Group One Trading’s Ceco Environmental CECO Stock Holding History

Group One Trading’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
2021 Q3	–	Sell	-8,000	Closed	-$57K	–	8207
2021 Q2	$57K	Buy	8,000 +6,000	+300%	+$46.4K	﹤0.01%	6457
2021 Q1	$16K	Buy	+2,000	New	+$15.8K	﹤0.01%	6843
2020 Q1	–	Sell	-30,000	Closed	-$230K	–	5304
2019 Q4	$230K	Sell	30,000 -55,300	-65%	-$413K	﹤0.01%	3074
2019 Q3	$596K	Buy	85,300 +36,000	+73%	+$288K	﹤0.01%	2182
2019 Q2	$473K	Buy	+49,300	New	+$422K	﹤0.01%	2184
2018 Q2	–	Sell	-3,800	Closed	-$17K	–	5118
2018 Q1	$17K	Sell	3,800 -3,500	-48%	-$16.4K	﹤0.01%	4142
2017 Q4	$37K	Buy	+7,300	New	+$49.1K	﹤0.01%	3877
2016 Q1	–	Sell	-3,300	Closed	-$25K	–	4584
2015 Q4	$25K	Hold	3,300	–	–	﹤0.01%	3798
2015 Q3	$27K	Buy	+3,300	New	+$30.9K	﹤0.01%	3896
2014 Q2	–	Sell	-1,000	Closed	-$17K	–	5184
2014 Q1	$17K	Sell	1,000 -2,000	-67%	-$32.9K	﹤0.01%	4329
2013 Q4	$49K	Buy	+3,000	New	+$48.5K	﹤0.01%	3635

Other funds holding CECO

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

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 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 Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Group One Trading's CECO Position: Q2 2026 in Review

Group One Trading sold out of Ceco Environmental (CECO) in Q2 2026, closing a stake of 361 shares — an estimated $28.5K sold.

Group One Trading first reported a position in CECO in Q4 2013 and held it in 23 quarters. The position peaked at $199K in Q4 2025. 343 funds tracked by Wall St. Rank hold CECO as of Q2 2026.

Group One Trading reported no remaining Ceco Environmental position as of Q2 2026 after selling out during the quarter.
Group One Trading sold 361 Ceco Environmental shares in Q2 2026, an estimated $28.5K.
Group One Trading first reported a position in Ceco Environmental in Q4 2013 and held it in 23 quarters.
Group One Trading's Ceco Environmental position peaked at $199K in Q4 2025.
343 funds tracked by Wall St. Rank held Ceco Environmental as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.