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Oberweis Asset Management’s Ceco Environmental CECO Stock Holding History

Oberweis Asset Management’s Portfolio CECO Stock Details CECO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$32.5M Buy
358,072
+223,040
+165% +$17.6M 0.67% 53
2026
Q1 		$8.05M Sell
135,032
-10,476
-7% -$674K 0.24% 126
2025
Q4 		$8.71M Buy
145,508
+53,500
+58% +$2.86M 0.32% 116
2025
Q3 		$4.71M Buy
+92,008
New +$3.89M 0.18% 149
2024
Q4 		– Sell
-201,400
Closed -$5.68M – 205
2024
Q3 		$5.68M Sell
201,400
-193,300
-49% -$5.44M 0.29% 127
2024
Q2 		$11.4M Sell
394,700
-68,700
-15% -$1.66M 0.7% 50
2024
Q1 		$10.7M Buy
463,400
+36,700
+9% +$756K 0.77% 49
2023
Q4 		$8.65M Buy
426,700
+10,000
+2% +$182K 0.81% 24
2023
Q3 		$6.65M Buy
416,700
+24,100
+6% +$330K 0.71% 33
2023
Q2 		$5.25M Buy
392,600
+170,000
+76% +$2.11M 0.64% 41
2023
Q1 		$3.11M Buy
222,600
+40,500
+22% +$573K 0.48% 60
2022
Q4 		$2.13M Buy
182,100
+24,900
+16% +$282K 0.45% 64
2022
Q3 		$1.39M Buy
+157,200
New +$1.35M 0.33% 72

Other funds holding CECO

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
DSCM
Divisadero Street Capital Management Miami, Florida $4.41B AUM 90.53% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Oberweis Asset Management's CECO Position: Q2 2026 in Review

Oberweis Asset Management increased its Ceco Environmental (CECO) stake by 165% in Q2 2026, buying an estimated $17.6M and bringing the position to 358,072 shares worth $32.5M. The position accounts for 0.67% of the portfolio, ranked #53.

Oberweis Asset Management first reported a position in CECO in Q3 2022 and has held it in 13 quarters since. 343 funds tracked by Wall St. Rank hold CECO as of Q2 2026.

  • Oberweis Asset Management held 358,072 shares of Ceco Environmental worth $32.5M as of Q2 2026.
  • Oberweis Asset Management bought 223,040 Ceco Environmental shares in Q2 2026, an estimated $17.6M.
  • Ceco Environmental made up 0.67% of Oberweis Asset Management's portfolio in Q2 2026, its #53 holding.
  • Oberweis Asset Management first reported a position in Ceco Environmental in Q3 2022 and has held it in 13 quarters since.
  • 343 funds tracked by Wall St. Rank held Ceco Environmental as of Q2 2026.

Based on Oberweis Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.