Oceaneering International, Inc.
US ˙ NYSE ˙ US6752321025

SecurityOII / Oceaneering International, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership33,943 shares
Latest Disclosed Value $ 1,204
Natixis Advisors, L.p. reports 9.32% increase in ownership of OII / Oceaneering International, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 33,943 shares of Oceaneering International, Inc. (US:OII) valued at $1,203,958 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 31,049 shares of Oceaneering International, Inc.. The current value of the position is $1,289,495 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F OCEANEERING INTL COM 675232102 33,943 2,894 9.32 1 0.0017
2026-02-10 2025-12-31 13F OCEANEERING INTL COM 675232102 31,049 -9,619 -23.65 1 -100.00 0.0011
2025-11-13 2025-09-30 13F OCEANEERING INTL INC COM 675232102 40,668 2,824 7.46 1 0.0015
2025-08-13 2025-06-30 13F OCEANEERING INTL COM 675232102 37,844 4,302 12.83 1 0.0012
2025-05-08 2025-03-31 13F OCEANEERING INTL COM 675232102 33,542 -4,386 -11.56 1 0.0014
2025-02-10 2024-12-31 13F OCEANEERING INTL COM 675232102 37,928 1,883 5.22 1 0.0018
2024-11-06 2024-09-30 13F OCEANEERING INTL COM 675232102 36,045 2,657 7.96 1 0.0017
2024-08-01 2024-06-30 13F OCEANEERING INTL COM 675232102 33,388 -4,253 -11.30 1 0.0017
2024-04-25 2024-03-31 13F OCEANEERING INTL COM 675232102 37,641 2,266 6.41 1 0.0020
2024-02-06 2023-12-31 13F OCEANEERING INTL COM 675232102 35,375 1,516 4.48 1 0.0020
2023-11-13 2023-09-30 13F OCEANEERING INTL COM 675232102 33,859 659 1.98 1 0.0027
2023-08-15 2023-06-30 13F OCEANEERING INTL COM 675232102 33,200 106 0.32 1 0.0019
2023-05-11 2023-03-31 13F OCEANEERING INTL COM 675232102 33,094 2,773 9.15 1 0.0020
2023-01-27 2022-12-31 13F OCEANEERING INTL COM 675232102 30,321 30,321 1 0.0020
2022-08-12 2022-06-30 13F OCEANEERING INTL INC COM COM 675232102 0 -20,817 -100.00 0 -100.00
2022-05-12 2022-03-31 13F OCEANEERING INTL INC COM COM 675232102 20,817 20,817 316 0.0012
2021-11-12 2021-09-30 13F OCEANEERING INTL COM 675232102 0 -15,063 -100.00 0 -100.00
2021-08-12 2021-06-30 13F OCEANEERING INTL COM 675232102 15,063 15,063 235 0.0011
2016-05-06 2016-03-31 13F OCEANEERING INTL COM 675232102 0 -80,399 -100.00 0 -100.00
2016-02-12 2015-12-31 13F OCEANEERING INTL COM 675232102 80,399 -27,101 -25.21 3,017 -28.56 0.0495
2015-11-12 2015-09-30 13F OCEANEERING INTL COM 675232102 107,500 5,861 5.77 4,223 -10.83 0.0732
2015-08-14 2015-06-30 13F OCEANEERING INTL COM 675232102 101,639 -2,083 -2.01 4,736 -15.34 0.0804
2015-05-15 2015-03-31 13F OCEANEERING INTL SPONSORED ADR 675232102 103,722 40,472 63.99 5,594 50.38 0.0982
2015-02-05 2014-12-31 13F OCEANEERING INTL COM 675232102 63,250 -5,013 -7.34 3,720 -16.37 0.0696
2014-11-03 2014-09-30 13F OCEANEERING INTL COM 675232102 68,263 -48,197 -41.39 4,448 -51.12 0.0893
2014-08-13 2014-06-30 13F OCEANEERING INTL COM 675232102 116,460 -2,667 -2.24 9,099 6.30 0.1304
2014-05-13 2014-03-31 13F OCEANEERING INTL COM 675232102 119,127 3,448 2.98 8,560 -6.18 0.1317
2014-02-12 2013-12-31 13F OCEANEERING INTL COM 675232102 115,679 -1,693 -1.44 9,124 -4.32 0.1493
2013-10-30 2013-09-30 13F OCEANEERING INTL COM 675232102 117,372 -57,459 -32.87 9,536 -24.45 0.1756
2013-07-19 2013-06-30 13F OCEANEERING INTL COM 675232102 174,831 174,831 12,622 0.2515
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.