Ticker · CUSIP 98923K103
Holders (tracked)
5
Combined shares
4,011,357
Combined value
$122.27M
Last close
—
Quarter
2025Q3
Tracked holders · last 8 quarters
Flat over the last 6 quarters.
SEC event timeline
8 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−1,567,649 shares · 2025Q413F
- D.E. Shaw & Co. exited2026-02-17−262,675 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) exited2026-02-17−1,958,833 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−214,700 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+1,917,896 shares · 2025Q313F
- D.E. Shaw & Co. opened position2025-11-14+262,675 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−362,821 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+122,900 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q3
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- D.E. Shaw & Co.+262,675$8.0M
Added to2
- Izzy Englander (Millennium Mgmt)+1,917,896$58.5M
- Renaissance Technologies+122,900$3.7M
Trimmed0
—
Exited1
- Norges Bank (Norway SWF)−362,821$9.3M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q2 | 6 | $50.6M |
| 2024Q3 | 7 | $43.2M |
| 2024Q4 | 7 | $29.4M |
| 2025Q1 | 5 | $17.4M |
| 2025Q2 | 5 | $32.3M |
| 2025Q3 | 5 | $122.3M |
Who owns ZKN
5 super-investors · 2025Q3
Tracked stake
4.01M
shares
Combined value
$122M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added2Held2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 1.96M | $60M |
| 2 | Ken Griffin Citadel Advisors | 1.57M | $48M |
| 3 | D.E. Shaw & Co. | 262.7K | $8M |
| 4 | Renaissance Technologies | 214.7K | $7M |
| 5 | Ken Griffin Citadel Advisors | 7.5K | $229K |
Recent moves
20 transactions
- SOLDD.E. Shaw & Co.−262,675 · 2025Q4
- −1,567,649 · 2025Q4
- −1,958,833 · 2025Q4
- −214,700 · 2025Q4
- +262,675 · 2025Q3
- +1,917,896 · 2025Q3
- +122,900 · 2025Q3
- −362,821 · 2025Q3
- −225,811 · 2025Q2
- +362,821 · 2025Q2
- −190,385 · 2025Q2
- −318,192 · 2025Q1
- +190,126 · 2025Q1
- −8,970 · 2025Q1
- −222,815 · 2025Q1
- −344,965 · 2024Q4
- −554,726 · 2024Q4
- −145,000 · 2024Q4
- +8,970 · 2024Q4
- +240,300 · 2024Q4
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