Ticker · CUSIP 058586108
Holders (tracked)
6
Combined shares
17,944,574
Combined value
$45.60M
Last close
$2.96
Quarter
2025Q4
Price · 1Y$2.96+1.83 (+161.95%)H $3.98 · L $1.09 · Avg Vol 5.9M
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is +16.5% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
7 events
- Izzy Englander (Millennium Mgmt) added2026-02-17+350,395 shares · 2025Q4Position
- D.E. Shaw & Co. added2026-02-17+4,117,293 shares · 2025Q4Position
- Two Sigma Investments added2026-02-17+486,544 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) added2026-02-17+2,458,113 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−472,644 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+657,107 shares · 2025Q3Position
- D.E. Shaw & Co. trimmed2025-11-14−957,541 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of BLDP…
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 | $1.95 | +51.8% | $7.1M |
| Two Sigma Investments | 2017Q3 | $2.04 | +45.0% | $20.0M |
| D.E. Shaw & Co. | 2019Q3 | $2.33 | +26.9% | $14.7M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $2.54 | +16.5% | $468K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $2.54 | +16.5% | $468K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $2.54 | +16.5% | $468K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to4
- D.E. Shaw & Co.+4,117,293$10.5M
- Ken Griffin (Citadel Advisors)+2,458,113$6.2M
- Two Sigma Investments+486,544$1.2M
- Izzy Englander (Millennium Mgmt)+350,395$891K
Trimmed0
—
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 12 | $32.15B |
| 2022Q2 | 10 | $18.28B |
| 2022Q3 | 9 | $49.9M |
| 2022Q4 | 8 | $38.3M |
| 2023Q1 | 7 | $44.6M |
| 2023Q2 | 6 | $24.2M |
| 2023Q3 | 7 | $31.6M |
| 2023Q4 | 8 | $11.9M |
| 2024Q1 | 9 | $23.3M |
| 2024Q2 | 7 | $17.1M |
| 2024Q3 | 6 | $14.9M |
| 2024Q4 | 6 | $14.0M |
| 2025Q1 | 6 | $7.9M |
| 2025Q2 | 6 | $16.9M |
| 2025Q3 | 6 | $28.4M |
| 2025Q4 | 6 | $45.6M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2024-07-31 | Austin Scott | Sell | $1K – $15K | PDF ↗ |
Who owns BLDP
6 super-investors · 2025Q4
Tracked stake
17.94M
shares
Combined value
$46M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added6
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Two Sigma Investments | 6.77M | $17M |
| 2 | D.E. Shaw & Co. | 4.95M | $13M |
| 3 | Ken Griffin Citadel Advisors | 3.60M | $9M |
| 4 | Izzy Englander Millennium Mgmt | 2.41M | $6M |
| 5 | Ken Griffin Citadel Advisors | 158.1K | $402K |
| 6 | Ken Griffin Citadel Advisors | 50.8K | $129K |
Recent moves
20 transactions
- +486,544 · 2025Q4
- +350,395 · 2025Q4
- +2,458,113 · 2025Q4
- +4,117,293 · 2025Q4
- TRIMD.E. Shaw & Co.−957,541 · 2025Q3
- +657,107 · 2025Q3
- −472,644 · 2025Q3
- TRIMD.E. Shaw & Co.−757,232 · 2025Q2
- +3,060,231 · 2025Q2
- +756,451 · 2025Q2
- +772,007 · 2025Q1
- −872,026 · 2025Q1
- +2,312,558 · 2025Q1
- −718,838 · 2024Q1
- +661,413 · 2024Q4
- +1,177,718 · 2024Q4
- TRIMD.E. Shaw & Co.−93,612 · 2024Q4
- −92,388 · 2024Q3
- +803,251 · 2024Q3
- TRIMD.E. Shaw & Co.−163,746 · 2024Q3
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- BLDP insider tradingEvery Form 4 filing by BLDP officers, directors, and 10%+ holders.
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