Ceco Environmental
CECO
342 hedge funds and large institutions have $4.68B invested in Ceco Environmental in 2026 Q2 according to their latest regulatory filings, with 106 funds opening new positions, 138 increasing their positions, 71 reducing their positions, and 24 closing their positions.
342% more first-time investments, than exits
New positions opened: 106 | Existing positions closed: 24
149% more capital invested
Capital invested by funds: $1.88B → $4.68B (+$2.8B)
140% more funds holding in top 10
Funds holding in top 10: 5 → 12 (+7)
94% more repeat investments, than reductions
Existing positions increased: 138 | Existing positions reduced: 71
55.5% more ownership
Funds ownership: 88.38% → 143.88% (+56%)
30% more funds holding
Funds holding: 264 → 342 (+78)
12% more call options, than puts
Call options by funds: $26.2M | Put options by funds: $23.4M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$174M |
| 2 |
BlackRock
New York
|
+$161M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
+$101M |
| 4 |
DSCM
Divisadero Street Capital Management
Miami,
Florida
|
+$90.3M |
| 5 |
Vanguard Capital Management
Malvern,
Pennsylvania
|
+$79.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
-$15.3M |
| 2 |
FCM
Farallon Capital Management
San Francisco,
California
|
-$13.9M |
| 3 |
OCM
Osterweis Capital Management
San Francisco,
California
|
-$13.8M |
| 4 |
MC
Martin & Co
Knoxville,
Tennessee
|
-$10.9M |
| 5 |
Voloridge Investment Management
Jupiter,
Florida
|
-$10.1M |
CECO Hedge Fund Activity: Q2 2026 in Review
342 institutional investors reported a position in Ceco Environmental (CECO) for Q2 2026, worth a combined $4.68B — up 149% from $1.88B a quarter earlier.
Buyers outnumbered sellers: 106 funds opened new CECO positions and 24 closed out — a net gain of 82 holders — while 138 added to existing stakes and 71 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $174M. The largest seller was Marshall Wace, cutting an estimated $15.3M.
- 342 institutional investors held Ceco Environmental (CECO) as of Q2 2026, up from 264 in Q1 2026.
- Funds reported $4.68B of Ceco Environmental stock for Q2 2026, up 149% quarter-over-quarter.
- 106 funds opened new Ceco Environmental positions in Q2 2026 and 24 closed out, a net change of +82 holders.
- The largest Ceco Environmental buyer in Q2 2026 was Fidelity Investments, an estimated $174M added.
- The largest Ceco Environmental seller in Q2 2026 was Marshall Wace, an estimated $15.3M sold.
Based on aggregated 13F filings for Q2 2026.