OneWater Marine Inc.
US ˙ NasdaqGM ˙ US68280L1017

SecurityONEW / OneWater Marine Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership44,089 shares
Latest Disclosed Value $ 416,642
Morgan Stanley reports 27.12% increase in ownership of ONEW / OneWater Marine Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 44,089 shares of OneWater Marine Inc. (US:ONEW) valued at $416,641 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 34,683 shares of OneWater Marine Inc.. This represents a change in shares of 27.12% during the quarter. The current value of the position is $478,807 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)
2026-05-15 2026-03-31 13F ONEWATER MARINE CL A COM 68280L101 44,089 9,406 27.12 417 10.93 0.0000
2026-05-27 2025-12-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 34,683 -6,439 -15.66 375 -42.40 0.0000
2026-02-13 2025-12-31 13F ONEWATER MARINE CL A COM 68280L101 34,683 -6,439 375 0.0000
2026-05-27 2025-09-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 41,122 17,496 74.05 651 106.01 0.0000
2025-11-14 2025-09-30 13F ONEWATER MARINE CL A COM 68280L101 41,122 17,496 651 0.0000
2025-08-15 2025-06-30 13F ONEWATER MARINE CL A COM 68280L101 23,626 1,190 5.30 316 -12.95 0.0000
2025-05-15 2025-03-31 13F ONEWATER MARINE CL A COM 68280L101 22,436 -11,616 -34.11 363 -38.58 0.0000
2025-05-15 2024-12-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 34,052 -15,202 -30.86 592 -49.79 0.0000
2025-02-14 2024-12-31 13F ONEWATER MARINE CL A COM 68280L101 34,052 -15,202 592 0.0000
2025-05-14 2024-09-30 13F/A-2 ONEWATER MARINE CL A COM 68280L101 49,254 4,328 9.63 1,178 -4.93 0.0001
2025-02-14 2024-09-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 49,254 4,328 1,178 0.0001
2024-11-14 2024-09-30 13F ONEWATER MARINE CL A COM 68280L101 49,254 4,328 1,178 0.0000
2025-05-14 2024-06-30 13F/A-2 ONEWATER MARINE CL A COM 68280L101 44,926 -1,133 -2.46 1,239 -4.48 0.0001
2024-10-17 2024-06-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 44,926 -1,133 1,239 0.0001
2024-08-14 2024-06-30 13F ONEWATER MARINE CL A COM 68280L101 44,926 -1,133 1,239 0.0001
2024-10-17 2024-03-31 13F/A-2 ONEWATER MARINE CL A COM 68280L101 46,059 -1,779 -3.72 1,297 -19.80 0.0001
2024-08-16 2024-03-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 46,059 -1,779 1,297 0.0000
2024-05-15 2024-03-31 13F ONEWATER MARINE CL A COM 68280L101 46,059 -1,779 1,297 0.0001
2024-08-16 2023-12-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 47,838 11,083 30.15 1,616 71.73 0.0001
2024-02-13 2023-12-31 13F ONEWATER MARINE CL A COM 68280L101 47,838 11,083 1,616 0.0001
2023-11-15 2023-09-30 13F ONEWATER MARINE CL A COM 68280L101 36,755 3,835 11.65 942 -21.12 0.0001
2023-08-14 2023-06-30 13F ONEWATER MARINE CL A COM 68280L101 32,920 20,933 174.63 1,193 256.12 0.0001
2023-05-15 2023-03-31 13F ONEWATER MARINE CL A COM 68280L101 11,987 1,239 11.53 335 9.12 0.0000
2023-02-14 2022-12-31 13F ONEWATER MARINE CL A COM 68280L101 10,748 -34,801 -76.40 307 -77.59 0.0000
2022-11-14 2022-09-30 13F ONEWATER MARINE CL A COM 68280L101 45,549 -3,285 -6.73 1,370 -15.12 0.0002
2022-10-27 2022-06-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 48,834 34,782 247.52 1,614 234.16 0.0002
2022-08-15 2022-06-30 13F ONEWATER MARINE CL A COM 68280L101 48,834 34,782 1,614 0.0000
2022-10-27 2022-03-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 14,052 -24,947 -63.97 483 -79.69 0.0001
2022-05-13 2022-03-31 13F ONEWATER MARINE CL A COM 68280L101 14,052 -24,947 483 0.0001
2022-02-14 2021-12-31 13F ONEWATER MARINE CL A COM 68280L101 38,999 18,119 86.78 2,378 183.10 0.0003
2021-11-15 2021-09-30 13F ONEWATER MARINE CL A COM 68280L101 20,880 -585 -2.73 840 -6.77 0.0001
2021-08-23 2021-06-30 13F/A-1 ONEWATER MARINE CL A COM 68280L101 21,465 -142,633 -86.92 901 -86.26 0.0001
2021-08-16 2021-06-30 13F ONEWATER MARINE CL A COM 68280L101 21,465 -142,633 901 0.0000
2021-05-17 2021-03-31 13F ONEWATER MARINE CL A COM 68280L101 164,098 -110,028 -40.14 6,557 -17.78 0.0010
2021-02-16 2020-12-31 13F ONEWATER MARINE CL A COM 68280L101 274,126 233,594 576.32 7,975 859.69 0.0012
2020-11-13 2020-09-30 13F ONEWATER MARINE CL A COM 68280L101 40,532 37,840 1,405.65 831 1,178.46 0.0002
2020-08-14 2020-06-30 13F ONEWATER MARINE CL A COM 68280L101 2,692 -996 -27.01 65 132.14 0.0000
2020-05-26 2020-03-31 13F/A-1 ONEWATER MARINE CL A COM 68280L101 3,688 3,688 28 0.0000
2020-05-15 2020-03-31 13F ONEWATER MARINE CL A COM 68280L101 3,688 28 0.0000
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.