Ticker · CUSIP 147448104
Holders (tracked)
11
Combined shares
3,148,160
Combined value
$308.33M
Last close
$81.22
Quarter
2025Q4
Price · 1Y$81.22-37.08 (-31.34%)H $120.37 · L $74.97 · Avg Vol 674K
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is -17.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
21 events
- +446,242 shares · 2025Q4Position
- D.E. Shaw & Co. exited2026-02-17−48,792 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−83,386 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) added2026-02-17+399,971 shares · 2025Q4Position
- Two Sigma Investments opened position2026-02-17+12,571 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) exited2026-02-17−119,691 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+6,784 shares · 2025Q4Position
- T. Rowe Price trimmed2026-02-17−109,000 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−68,642 shares · 2025Q4Position
- Norges Bank (Norway SWF) opened position2026-02-10+401,703 shares · 2025Q4Position
- Ken Fisher (Fisher Asset Mgmt) added2026-02-09+236 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+72,749 shares · 2025Q3Position
- Two Sigma Investments exited2025-11-14−3,631 shares · 2025Q3Position
- D.E. Shaw & Co. trimmed2025-11-14−13,205 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+174,877 shares · 2025Q3Position
- Wellington Management added2025-11-14+317,192 shares · 2025Q3Position
- AQR Capital Management added2025-11-14+946 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+49,642 shares · 2025Q3Position
- Norges Bank (Norway SWF) exited2025-11-13−484,902 shares · 2025Q3Position
- Ken Fisher (Fisher Asset Mgmt) added2025-11-12+860 shares · 2025Q3Position
- Norges Bank (Norway SWF) added2025-11-12+117,158 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CWST…
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 |
|---|---|---|---|---|
| Mario Gabelli (GAMCO) | 2016Q1 | $6.70 | +1112.6% | $8.1M |
| T. Rowe Price | 2016Q1 | $48.75 | +66.6% | $28.9M |
| Wellington Management | 2017Q1 | $89.93 | -9.7% | $106.2M |
| Ken Fisher (Fisher Asset Mgmt) | 2020Q1 | $90.75 | -10.5% | $2.2M |
| Two Sigma Investments | 2016Q1 | $97.13 | -16.4% | $1.0M |
| AQR Capital Management | 2016Q1 | $97.45 | -16.7% | $1.5M |
| Ken Griffin (Citadel Advisors) | 2017Q2 | $97.92 | -17.1% | $37.7M |
| Ken Griffin (Citadel Advisors) | 2017Q2 | $97.92 | -17.1% | $37.7M |
| Ken Griffin (Citadel Advisors) | 2017Q2 | $97.92 | -17.1% | $37.7M |
| Ron Baron (Baron Capital / BAMCO) | 2025Q4 | $97.94 | -17.1% | $36.2M |
| Norges Bank (Norway SWF) | 2019Q3 | $1965.35 | -95.9% | $32.6M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions3
- Ron Baron (Baron Capital / BAMCO)+446,242$43.7M
- Norges Bank (Norway SWF)+401,703$39.3M
- Two Sigma Investments+12,571$1.2M
Added to3
- Ken Griffin (Citadel Advisors)+399,971$39.2M
- AQR Capital Management+6,784$664K
- Ken Fisher (Fisher Asset Mgmt)+236$23K
Trimmed2
- Wellington Management−83,386$8.2M
- T. Rowe Price−109,000$11K
Exited3
- Izzy Englander (Millennium Mgmt)−119,691$11.4M
- Renaissance Technologies−68,642$6.5M
- D.E. Shaw & Co.−48,792$4.6M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 12 | $35.92B |
| 2022Q2 | 11 | $31.85B |
| 2022Q3 | 12 | $516.8M |
| 2022Q4 | 12 | $544.2M |
| 2023Q1 | 12 | $547.0M |
| 2023Q2 | 15 | $698.8M |
| 2023Q3 | 13 | $469.1M |
| 2023Q4 | 13 | $522.5M |
| 2024Q1 | 13 | $656.4M |
| 2024Q2 | 13 | $665.0M |
| 2024Q3 | 11 | $315.7M |
| 2024Q4 | 10 | $129.3M |
| 2025Q1 | 10 | $209.4M |
| 2025Q2 | 13 | $250.1M |
| 2025Q3 | 11 | $218.9M |
| 2025Q4 | 11 | $308.3M |
Who owns CWST
11 super-investors · 2025Q4
Tracked stake
3.15M
shares
Combined value
$308M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added5Trim2Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 1.31M | $128M |
| 2 | Ken Griffin Citadel Advisors | 464.8K | $46M |
| 3 | Ron Baron Baron Capital / BAMCO | 446.2K | $44M |
| 4 | Norges Bank Norway SWF | 401.7K | $39M |
| 5 | T. Rowe Price | 355.6K | $35M |
| 6 | Mario Gabelli GAMCO | 99.2K | $10M |
| 7 | Ken Fisher Fisher Asset Mgmt | 27.7K | $3M |
| 8 | AQR Capital Management | 18.7K | $2M |
| 9 | Two Sigma Investments | 12.6K | $1M |
| 10 | Ken Griffin Citadel Advisors | 11.2K | $1M |
| 11 | Ken Griffin Citadel Advisors | 3.2K | $313K |
Recent moves
20 transactions
- +446,242 · 2025Q4
- SOLDD.E. Shaw & Co.−48,792 · 2025Q4
- TRIMT. Rowe Price−109,000 · 2025Q4
- +12,571 · 2025Q4
- +6,784 · 2025Q4
- +399,971 · 2025Q4
- −83,386 · 2025Q4
- −119,691 · 2025Q4
- −68,642 · 2025Q4
- +401,703 · 2025Q4
- +236 · 2025Q4
- −3,631 · 2025Q3
- +317,192 · 2025Q3
- +72,749 · 2025Q3
- +174,877 · 2025Q3
- TRIMD.E. Shaw & Co.−13,205 · 2025Q3
- +946 · 2025Q3
- +49,642 · 2025Q3
- −484,902 · 2025Q3
- +117,158 · 2024Q3
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