Ticker · CUSIP 15870P307
Holders (tracked)
2
Combined shares
165,042
Combined value
$1.14M
Last close
$6.04
Quarter
2025Q4
Price · 1Y$6.04-1.93 (-24.22%)H $8.91 · L $5.72 · Avg Vol 21K
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
Price is -12.7% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
5 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−16,326 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−2,432 shares · 2025Q4Position
- Renaissance Technologies trimmed2026-02-12−12,422 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−11,429 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−13,778 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CSBR…
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) | 2016Q3 | $8.79 | -31.4% | $62K |
| Renaissance Technologies | 2017Q2 | $10.36 | -41.8% | $934K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed2
- Renaissance Technologies−12,422$86K
- Izzy Englander (Millennium Mgmt)−2,432$17K
Exited1
- Ken Griffin (Citadel Advisors)−16,326$106K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 5 | $4.5M |
| 2022Q2 | 5 | $4.6M |
| 2022Q3 | 6 | $4.2M |
| 2022Q4 | 6 | $1.6M |
| 2023Q1 | 6 | $1.3M |
| 2023Q2 | 6 | $2.5M |
| 2023Q3 | 6 | $1.8M |
| 2023Q4 | 5 | $1.5M |
| 2024Q1 | 5 | $1.3M |
| 2024Q2 | 5 | $1.3M |
| 2024Q3 | 2 | $637K |
| 2024Q4 | 5 | $1.4M |
| 2025Q1 | 5 | $2.2M |
| 2025Q2 | 3 | $1.6M |
| 2025Q3 | 3 | $1.3M |
| 2025Q4 | 2 | $1.1M |
Who owns CSBR
2 super-investors · 2025Q4
Tracked stake
165.0K
shares
Combined value
$1M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 154.8K | $1M |
| 2 | Izzy Englander Millennium Mgmt | 10.2K | $71K |
Recent moves
20 transactions
- −16,326 · 2025Q4
- −2,432 · 2025Q4
- −12,422 · 2025Q4
- −11,429 · 2025Q3
- −13,778 · 2025Q3
- −42,549 · 2025Q2
- +29,000 · 2025Q2
- +55,672 · 2025Q1
- +13,200 · 2025Q1
- +178 · 2024Q4
- +18,848 · 2024Q4
- +10,763 · 2024Q3
- −2,600 · 2024Q3
- ADDBlackRock+389 · 2024Q2
- −2,100 · 2024Q2
- −100 · 2024Q1
- TRIMBlackRock−414 · 2024Q1
- −33,466 · 2023Q4
- −1,000 · 2023Q4
- TRIMBlackRock−200 · 2023Q4
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