ZK (ZK) Institutional Ownership Changes & 13F Activity
ZK. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Renaissance Technologies LLC, Fideuram Asset Management (Ireland) Dac, Xtx Topco Ltd, Leonteq Securities Ag, and Eversource Wealth Advisors, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Xtx Topco Ltd | Buy | +10,222 | — | 10,222 | $273.23K | Q4 2025 | Feb 17, 2026 |
| Leonteq Securities Ag | Sell | -10,000 | -100.0% | 0 | $0.00 | Q4 2025 | Feb 17, 2026 |
| Barclays Plc | Buy | +134 | — | 134 | $208.00 | Q4 2025 | Feb 13, 2026 |
| Fideuram Asset Management (Ireland) Dac | Buy | +116,948 | — | 116,948 | $3.00M | Q4 2025 | Feb 10, 2026 |
| Eversource Wealth Advisors, Llc | Buy | +522 | — | 522 | $13.57K | Q4 2025 | Feb 06, 2026 |
| Farther Finance Advisors, Llc | Buy | +142 | — | 142 | $3.76K | Q4 2025 | Jan 23, 2026 |
| Renaissance Technologies LLC | Sell | -214,700 | -100.0% | 0 | $0.00 | Q4 2025 | Nov 13, 2025 |
Frequently asked questions about ZK activity
Which institutional owners are buying ZK?
Institutional owners buying ZK 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 ZK activity?
"Buy" means an investor increased their reported position in ZK compared to the prior reporting period. This reflects growing exposure to ZK rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ZK increasing?
Institutional interest in ZK 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.