Ticker · CUSIP 09227Q100
Holders (tracked)
10
Combined shares
1,928,697
Combined value
$119.70M
Last close
$38.51
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
Price is -37.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
16 events
- +88,051 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+138,045 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−3,359 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−227,732 shares · 2025Q413F
- AQR Capital Management added2026-02-17+469,391 shares · 2025Q413F
- Steve Cohen (Point72) added2026-02-17+42,746 shares · 2025Q413F
- T. Rowe Price added2026-02-17+2,185 shares · 2025Q413F
- Ray Dalio (Bridgewater Associates) added2026-02-13+1,869 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+471,351 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−107,702 shares · 2025Q313F
- Steve Cohen (Point72) added2025-11-14+5,791 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+61,947 shares · 2025Q313F
- AQR Capital Management added2025-11-14+145,441 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−16,744 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−490,621 shares · 2025Q313F
- +8,066 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of BLKB…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $4.55 | +747.0% | $1.5M |
| Paul Tudor Jones (Tudor Investment) | 2019Q4 | $62.91 | -38.8% | $3.4M |
| AQR Capital Management | 2016Q1 | $63.47 | -39.3% | $29.6M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $63.70 | -39.5% | $173K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $63.70 | -39.5% | $173K |
| D.E. Shaw & Co. | 2016Q1 | $63.86 | -39.7% | $4.5M |
| Ray Dalio (Bridgewater Associates) | 2025Q3 | $64.12 | -39.9% | $383K |
| Izzy Englander (Millennium Mgmt) | 2016Q3 | $64.30 | -40.1% | $5.1M |
| Steve Cohen (Point72) | 2023Q1 | $64.94 | -40.7% | $2.6M |
| Norges Bank (Norway SWF) | 2016Q1 | $67.75 | -43.2% | $18.2M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions2
- Norges Bank (Norway SWF)+471,351$29.8M
- Paul Tudor Jones (Tudor Investment)+88,051$5.6M
Added to5
- AQR Capital Management+469,391$29.7M
- Ken Griffin (Citadel Advisors)+138,045$8.7M
- Steve Cohen (Point72)+42,746$2.7M
- Ray Dalio (Bridgewater Associates)+1,869$118K
- T. Rowe Price+2,185$138
Trimmed2
- Izzy Englander (Millennium Mgmt)−227,732$14.4M
- D.E. Shaw & Co.−3,359$213K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $19.53B |
| 2022Q2 | 10 | $9.35B |
| 2022Q3 | 11 | $9.6M |
| 2022Q4 | 11 | $369.0M |
| 2023Q1 | 13 | $451.3M |
| 2023Q2 | 14 | $481.2M |
| 2023Q3 | 12 | $438.6M |
| 2023Q4 | 9 | $549.2M |
| 2024Q1 | 10 | $497.8M |
| 2024Q2 | 11 | $486.8M |
| 2024Q3 | 10 | $101.2M |
| 2024Q4 | 10 | $43.7M |
| 2025Q1 | 7 | $12.9M |
| 2025Q2 | 7 | $91.1M |
| 2025Q3 | 8 | $58.3M |
| 2025Q4 | 10 | $119.7M |
Who owns BLKB
10 super-investors · 2025Q4
Tracked stake
1.93M
shares
Combined value
$120M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added6Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 767.8K | $49M |
| 2 | Norges Bank Norway SWF | 471.4K | $30M |
| 3 | Ken Griffin Citadel Advisors | 228.9K | $14M |
| 4 | Izzy Englander Millennium Mgmt | 133.6K | $8M |
| 5 | D.E. Shaw & Co. | 117.4K | $7M |
| 6 | Paul Tudor Jones Tudor Investment | 88.1K | $6M |
| 7 | Steve Cohen Point72 | 68.7K | $4M |
| 8 | Ray Dalio Bridgewater Associates | 9.9K | $629K |
| 9 | Ken Griffin Citadel Advisors | 4.5K | $285K |
| 10 | T. Rowe Price | 38.4K | $2K |
Recent moves
20 transactions
- −227,732 · 2025Q4
- +469,391 · 2025Q4
- +138,045 · 2025Q4
- +88,051 · 2025Q4
- +2,185 · 2025Q4
- +42,746 · 2025Q4
- TRIMD.E. Shaw & Co.−3,359 · 2025Q4
- +1,869 · 2025Q4
- +471,351 · 2025Q4
- TRIMT. Rowe Price−16,744 · 2025Q3
- −107,702 · 2025Q3
- +145,441 · 2025Q3
- +61,947 · 2025Q3
- +5,791 · 2025Q3
- +8,066 · 2025Q3
- −490,621 · 2025Q3
- +10,100 · 2025Q2
- +428,647 · 2025Q2
- +28,152 · 2025Q2
- TRIMT. Rowe Price−379,081 · 2025Q2
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