Mariner
OII icon

Mariner’s Oceaneering OII Stock Holding History

Mariner’s Portfolio OII Stock Details OII Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.12M Sell
27,542
-4,668
-14% -$176K ﹤0.01% 1846
2026
Q1 		$1.14M Buy
32,210
+930
+3% +$30.1K ﹤0.01% 1873
2025
Q4 		$752K Buy
31,280
+7,515
+32% +$182K ﹤0.01% 2156
2025
Q3 		$589K Buy
23,765
+1,335
+6% +$30.6K ﹤0.01% 2301
2025
Q2 		$465K Buy
22,430
+4,228
+23% +$81.5K ﹤0.01% 2389
2025
Q1 		$397K Buy
18,202
+397
+2% +$9.42K ﹤0.01% 2389
2024
Q4 		$464K Buy
17,805
+2,030
+13% +$53.7K ﹤0.01% 2255
2024
Q3 		$392K Buy
15,775
+2,431
+18% +$62.6K ﹤0.01% 2347
2024
Q2 		$316K Sell
13,344
-215
-2% -$4.97K ﹤0.01% 2412
2024
Q1 		$317K Buy
13,559
+177
+1% +$3.71K ﹤0.01% 2392
2023
Q4 		$285K Buy
13,382
+71
+0.5% +$1.57K ﹤0.01% 2393
2023
Q3 		$342K Buy
13,311
+1,088
+9% +$24.8K ﹤0.01% 2038
2023
Q2 		$229K Sell
12,223
-195
-2% -$3.36K ﹤0.01% 2352
2023
Q1 		$219K Sell
12,418
-1,711
-12% -$33K ﹤0.01% 2343
2022
Q4 		$247K Sell
14,129
-2,959
-17% -$39.3K ﹤0.01% 2191
2022
Q3 		$136K Buy
+17,088
New +$161K ﹤0.01% 2137

Other funds holding OII

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
MSIIA
Morgan Stanley Institutional Investment Advisors Greenwood Village, Colorado $1.07B AUM 29.17% 1-Year Est. Return

Mariner's OII Position: Q2 2026 in Review

Mariner reduced its Oceaneering (OII) stake by 14% in Q2 2026, selling an estimated $176K and leaving 27,542 shares worth $1.12M. The position accounts for ﹤0.01% of the portfolio, ranked #1846.

Mariner first reported a position in OII in Q3 2022 and has held it in 16 quarters since. The position peaked at $1.14M in Q1 2026. 377 funds tracked by Wall St. Rank hold OII as of Q2 2026.

  • Mariner held 27,542 shares of Oceaneering worth $1.12M as of Q2 2026.
  • Mariner sold 4,668 Oceaneering shares in Q2 2026, an estimated $176K.
  • Oceaneering made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1846 holding.
  • Mariner first reported a position in Oceaneering in Q3 2022 and has held it in 16 quarters since.
  • Mariner's Oceaneering position peaked at $1.14M in Q1 2026.
  • 377 funds tracked by Wall St. Rank held Oceaneering as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.