PDT Partners’s Orion OEC Stock Holding History

PDT 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 Q2	$476K	Buy	+71,870	New	+$517K	0.03%	404
2024 Q3	–	Sell	-36,815	Closed	-$808K	–	794
2024 Q2	$808K	Buy	+36,815	New	+$886K	0.08%	379
2023 Q4	–	Sell	-45,722	Closed	-$973K	–	632
2023 Q3	$973K	Hold	45,722	–	–	0.12%	289
2023 Q2	$970K	Buy	+45,722	New	+$1.1M	0.13%	256
2018 Q2	–	Sell	-202,800	Closed	-$5.5M	–	558
2018 Q1	$5.5M	Buy	202,800 +53,400	+36%	+$1.49M	0.19%	156
2017 Q4	$3.83M	Buy	149,400 +23,600	+19%	+$558K	0.11%	223
2017 Q3	$2.82M	Buy	125,800 +88,800	+240%	+$1.9M	0.09%	244
2017 Q2	$738K	Buy	37,000 +15,400	+71%	+$292K	0.03%	369
2017 Q1	$443K	Buy	21,600 +11,100	+106%	+$228K	0.02%	395
2016 Q4	$198K	Hold	10,500	–	–	0.01%	470
2016 Q3	$197K	Sell	10,500 -1,600	-13%	-$28K	0.01%	440
2016 Q2	$192K	Buy	+12,100	New	+$182K	0.02%	400
2015 Q3	–	Sell	-21,733	Closed	-$401K	–	1477
2015 Q2	$401K	Buy	21,733 +5,797	+36%	+$114K	0.01%	1044
2015 Q1	$287K	Buy	+15,936	New	+$271K	0.01%	1170

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

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 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

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

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

PDT Partners's OEC Position: Q2 2026 in Review

PDT Partners opened a new position in Orion (OEC) in Q2 2026: 71,870 shares worth $476K. The stake represents 0.03% of the portfolio and ranks #404 among its holdings. This is a return to the name: PDT Partners previously reported a position in OEC as recently as Q2 2024.

PDT Partners first reported a position in OEC in Q1 2015 and has held it in 14 quarters since. The position peaked at $5.5M in Q1 2018. 187 funds tracked by Wall St. Rank hold OEC as of Q2 2026.

PDT Partners held 71,870 shares of Orion worth $476K as of Q2 2026.
Orion was a new PDT Partners position in Q2 2026.
Orion made up 0.03% of PDT Partners's portfolio in Q2 2026, its #404 holding.
PDT Partners first reported a position in Orion in Q1 2015 and has held it in 14 quarters since.
PDT Partners's Orion position peaked at $5.5M in Q1 2018.
187 funds tracked by Wall St. Rank held Orion as of Q2 2026.

Based on PDT Partners's 13F filing for Q2 2026, filed 14 Aug 2026.