CenterBook Partners’s Orion OEC Stock Holding History

CenterBook Partners’s Portfolio OEC Stock Details OEC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-378,517	Closed	-$2M	–	738
2025 Q4	$2M	Sell	378,517 -24,199	-6%	-$131K	0.1%	266
2025 Q3	$3.05M	Buy	402,716 +108,623	+37%	+$1.1M	0.15%	193
2025 Q2	$3.09M	Buy	294,093 +103,021	+54%	+$1.16M	0.17%	156
2025 Q1	$2.47M	Sell	191,072 -144,686	-43%	-$2.05M	0.16%	168
2024 Q4	$5.3M	Buy	+335,758	New	+$5.67M	0.32%	92

Other funds holding OEC

Pzena Investment Management New York $34.1B AUM 23.81% 1-Year Est. Return

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

DCM

Divisar Capital Management San Francisco, California $434M AUM 170.22% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

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

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

CenterBook Partners's OEC Position: Q1 2026 in Review

CenterBook Partners sold out of Orion (OEC) in Q1 2026, closing a stake of 378,517 shares — an estimated $2M sold.

CenterBook Partners first reported a position in OEC in Q4 2024 and held it in 5 quarters. The position peaked at $5.3M in Q4 2024. 181 funds tracked by Wall St. Rank hold OEC as of Q1 2026.

CenterBook Partners reported no remaining Orion position as of Q1 2026 after selling out during the quarter.
CenterBook Partners sold 378,517 Orion shares in Q1 2026, an estimated $2M.
CenterBook Partners first reported a position in Orion in Q4 2024 and held it in 5 quarters.
CenterBook Partners's Orion position peaked at $5.3M in Q4 2024.
181 funds tracked by Wall St. Rank held Orion as of Q1 2026.

Based on CenterBook Partners's 13F filing for Q1 2026, filed 5 May 2026.