Oceaneering International, Inc.
US ˙ NYSE ˙ US6752321025

SecurityOII / Oceaneering International, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership162,900 shares
Latest Disclosed Value $ 3,375,288
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 5.49% decrease in ownership of OII / Oceaneering International, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 162,900 shares of Oceaneering International, Inc. (US:OII) valued at $3,375,288 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 172,360 shares of Oceaneering International, Inc.. This represents a change in shares of -5.49% during the quarter. The current value of the position is $6,051,735 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.

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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)
2025-08-26 2025-06-30 NP Oceaneering International EC US6752321025 162,900 -9,460 -5.49 3,375 -10.22 0.0758
2025-05-28 2025-03-31 NP Oceaneering International EC US6752321025 172,360 1,922 1.13 3,759 -15.43 0.0902
2025-02-25 2024-12-31 NP Oceaneering International EC US6752321025 170,438 -27,735 -14.00 4,445 -9.80 0.0971
2024-11-26 2024-09-30 NP Oceaneering International EC US6752321025 198,173 8,780 4.64 4,929 9.98 0.0932
2024-08-26 2024-06-30 NP Oceaneering International EC US6752321025 189,393 11,861 6.68 4,481 7.87 0.0913
2024-05-28 2024-03-31 NP Oceaneering International EC US6752321025 177,532 -5,568 -3.04 4,154 6.62 0.0867
2024-02-26 2023-12-31 NP Oceaneering International EC US6752321025 183,100 12,581 7.38 3,896 -11.15 0.0832
2023-11-28 2023-09-30 NP Oceaneering International EC US6752321025 170,519 -3,285 -1.89 4,386 34.92 0.1144
2023-08-25 2023-06-30 NP Oceaneering International EC US6752321025 173,804 13,606 8.49 3,250 15.08 0.0771
2023-05-26 2023-03-31 NP Oceaneering International EC US6752321025 160,198 2,384 1.51 2,824 2.32 0.0752
2023-02-24 2022-12-31 NP Oceaneering International EC US6752321025 157,814 -3,296 -2.05 2,760 115.29 0.0759
2022-11-25 2022-09-30 NP Oceaneering International EC US6752321025 161,110 0 0.00 1,282 -25.47 0.0367
2022-08-25 2022-06-30 NP Oceaneering International EC US6752321025 161,110 6,303 4.07 1,721 -26.68 0.0475
2022-05-26 2022-03-31 NP Oceaneering International EC US6752321025 154,807 3,771 2.50 2,347 37.35 0.0547
2022-02-25 2021-12-31 NP Oceaneering International EC US6752321025 151,036 0 0.00 1,708 -15.07 0.0370
2021-11-24 2021-09-30 NP Oceaneering International EC US6752321025 151,036 0 0.00 2,012 -14.46 0.0443
2021-08-26 2021-06-30 NP Oceaneering International EC US6752321025 151,036 0 0.00 2,352 36.37 0.0504
2021-05-27 2021-03-31 NP Oceaneering International EC US6752321025 151,036 0 0.00 1,725 43.67 0.0391
2021-02-25 2020-12-31 NP Oceaneering International EC US6752321025 151,036 -15,640 -9.38 1,201 104.78 0.0308
2020-11-25 2020-09-30 NP Oceaneering International EC US6752321025 166,676 0 0.00 587 -44.98 0.0188
2020-08-27 2020-06-30 NP Oceaneering International EC US6752321025 166,676 5,280 3.27 1,065 124.68 0.0348
2020-06-01 2020-03-31 NP Oceaneering International EC US6752321025 161,396 7,613 4.95 475 -79.32 0.0194
2020-02-27 2019-12-31 NP Oceaneering International EC 675232102 153,783 -553 -0.36 2,293 9.61 0.0689
2019-11-27 2019-09-30 NP Oceaneering International EC US6752321025 154,336 154,336 2,091 0.0691
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.