Jane Street’s Oceaneering OII Stock Holding History

Jane Street’s Portfolio OII Stock Details OII Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$284K	Buy	+7,000	New	+$264K	﹤0.01%	9334
2026 Q1	–	Sell	-19,700	Closed	-$473K	–	12587
2025 Q4	$473K	Sell	19,700 -700	-3%	-$16.9K	﹤0.01%	7819
2025 Q3	$506K	Buy	+20,400	New	+$468K	﹤0.01%	7837
2024 Q1	–	Sell	-21,100	Closed	-$449K	–	9830
2023 Q4	$449K	Sell	21,100 -2,600	-11%	-$57.6K	﹤0.01%	6946
2023 Q3	$610K	Buy	+23,700	New	+$541K	﹤0.01%	5977
2020 Q4	–	Sell	-10,000	Closed	-$35K	–	7929
2020 Q3	$35K	Buy	+10,000	New	+$52.8K	﹤0.01%	6970
2018 Q4	–	Sell	-435,500	Closed	-$12M	–	5476
2018 Q3	$12M	Hold	435,500	–	–	0.02%	503
2018 Q2	$11.1M	Hold	435,500	–	–	0.03%	557
2018 Q1	$8.07M	Buy	+435,500	New	+$8.73M	0.02%	648

Other funds holding OII

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return

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

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

MSIIA

Morgan Stanley Institutional Investment Advisors Greenwood Village, Colorado $1.07B AUM 29.17% 1-Year Est. Return

Jane Street's OII Position: Q2 2026 in Review

Jane Street sold out of Oceaneering (OII) in Q2 2026, closing a stake of 41,029 shares — an estimated $1.55M sold.

Jane Street first reported a position in OII in Q2 2013 and held it in 35 quarters. The position peaked at $4.45M in Q2 2025. 376 funds tracked by Wall St. Rank hold OII as of Q2 2026.

Jane Street reported no remaining Oceaneering position as of Q2 2026 after selling out during the quarter.
Jane Street sold 41,029 Oceaneering shares in Q2 2026, an estimated $1.55M.
Jane Street first reported a position in Oceaneering in Q2 2013 and held it in 35 quarters.
Jane Street's Oceaneering position peaked at $4.45M in Q2 2025.
376 funds tracked by Wall St. Rank held Oceaneering as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.