Ticker · CUSIP 092508100
Holders (tracked)
2
Combined shares
23,838
Combined value
$258.2K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
2 events
- +11,258 shares · 2025Q4Position
- +12,580 shares · 2025Q4Position
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Izzy Englander (Millennium Mgmt)+12,580$136K
- Ken Griffin (Citadel Advisors)+11,258$122K
Added to0
—
Trimmed0
—
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2018Q4 | 2 | $344K |
| 2019Q1 | 1 | $862K |
| 2019Q2 | 1 | $623K |
| 2019Q3 | 1 | $148K |
| 2019Q4 | 1 | $1.9M |
| 2020Q1 | 1 | $296K |
| 2020Q2 | 2 | $61.6M |
| 2020Q3 | 1 | $10.9M |
| 2020Q4 | 1 | $452K |
| 2022Q1 | 2 | $4.3M |
| 2022Q2 | 1 | $818K |
| 2023Q1 | 1 | $201 |
| 2023Q3 | 1 | $122K |
| 2024Q3 | 1 | $796K |
| 2024Q4 | 1 | $194K |
| 2025Q4 | 2 | $258K |
Who owns BTZ
2 super-investors · 2025Q4
Tracked stake
23.8K
shares
Combined value
$258K
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 12.6K | $136K |
| 2 | Ken Griffin Citadel Advisors | 11.3K | $122K |
Recent moves
20 transactions
- +12,580 · 2025Q4
- +11,258 · 2025Q4
- −18,581 · 2025Q1
- −51,958 · 2024Q4
- +70,539 · 2024Q3
- −12,593 · 2023Q4
- +12,593 · 2023Q3
- −19,521 · 2023Q2
- +19,521 · 2023Q1
- −13,567 · 2022Q2
- +13,567 · 2022Q1
- −30,733 · 2021Q1
- +30,733 · 2020Q4
- SOLDBlackRock−768,351 · 2020Q4
- −15,231 · 2020Q3
- TRIMBlackRock−3,884,152 · 2020Q3
- NEWBlackRock+4,652,503 · 2020Q2
- −10,158 · 2020Q2
- −110,752 · 2020Q1
- +125,261 · 2019Q4
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