Buy | 15,000 | 70,000 | $527 |
| Q2 2020 | Renaissance Technologies LLC | Sell | -757,894 | 2,660,903 | $26,769 |
| Q1 2020 | Renaissance Technologies LLC | Buy | 213,694 | 3,418,797 | $24,718 |
| Q1 2020 | Third Avenue Management | Buy | 55,000 | 55,000 | $398 |
| Q4 2019 | Renaissance Technologies LLC | Buy | 158,204 | 3,205,103 | $43,333 |
| Q3 2019 | Renaissance Technologies LLC | Buy | 1,207,103 | 3,046,899 | $43,845 |
| Q2 2019 | Renaissance Technologies LLC | Buy | 111,100 | 1,839,796 | $22,059 |
| Q1 2019 | Renaissance Technologies LLC | Buy | 8,200 | 1,728,696 | $19,552 |
Frequently asked questions about CIO activity
Which institutional owners are buying CIO?
Institutional owners buying CIO 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 CIO activity?
"Buy" means an investor increased their reported position in CIO compared to the prior reporting period. This reflects growing exposure to CIO rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CIO increasing?
Institutional interest in CIO 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.