Ticker · CUSIP 157085101
Holders (tracked)
11
Combined shares
28,584,898
Combined value
$58.66M
Last close
$2.00
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
Price is -2.5% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
16 events
- AQR Capital Management trimmed2026-02-17−450,832 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+45,422 shares · 2025Q413F
- D.E. Shaw & Co. added2026-02-17+54,319 shares · 2025Q413F
- T. Rowe Price added2026-02-17+17,770 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+712,678 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−2,502,368 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+23,453 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−341,500 shares · 2025Q413F
- Cathie Wood (ARK Invest) trimmed2026-02-11−649,984 shares · 2025Q413F
- D.E. Shaw & Co. added2025-11-14+66,948 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+163,535 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−180,129 shares · 2025Q313F
- AQR Capital Management added2025-11-14+252,262 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+519,301 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+74,000 shares · 2025Q313F
- Cathie Wood (ARK Invest) trimmed2025-11-12−357,416 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CERS…
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 |
|---|---|---|---|---|
| AQR Capital Management | 2016Q2 | $1.44 | +38.4% | $4.0M |
| Renaissance Technologies | 2016Q1 | $1.50 | +33.3% | $996K |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $1.73 | +15.3% | $1.9M |
| Two Sigma Investments | 2016Q3 | $1.89 | +5.9% | $3.7M |
| Ken Griffin (Citadel Advisors) | 2016Q2 | $2.06 | -2.7% | $149K |
| Ken Griffin (Citadel Advisors) | 2016Q2 | $2.06 | -2.7% | $149K |
| Ken Griffin (Citadel Advisors) | 2016Q2 | $2.06 | -2.7% | $149K |
| T. Rowe Price | 2016Q1 | $2.13 | -6.3% | $222K |
| Steve Cohen (Point72) | 2017Q1 | $4.05 | -50.6% | $47K |
| D.E. Shaw & Co. | 2016Q1 | $4.15 | -51.8% | $7.7M |
| Cathie Wood (ARK Invest) | 2016Q4 | $4.27 | -53.2% | $36.4M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Steve Cohen (Point72)+23,453$48K
Added to4
- Two Sigma Investments+712,678$1.5M
- D.E. Shaw & Co.+54,319$112K
- Ken Griffin (Citadel Advisors)+45,422$94K
- T. Rowe Price+17,770$37
Trimmed4
- Izzy Englander (Millennium Mgmt)−2,502,368$5.2M
- Cathie Wood (ARK Invest)−649,984$1.3M
- AQR Capital Management−450,832$929K
- Renaissance Technologies−341,500$703K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $697.7M |
| 2022Q2 | 15 | $188.2M |
| 2022Q3 | 14 | $133K |
| 2022Q4 | 13 | $123.4M |
| 2023Q1 | 14 | $123.9M |
| 2023Q2 | 13 | $101.4M |
| 2023Q3 | 11 | $66.2M |
| 2023Q4 | 10 | $87.0M |
| 2024Q1 | 10 | $70.1M |
| 2024Q2 | 11 | $69.7M |
| 2024Q3 | 10 | $44.8M |
| 2024Q4 | 10 | $46.6M |
| 2025Q1 | 10 | $45.7M |
| 2025Q2 | 10 | $43.6M |
| 2025Q3 | 10 | $50.2M |
| 2025Q4 | 11 | $58.7M |
Who owns CERS
11 super-investors · 2025Q4
Tracked stake
28.58M
shares
Combined value
$59M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added6Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Cathie Wood ARK Invest | 18.20M | $37M |
| 2 | D.E. Shaw & Co. | 3.87M | $8M |
| 3 | AQR Capital Management | 2.00M | $4M |
| 4 | Two Sigma Investments | 1.86M | $4M |
| 5 | Izzy Englander Millennium Mgmt | 967.7K | $2M |
| 6 | Ken Griffin Citadel Advisors | 945.0K | $2M |
| 7 | Renaissance Technologies | 498.0K | $1M |
| 8 | Ken Griffin Citadel Advisors | 74.4K | $153K |
| 9 | Ken Griffin Citadel Advisors | 31.4K | $65K |
| 10 | Steve Cohen Point72 | 23.5K | $48K |
| 11 | T. Rowe Price | 111.0K | $229 |
Recent moves
20 transactions
- +712,678 · 2025Q4
- +45,422 · 2025Q4
- +54,319 · 2025Q4
- +17,770 · 2025Q4
- −450,832 · 2025Q4
- −2,502,368 · 2025Q4
- +23,453 · 2025Q4
- −341,500 · 2025Q4
- −649,984 · 2025Q4
- TRIMT. Rowe Price−180,129 · 2025Q3
- +66,948 · 2025Q3
- +252,262 · 2025Q3
- +519,301 · 2025Q3
- +163,535 · 2025Q3
- +74,000 · 2025Q3
- −357,416 · 2025Q3
- −11,664 · 2025Q2
- −271,566 · 2025Q2
- TRIMD.E. Shaw & Co.−38,627 · 2025Q2
- +4,242 · 2025Q2
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