SEACOR Marine Holdings Inc.
DE ˙ DB ˙ US78413P1012
6,10 € ↓ -0,30 (-4,69%)
2026-06-04
DEL PRIS
SecurityDE:SQZ / SEACOR Marine Holdings Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership195,091 shares
Latest Disclosed Value $ 1,396,851
Northern Trust Corp reports 6.62% increase in ownership of SQZ / SEACOR Marine Holdings Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 195,091 shares of SEACOR Marine Holdings Inc. (DE:SQZ) valued at $1,258,337 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 182,973 shares of SEACOR Marine Holdings Inc.. This represents a change in shares of 6.62% during the quarter. The current value of the position is $1,190,055 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)
2026-05-14 2026-03-31 13F SEACOR MARINE HLDGS COM 78413P101 195,091 12,118 6.62 1,397 26.79 0.0000
2026-02-17 2025-12-31 13F SEACOR MARINE HLDGS COM 78413P101 182,973 -9,847 -5.11 1,101 -11.99 0.0000
2025-11-14 2025-09-30 13F SEACOR MARINE HLDGS COM 78413P101 192,820 -13,449 -6.52 1,251 19.03 0.0002
2025-08-13 2025-06-30 13F SEACOR MARINE HLDGS COM 78413P101 206,269 -25,239 -10.90 1,052 -10.25 0.0001
2025-05-13 2025-03-31 13F SEACOR MARINE HLDGS COM 78413P101 231,508 -7,070 -2.96 1,171 -25.18 0.0002
2025-02-14 2024-12-31 13F SEACOR MARINE HLDGS COM 78413P101 238,578 8,552 3.72 1,565 -29.47 0.0002
2024-11-13 2024-09-30 13F SEACOR MARINE HLDGS COM 78413P101 230,026 2,132 0.94 2,220 -27.81 0.0004
2024-08-14 2024-06-30 13F SEACOR MARINE HLDGS COM 78413P101 227,894 -8,209 -3.48 3,074 -6.59 0.0005
2024-05-14 2024-03-31 13F SEACOR MARINE HLDGS COM 78413P101 236,103 985 0.42 3,291 11.18 0.0006
2024-02-13 2023-12-31 13F SEACOR MARINE HLDGS COM 78413P101 235,118 6,485 2.84 2,960 -6.71 0.0005
2023-11-13 2023-09-30 13F SEACOR MARINE HLDGS COM 78413P101 228,633 2,787 1.23 3,173 22.94 0.0006
2023-08-11 2023-06-30 13F SEACOR MARINE HLDGS COM 78413P101 225,846 165,125 271.94 2,581 458.66 0.0005
2023-05-15 2023-03-31 13F SEACOR MARINE HLDGS COM 78413P101 60,721 1,196 2.01 462 -15.23 0.0001
2023-02-13 2022-12-31 13F SEACOR MARINE HLDGS COM 78413P101 59,525 -131 -0.22 545 62.69 0.0001
2022-11-14 2022-09-30 13F SEACOR MARINE HLDGS COM 78413P101 59,656 1,359 2.33 335 -0.30 0.0001
2022-08-12 2022-06-30 13F SEACOR MARINE HLDGS COM 78413P101 58,297 2,096 3.73 336 -25.99 0.0001
2022-05-13 2022-03-31 13F SEACOR MARINE HLDGS COM 78413P101 56,201 2,844 5.33 454 150.83 0.0001
2022-02-08 2021-12-31 13F SEACOR MARINE HLDGS COM 78413P101 53,357 3,390 6.78 181 -21.65 0.0000
2021-11-15 2021-09-30 13F SEACOR MARINE HLDGS COM 78413P101 49,967 34 0.07 231 5.00 0.0000
2021-08-13 2021-06-30 13F SEACOR MARINE HLDGS COM 78413P101 49,933 25 0.05 220 -17.29 0.0000
2021-05-12 2021-03-31 13F SEACOR MARINE HLDGS COM 78413P101 49,908 -7,426 -12.95 266 71.61 0.0000
2021-02-11 2020-12-31 13F SEACOR MARINE HLDGS COM 78413P101 57,334 -4,733 -7.63 155 23.02 0.0000
2020-11-16 2020-09-30 13F SEACOR MARINE HLDGS COM 78413P101 62,067 -15,294 -19.77 126 -36.04 0.0000
2020-08-14 2020-06-30 13F SEACOR MARINE HLDGS COM 78413P101 77,361 -187,413 -70.78 197 -83.02 0.0000
2020-05-14 2020-03-31 13F SEACOR MARINE HLDGS COM 78413P101 264,774 8,416 3.28 1,160 -67.19 0.0003
2020-02-14 2019-12-31 13F SEACOR MARINE HLDGS COM 78413P101 256,358 5,505 2.19 3,535 12.08 0.0008
2019-11-13 2019-09-30 13F SEACOR MARINE HLDGS COM 78413P101 250,853 38,129 17.92 3,154 -0.88 0.0008
2019-08-13 2019-06-30 13F SEACOR MARINE HLDGS COM 78413P101 212,724 8,525 4.17 3,182 17.11 0.0008
2019-05-13 2019-03-31 13F SEACOR MARINE HLDGS COM 78413P101 204,199 -6,823 -3.23 2,717 9.47 0.0007
2019-02-12 2018-12-31 13F SEACOR MARINE HLDGS COM 78413P101 211,022 -638 -0.30 2,482 -48.18 0.0007
2018-11-14 2018-09-30 13F SEACOR MARINE HLDGS COM 78413P101 211,660 14,866 7.55 4,790 5.41 0.0012
2018-09-18 2018-06-30 13F/A-1 SEACOR MARINE HLDGS COM 78413P101 196,794 8,829 4.70 4,544 27.10 0.0012
2018-08-14 2018-06-30 13F SEACOR MARINE HLDGS COM 78413P101 189,066 1,101 4,366
2018-05-09 2018-03-31 13F SEACOR MARINE HLDGS COM 78413P101 187,965 -12,524 -6.25 3,575 52.39 0.0009
2018-02-14 2017-12-31 13F SEACOR MARINE HLDGS COM 78413P101 200,489 -132,670 -39.82 2,346 -54.98 0.0006
2017-11-13 2017-09-30 13F SEACOR MARINE HLDGS COM 78413P101 333,159 6,001 1.83 5,211 -21.77 0.0014
2017-08-11 2017-06-30 13F SEACOR MARINE HLDGS COM 78413P101 327,158 327,158 6,661 0.0019
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.