PEAK6’s Ceco Environmental CECO Stock Holding History

PEAK6’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
2025 Q4	–	Sell	-6,500	Closed	-$333K	–	2888
2025 Q3	$333K	Hold	6,500	–	–	﹤0.01%	2300
2025 Q2	$184K	Buy	+6,500	New	+$162K	﹤0.01%	2479

Other funds holding CECO

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Luther King Capital Management (LKCM) Fort Worth, Texas $23.1B AUM 21.31% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

PEAK6's CECO Position: Q4 2025 in Review

PEAK6 sold out of Ceco Environmental (CECO) in Q4 2025, closing a stake of 56 shares — an estimated $2.87K sold.

PEAK6 first reported a position in CECO in Q3 2025 and held it in 1 quarter. The position peaked at $2.87K in Q3 2025. 230 funds tracked by Wall St. Rank hold CECO as of Q4 2025.

PEAK6 reported no remaining Ceco Environmental position as of Q4 2025 after selling out during the quarter.
PEAK6 sold 56 Ceco Environmental shares in Q4 2025, an estimated $2.87K.
PEAK6 first reported a position in Ceco Environmental in Q3 2025 and held it in 1 quarter.
PEAK6's Ceco Environmental position peaked at $2.87K in Q3 2025.
230 funds tracked by Wall St. Rank held Ceco Environmental as of Q4 2025.

Based on PEAK6's 13F filing for Q4 2025, filed 13 Feb 2026.