ESSEX INVESTMENT MANAGEMENT CO LLC

Position in OII — Oceaneering International Inc

CIK 201772 BOSTON, MA

Position in OII

as of Jun 30, 2026 · filed Aug 6, 2026 Compact

Position Value

$6,137,280

+$519,755 QoQ

Shares Held

151,463

-4.4% QoQ

Ownership

0.152%

of shares outstanding

% of Portfolio

0.83%

of 13F equity value

Holder Rank

#72

of 376 holders

Holding Since

Sep 2023

6 quarters on record

Voting authority Sole 51% Shared 0% None 49%

Energy · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $14,644,204 across 5 Oil & Gas Equipment & Services names. OII ranks #1 (41.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	OII	Oceaneering International Inc This page	151,463	$6,137,280
2	FET	Forum Energy Technologies, Inc.	66,611	$3,345,870
3	BKR	Baker Hughes Co	54,375	$3,017,812
4	XPRO	Expro Ltd	143,490	$2,119,347
5	SLB	Slb Limited/Nv	514	$23,895

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$6,137,280	151,463	-4.4%	Shares	Sole	2026-08-06
2026-03-31	$5,617,525	158,374	+1.9%	Shares	Sole	2026-05-11
2025-12-31	$3,735,079	155,434	-2.4%	Shares	Sole	2026-02-13
2025-09-30	$3,946,487	159,261	+58.7%	Shares	Sole	2025-11-06
2025-06-30	$2,078,961	100,336	+97.9%	Shares	Sole	2025-08-12
2023-09-30	$1,304,004	50,700	—	Shares	Sole	2023-11-09
No filing history on record for this holder in this stock.