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Round Rock Advisors LLC

Position in OII — Oceaneering International Inc

CIK 1846991 WILTON, CT

Position in OII

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$812,669
+$198,613 QoQ
Shares Held
20,056
+15.9% QoQ
Ownership
0.020%
of shares outstanding
% of Portfolio
0.22%
of 13F equity value
Holder Rank
#174
of 376 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in OII Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Equipment & Services

Energy · as of Jun 30, 2026

Round Rock Advisors LLC holds $9,166,101 across 10 Oil & Gas Equipment & Services names. OII ranks #6 (8.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 OII
Oceaneering International Inc
This page
20,056 $812,669

All Filings in OII

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4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $812,669 20,056
2026-03-31 $614,056 17,312
2025-12-31 $273,317 11,374
2025-09-30 $281,847 11,374