SIMPLEX TRADING, LLC

Position in OII — Oceaneering International Inc

CIK 1488542 CHICAGO, IL

Position in OII

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$600,587

+$444,732 QoQ

Shares Held

14,822

+237.3% QoQ

Ownership

0.015%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#202

of 376 holders

Holding Since

Mar 2020

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Energy · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $7,675,213 across 24 Oil & Gas Equipment & Services names. OII ranks #4 (7.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LBRT	Liberty Energy Inc.	97,406	$2,551,063
2	KGS	Kodiak Gas Services, Inc.	11,387	$855,505
3	PUMP	ProPetro Holding Corp.	54,889	$787,108
4	OII	Oceaneering International Inc This page	14,822	$600,587
5	WTTR	Select Water Solutions, Inc.	23,996	$479,440
6	TDW	Tidewater Inc	6,667	$444,222
7	NOV	NOV Inc.	23,905	$443,437
8	AROC	Archrock, Inc.	9,134	$371,845

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$600,587	14,822	+237.3%	Shares	Sole	2026-08-12
2026-03-31	$155,855	4,394	+35.7%	Shares	Sole	2026-05-14
2025-12-31	$77,785	3,237	+3105.0%	Shares	Sole	2026-02-11
2025-09-30	$2	101	-99.1%	Shares	Sole	2025-11-12
2022-09-30	$84,893	10,665	+679.0%	Shares	Sole	2022-11-04
2021-12-31	$15,483	1,369	-93.5%	Shares	Sole	2022-02-23
2021-09-30	$281,078	21,102	0.0%	Shares	Sole	2021-10-28
2021-06-30	$328,558	21,102	+123.0%	Shares	Sole	2021-08-12
2020-12-31	$75,214	9,461	-38.9%	Shares	Sole	2021-02-02
2020-09-30	$54,479	15,477	+5.3%	Shares	Sole	2020-10-14
2020-06-30	$93,945	14,702	+1431.5%	Shares	Sole	2020-07-13
2020-03-31	$2,822	960	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.