OneWater Marine Inc.
US ˙ NasdaqGM ˙ US68280L1017

SecurityONEW / OneWater Marine Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership14,678 shares
Latest Disclosed Value $ 158,816
Sei Investments Co ownership in ONEW / OneWater Marine Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 14,678 shares of OneWater Marine Inc. (US:ONEW) valued at $158,816 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 14,678 shares of OneWater Marine Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $159,403 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)
2026-02-13 2025-12-31 13F ONEWATER MARINE CL A COM 68280L101 14,678 0 0.00 159 -31.90 0.0002
2025-11-13 2025-09-30 13F ONEWATER MARINE CL A COM 68280L101 14,678 -6,700 -31.34 232 -18.88 0.0003
2025-08-14 2025-06-30 13F ONEWATER MARINE CL A COM 68280L101 21,378 -232,894 -91.59 286 -93.05 0.0003
2025-05-14 2025-03-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 254,272 24,766 10.79 4,114 3.16 0.0053
2025-05-13 2025-03-31 13F ONEWATER MARINE CL A COM 68280L101 229,506 0 3,989 0.0043
2025-02-11 2024-12-31 13F ONEWATER MARINE CL A COM 68280L101 229,506 28,164 13.99 3,989 -17.16 0.0051
2024-11-12 2024-09-30 13F ONEWATER MARINE CL A COM 68280L101 201,342 11,160 5.87 4,814 -8.18 0.0063
2024-08-13 2024-06-30 13F ONEWATER MARINE CL A COM 68280L101 190,182 2,124 1.13 5,243 -0.94 0.0074
2024-05-07 2024-03-31 13F ONEWATER MARINE CL A COM 68280L101 188,058 -15,092 -7.43 5,294 -22.89 0.0078
2024-02-14 2023-12-31 13F ONEWATER MARINE CL A COM 68280L101 203,150 -6,580 -3.14 6,864 27.75 0.0110
2023-11-14 2023-09-30 13F ONEWATER MARINE CL A COM 68280L101 209,730 11,649 5.88 5,373 -25.15 0.0097
2023-08-11 2023-06-30 13F ONEWATER MARINE CL A COM 68280L101 198,081 2,419 1.24 7,178 31.18 0.0125
2023-05-12 2023-03-31 13F ONEWATER MARINE CL A COM 68280L101 195,662 2,884 1.50 5,473 -0.74 0.0102
2023-02-10 2022-12-31 13F ONEWATER MARINE CL A COM 68280L101 192,778 -471 -0.24 5,513 -5.26 0.0123
2022-11-14 2022-09-30 13F ONEWATER MARINE CL A COM 68280L101 193,249 4,000 2.11 5,819 -6.97 0.0130
2022-08-15 2022-06-30 13F ONEWATER MARINE CL A COM 68280L101 189,249 -6,561 -3.35 6,255 -7.28 0.0135
2022-05-13 2022-03-31 13F ONEWATER MARINE CL A COM 68280L101 195,810 22,871 13.22 6,746 -36.02 0.0136
2022-02-14 2021-12-31 13F ONEWATER MARINE CL A COM 68280L101 172,939 25,647 17.41 10,544 78.02 0.0198
2021-11-12 2021-09-30 13F ONEWATER MARINE CL A COM 68280L101 147,292 20,371 16.05 5,923 11.04 0.0124
2021-08-06 2021-06-30 13F ONEWATER MARINE CL A COM 68280L101 126,921 46,228 57.29 5,334 65.45 0.0118
2021-05-12 2021-03-31 13F ONEWATER MARINE CL A COM 68280L101 80,693 10,585 15.10 3,224 58.12 0.0081
2021-02-08 2020-12-31 13F ONEWATER MARINE CL A COM 68280L101 70,108 32,996 88.91 2,039 168.29 0.0053
2020-12-04 2020-09-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 37,112 16,062 76.30 760 48.73 0.0022
2020-11-06 2020-09-30 13F ONEWATER MARINE CL A COM 68280L101 37,112 16,062 760 1,829.9110
2020-08-17 2020-06-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 21,050 -1,858 -8.11 511 192.00 0.0016
2020-05-14 2020-03-31 13F ONEWATER MARINE CL A COM 68280L101 22,908 22,908 175 0.0006
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.