Ticker · CUSIP 98937L105
Holders (tracked)
11
Combined shares
1,827,221
Combined value
$62.18M
Last close
$21.82
Quarter
2025Q4
Price · 1Y$21.82+12.90 (+144.62%)H $43.17 · L $8.68 · Avg Vol 476K
Position opened
Tracked holders · last 8 quarters
+6 vs previous quarter over the last 6.
Price is -35.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
13 events
- +24,459 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−5,282 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−22,690 shares · 2025Q4Position
- Steve Cohen (Point72) opened position2026-02-17+368,400 shares · 2025Q4Position
- T. Rowe Price trimmed2026-02-17−5,050 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−2,190 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+53,636 shares · 2025Q4Position
- +71,850 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+765 shares · 2025Q3Position
- T. Rowe Price trimmed2025-11-14−110,904 shares · 2025Q3Position
- Wellington Management trimmed2025-11-14−21,394 shares · 2025Q3Position
- AQR Capital Management trimmed2025-11-14−84 shares · 2025Q3Position
- Norges Bank (Norway SWF) opened position2025-11-12+75,000 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ZBIO…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Two Sigma Investments | 2024Q3 | $14.47 | +50.8% | $329K |
| Izzy Englander (Millennium Mgmt) | 2024Q3 | $15.79 | +38.2% | $1.1M |
| T. Rowe Price | 2024Q3 | $16.40 | +33.1% | $8.1M |
| Wellington Management | 2024Q3 | $16.48 | +32.4% | $18.7M |
| Steve Cohen (Point72) | 2024Q3 | $24.63 | -11.4% | $382K |
| Steve Cohen (Point72) | 2024Q3 | $24.63 | -11.4% | $382K |
| Steve Cohen (Point72) | 2024Q3 | $24.63 | -11.4% | $382K |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $26.06 | -16.3% | $482K |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $26.06 | -16.3% | $482K |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $26.06 | -16.3% | $482K |
| AQR Capital Management | 2025Q2 | $27.94 | -21.9% | $1.7M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Steve Cohen (Point72)+368,400$9.2M
- Ken Griffin (Citadel Advisors)+24,459$888K
Added to1
- AQR Capital Management+53,636$1.9M
Trimmed4
- Izzy Englander (Millennium Mgmt)−22,690$824K
- Two Sigma Investments−5,282$192K
- Wellington Management−2,190$80K
- T. Rowe Price−5,050$183
Exited0
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Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 8 | $39.7M |
| 2024Q4 | 6 | $7.0M |
| 2025Q1 | 2 | $11.0M |
| 2025Q2 | 5 | $16.5M |
| 2025Q3 | 5 | $29.9M |
| 2025Q4 | 11 | $62.2M |
Who owns ZBIO
11 super-investors · 2025Q4
Tracked stake
1.83M
shares
Combined value
$62M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New6Added1Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 855.3K | $31M |
| 2 | T. Rowe Price | 369.2K | $13M |
| 3 | Steve Cohen Point72 | 368.4K | $9M |
| 4 | AQR Capital Management | 78.2K | $3M |
| 5 | Izzy Englander Millennium Mgmt | 49.2K | $2M |
| 6 | Ken Griffin Citadel Advisors | 24.5K | $888K |
| 7 | Ken Griffin Citadel Advisors | 22.1K | $802K |
| 8 | Steve Cohen Point72 | 17.5K | $635K |
| 9 | Steve Cohen Point72 | 17.5K | $635K |
| 10 | Two Sigma Investments | 15.1K | $548K |
| 11 | Ken Griffin Citadel Advisors | 10.2K | $370K |
Recent moves
20 transactions
- −5,282 · 2025Q4
- +24,459 · 2025Q4
- −22,690 · 2025Q4
- +368,400 · 2025Q4
- TRIMT. Rowe Price−5,050 · 2025Q4
- −2,190 · 2025Q4
- +53,636 · 2025Q4
- +765 · 2025Q3
- +71,850 · 2025Q3
- −84 · 2025Q3
- −21,394 · 2025Q3
- TRIMT. Rowe Price−110,904 · 2025Q3
- +75,000 · 2024Q3
- +24,668 · 2025Q2
- +19,617 · 2025Q2
- TRIMT. Rowe Price−32,404 · 2025Q2
- +5,295 · 2025Q2
- −134,896 · 2025Q1
- −17,045 · 2025Q1
- +6,386 · 2025Q1
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