Mario Gabelli's OII Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 338,298 shares of Oceaneering International, Inc. (OII) worth $12 M, representing 0.12% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 52 quarters.
Based on 13F filings since 2013, Mario Gabelli has maintained a long-term strategic position in OII, representing a significant commitment to this investment thesis. Largest addition occurred in Q3 2022, adding 61,050 shares. Largest reduction occurred in Q3 2024, reducing 80,350 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Oceaneering International (OII) Holding Value Over Time
Track share changes against reported price movement
Quarterly Oceaneering International (OII) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -3,542 | Reduce 1.04% | 338,298 | $35.47 |
| Q4 2025 | +35,400 | Add 11.55% | 341,840 | $24.03 |
| Q3 2025 | -44,000 | Reduce 12.56% | 306,440 | $24.78 |
| Q2 2025 | -19,750 | Reduce 5.34% | 350,440 | $20.72 |
| Q1 2025 | -850 | Reduce 0.23% | 370,190 | $21.81 |
| Q4 2024 | +26,750 | Add 7.77% | 371,040 | $26.08 |
| Q3 2024 | -80,350 | Reduce 18.92% | 344,290 | $24.87 |
| Q2 2024 | -17,000 | Reduce 3.85% | 424,640 | $23.66 |
| Q1 2024 | +1,265 | Add 0.29% | 441,640 | $23.40 |
| Q4 2023 | -7,600 | Reduce 1.70% | 440,375 | $21.28 |
| Q3 2023 | -12,825 | Reduce 2.78% | 447,975 | $25.72 |
| Q2 2023 | +30,300 | Add 7.04% | 460,800 | $18.70 |
| Q1 2023 | -2,200 | Reduce 0.51% | 430,500 | $17.63 |
| Q4 2022 | +1,900 | Add 0.44% | 432,700 | $17.49 |
| Q3 2022 | +61,050 | Add 16.51% | 430,800 | $7.96 |
| Q2 2022 | +2,800 | Add 0.76% | 369,750 | $10.68 |
| Q4 2021 | +37,450 | Add 11.37% | 366,950 | $11.31 |
| Q3 2021 | +18,000 | Add 5.78% | 329,500 | $13.32 |
| Q2 2021 | +36,733 | Add 13.37% | 311,500 | $15.57 |
| Q1 2021 | +2,000 | Add 0.73% | 274,767 | $11.42 |
| Q4 2020 | -30,620 | Reduce 10.09% | 272,767 | $7.95 |
| Q3 2020 | -42,880 | Reduce 12.38% | 303,387 | $3.52 |
| Q2 2020 | +32,500 | Add 10.36% | 346,267 | $6.39 |
| Q1 2020 | +18,200 | Add 6.16% | 313,767 | $2.94 |
| Q4 2019 | -1,267 | Reduce 0.43% | 295,567 | $14.91 |
| Q3 2019 | -30,700 | Reduce 9.37% | 296,834 | $13.55 |
| Q2 2019 | -2,250 | Reduce 0.68% | 327,534 | $20.39 |
| Q1 2019 | -400 | Reduce 0.12% | 329,784 | $15.77 |
| Q4 2018 | -1,100 | Reduce 0.33% | 330,184 | $12.10 |
| Q3 2018 | -26,500 | Reduce 7.41% | 331,284 | $27.60 |
| Q2 2018 | -2,800 | Reduce 0.78% | 357,784 | $25.46 |
| Q1 2018 | -31,700 | Reduce 8.08% | 360,584 | $18.54 |
| Q4 2017 | -2,900 | Reduce 0.73% | 392,284 | $21.14 |
| Q3 2017 | +300 | Add 0.08% | 395,184 | $26.27 |
| Q4 2016 | -1,700 | Reduce 0.43% | 394,884 | $28.21 |
| Q3 2016 | -3,300 | Reduce 0.83% | 396,584 | $27.51 |
| Q2 2016 | -2,100 | Reduce 0.52% | 399,884 | $29.86 |
| Q1 2016 | -100 | Reduce 0.02% | 401,984 | $33.24 |
| Q4 2015 | -7,400 | Reduce 1.81% | 402,084 | $37.52 |
| Q3 2015 | -20,000 | Reduce 4.66% | 409,484 | $39.28 |
| Q2 2015 | -20,900 | Reduce 4.64% | 429,484 | $46.59 |
| Q1 2015 | -6,550 | Reduce 1.43% | 450,384 | $53.93 |
| Q4 2014 | -28,200 | Reduce 5.81% | 456,934 | $58.81 |
| Q3 2014 | -5,800 | Reduce 1.18% | 485,134 | $65.17 |
| Q2 2014 | -1,566 | Reduce 0.32% | 490,934 | $78.13 |
| Q1 2014 | -11,100 | Reduce 2.20% | 492,500 | $71.86 |
| Q4 2013 | -11,500 | Reduce 2.23% | 503,600 | $78.88 |
| Q3 2013 | -8,600 | Reduce 1.64% | 515,100 | $81.24 |
| Q2 2013 | +523,700 | Add 0.00% | 523,700 | $72.20 |
Mario Gabelli's Oceaneering International Investment FAQs
Mario Gabelli first purchased Oceaneering International, Inc. (OII) in Q2 2013, acquiring 523,700 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Oceaneering International, Inc. (OII) for 52 quarters since Q2 2013.
Mario Gabelli's largest addition to Oceaneering International, Inc. (OII) was in Q2 2013, adding 523,700 shares worth $37.81 M.
According to the latest 13F filing for Q1 2026, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 338,298 shares of Oceaneering International, Inc. (OII), valued at approximately $12 M.
As of the Q1 2026 filing, Oceaneering International, Inc. (OII) represents approximately 0.12% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Oceaneering International, Inc. (OII) was 523,700 shares, as reported at the end of Q2 2013.