Ticker · CUSIP 09257A108
Holders (tracked)
1
Combined shares
12,779
Combined value
$140.3K
Last close
$12.19
Quarter
2025Q4
Price · 1Y$12.19+4.09 (+50.47%)H $13.49 · L $7.94 · Avg Vol 221K
Position opened
Tracked holders · last 8 quarters
-2 vs previous quarter over the last 8.
Price is +11.0% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
4 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−12,827 shares · 2025Q4Position
- Two Sigma Investments exited2026-02-17−147,166 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−13,430 shares · 2025Q4Position
- +26,209 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of BCX…
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 |
|---|---|---|---|---|
| Izzy Englander (Millennium Mgmt) | 2017Q1 | $7.37 | +65.5% | $156K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed1
- Izzy Englander (Millennium Mgmt)−13,430$147K
Exited2
- Two Sigma Investments−147,166$1.5M
- Ken Griffin (Citadel Advisors)−12,827$130K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2017Q3 | 2 | $575K |
| 2017Q4 | 1 | $109K |
| 2018Q1 | 1 | $466K |
| 2018Q2 | 1 | $360K |
| 2018Q4 | 1 | $79K |
| 2020Q1 | 2 | $141K |
| 2020Q2 | 1 | $544K |
| 2020Q3 | 2 | $260K |
| 2020Q4 | 1 | $5.1M |
| 2021Q3 | 1 | $1.1M |
| 2022Q4 | 1 | $813K |
| 2023Q3 | 1 | $98K |
| 2024Q1 | 1 | $324K |
| 2025Q2 | 1 | $1.4M |
| 2025Q3 | 3 | $1.9M |
| 2025Q4 | 1 | $140K |
Who owns BCX
1 super-investors · 2025Q4
Tracked stake
12.8K
shares
Combined value
$140K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 12.8K | $140K |
Recent moves
20 transactions
- −147,166 · 2025Q4
- −13,430 · 2025Q4
- −12,827 · 2025Q4
- +26,209 · 2025Q3
- +147,166 · 2025Q2
- −35,656 · 2024Q2
- +35,656 · 2024Q1
- −81,565 · 2023Q1
- +81,565 · 2022Q4
- −120,695 · 2021Q4
- +120,695 · 2021Q3
- −684,589 · 2021Q1
- −13,443 · 2020Q4
- +654,267 · 2020Q4
- +13,443 · 2020Q3
- −58,484 · 2020Q3
- +76,438 · 2020Q2
- −15,605 · 2020Q2
- +15,605 · 2020Q1
- +12,368 · 2020Q1
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