Ticker · CUSIP 09263B207
Holders (tracked)
13
Combined shares
2,028,774
Combined value
$37.69M
Last close
$39.00
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 6.
Price is +109.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
17 events
- +109,744 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−32,861 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+30,294 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+5,396 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−73,114 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−117,860 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+2,088 shares · 2025Q4Position
- Steve Cohen (Point72) opened position2026-02-17+140,800 shares · 2025Q4Position
- −14,879 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−140,063 shares · 2025Q4Position
- −54,289 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+169,140 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−64,675 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+2,694 shares · 2025Q3Position
- AQR Capital Management trimmed2025-11-14−9,647 shares · 2025Q3Position
- +14,879 shares · 2025Q3Position
- Renaissance Technologies opened position2025-11-13+140,063 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of BKSY…
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 |
|---|---|---|---|---|
| T. Rowe Price | 2025Q1 | $0.01 | +307076.4% | $731K |
| Izzy Englander (Millennium Mgmt) | 2024Q3 | $10.40 | +275.1% | $37.3M |
| Paul Tudor Jones (Tudor Investment) | 2025Q1 | $13.30 | +193.3% | $4.3M |
| AQR Capital Management | 2025Q1 | $16.18 | +141.0% | $1.2M |
| Steve Cohen (Point72) | 2025Q4 | $18.75 | +108.0% | $1.8M |
| Steve Cohen (Point72) | 2025Q4 | $18.75 | +108.0% | $1.8M |
| Two Sigma Investments | 2024Q4 | $19.48 | +100.2% | $1.7M |
| D.E. Shaw & Co. | 2025Q3 | $19.55 | +99.5% | $2.1M |
| D.E. Shaw & Co. | 2025Q3 | $19.55 | +99.5% | $2.1M |
| D.E. Shaw & Co. | 2025Q3 | $19.55 | +99.5% | $2.1M |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $19.73 | +97.7% | $9.6M |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $19.73 | +97.7% | $9.6M |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $19.73 | +97.7% | $9.6M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions3
- Steve Cohen (Point72)+140,800$2.6M
- Paul Tudor Jones (Tudor Investment)+109,744$2.1M
- D.E. Shaw & Co.+30,294$568K
Added to2
- AQR Capital Management+5,396$101K
- T. Rowe Price+2,088$39
Trimmed3
- Izzy Englander (Millennium Mgmt)−117,860$2.2M
- Two Sigma Investments−73,114$1.4M
- Ken Griffin (Citadel Advisors)−32,861$616K
Exited2
- Renaissance Technologies−140,063$2.8M
- Ray Dalio (Bridgewater Associates)−14,879$300K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 4 | $1.3M |
| 2024Q4 | 6 | $10.9M |
| 2025Q1 | 8 | $11.5M |
| 2025Q2 | 8 | $39.6M |
| 2025Q3 | 11 | $44.8M |
| 2025Q4 | 13 | $37.7M |
Who owns BKSY
13 super-investors · 2025Q4
Tracked stake
2.03M
shares
Combined value
$38M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New6Added2Trim5
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 956.7K | $18M |
| 2 | Ken Griffin Citadel Advisors | 245.2K | $5M |
| 3 | Ken Griffin Citadel Advisors | 155.0K | $3M |
| 4 | Ken Griffin Citadel Advisors | 151.5K | $3M |
| 5 | Paul Tudor Jones Tudor Investment | 109.7K | $2M |
| 6 | Steve Cohen Point72 | 94.2K | $2M |
| 7 | D.E. Shaw & Co. | 92.8K | $2M |
| 8 | D.E. Shaw & Co. | 52.8K | $990K |
| 9 | Steve Cohen Point72 | 46.6K | $874K |
| 10 | Two Sigma Investments | 44.8K | $840K |
| 11 | AQR Capital Management | 30.4K | $570K |
| 12 | D.E. Shaw & Co. | 30.3K | $568K |
| 13 | T. Rowe Price | 18.7K | $352 |
Recent moves
20 transactions
- +109,744 · 2025Q4
- −32,861 · 2025Q4
- +30,294 · 2025Q4
- +5,396 · 2025Q4
- −73,114 · 2025Q4
- −117,860 · 2025Q4
- +2,088 · 2025Q4
- +140,800 · 2025Q4
- −14,879 · 2025Q4
- −140,063 · 2025Q4
- −54,289 · 2025Q3
- +169,140 · 2025Q3
- −9,647 · 2025Q3
- +2,694 · 2025Q3
- −64,675 · 2025Q3
- +140,063 · 2025Q3
- +14,879 · 2025Q3
- +162,127 · 2025Q2
- +4,671 · 2025Q2
- +2,787 · 2025Q2
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