Optiver Holding’s Orion OEC Stock Holding History

Optiver Holding’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	$20.6K	Buy	3,177 +2,963	+1,385%	+$17.5K	﹤0.01%	1093
2025 Q4	$1.13K	Hold	214	–	–	﹤0.01%	2195
2025 Q3	$1.62K	Buy	+214	New	+$2.16K	﹤0.01%	2432

Other funds holding OEC

Pzena Investment Management New York $30.8B AUM 11.29% 1-Year Est. Return

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

DCM

Divisar Capital Management San Francisco, California $392M AUM 108.45% 1-Year Est. Return

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

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

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

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Optiver Holding's OEC Position: Q1 2026 in Review

Optiver Holding increased its Orion (OEC) stake by 1,385% in Q1 2026, buying an estimated $17.5K and bringing the position to 3,177 shares worth $20.6K. The position accounts for ﹤0.01% of the portfolio, ranked #1093.

Optiver Holding first reported a position in OEC in Q3 2025 and has held it in 3 quarters since. 180 funds tracked by Wall St. Rank hold OEC as of Q1 2026.

Optiver Holding held 3,177 shares of Orion worth $20.6K as of Q1 2026.
Optiver Holding bought 2,963 Orion shares in Q1 2026, an estimated $17.5K.
Orion made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1093 holding.
Optiver Holding first reported a position in Orion in Q3 2025 and has held it in 3 quarters since.
180 funds tracked by Wall St. Rank held Orion as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.