Malibu Boats, Inc.
US ˙ NasdaqGM ˙ US56117J1007

SecurityMBUU / Malibu Boats, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership43,682 shares
Latest Disclosed Value $ 1,232,246
Sei Investments Co reports 269.65% increase in ownership of MBUU / Malibu Boats, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 43,682 shares of Malibu Boats, Inc. (US:MBUU) valued at $1,232,269 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 11,817 shares of Malibu Boats, Inc.. This represents a change in shares of 269.65% during the quarter. The current value of the position is $1,191,645 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.

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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 MALIBU BOATS COM CL A 56117J100 43,682 31,865 269.65 1,232 221.67
2025-11-13 2025-09-30 13F MALIBU BOATS COM CL A 56117J100 11,817 2,602 28.24 383 32.99 0.0004
2025-08-14 2025-06-30 13F MALIBU BOATS COM CL A 56117J100 9,215 -1,449 -13.59 289 -11.93 0.0003
2025-05-14 2025-03-31 13F/A-1 MALIBU BOATS COM CL A 56117J100 10,664 2,745 34.66 327 10.10 0.0004
2025-05-13 2025-03-31 13F MALIBU BOATS COM CL A 56117J100 7,919 0 297 0.0003
2025-02-11 2024-12-31 13F MALIBU BOATS COM CL A 56117J100 7,919 7,919 298 0.0004
2024-11-12 2024-09-30 13F MALIBU BOATS COM CL A 56117J100 0 -25,491 -100.00 0 -100.00
2024-08-13 2024-06-30 13F MALIBU BOATS COM CL A 56117J100 25,491 -51,274 -66.79 893 -73.12 0.0013
2024-05-07 2024-03-31 13F MALIBU BOATS COM CL A 56117J100 76,765 -51,115 -39.97 3,322 -52.61 0.0049
2024-02-14 2023-12-31 13F MALIBU BOATS COM CL A 56117J100 127,880 5,048 4.11 7,010 16.43 0.0113
2023-11-14 2023-09-30 13F MALIBU BOATS COM CL A 56117J100 122,832 -5,157 -4.03 6,021 -19.79 0.0108
2023-08-11 2023-06-30 13F MALIBU BOATS COM CL A 56117J100 127,989 0 0.00 7,508 3.92 0.0131
2023-05-12 2023-03-31 13F MALIBU BOATS COM CL A 56117J100 127,989 3,041 2.43 7,225 8.48 0.0134
2023-02-10 2022-12-31 13F MALIBU BOATS COM CL A 56117J100 124,948 -9,064 -6.76 6,660 3.53 0.0148
2022-11-14 2022-09-30 13F MALIBU BOATS COM CL A 56117J100 134,012 706 0.53 6,432 -8.42 0.0143
2022-08-15 2022-06-30 13F MALIBU BOATS COM CL A 56117J100 133,306 8,791 7.06 7,023 -2.69 0.0152
2022-05-13 2022-03-31 13F MALIBU BOATS COM CL A 56117J100 124,515 13,656 12.32 7,217 -5.14 0.0145
2022-02-14 2021-12-31 13F MALIBU BOATS COM CL A 56117J100 110,859 21,466 24.01 7,608 21.94 0.0143
2021-11-12 2021-09-30 13F MALIBU BOATS COM CL A 56117J100 89,393 13,408 17.65 6,239 12.15 0.0131
2021-08-06 2021-06-30 13F MALIBU BOATS COM CL A 56117J100 75,985 23,154 43.83 5,563 33.31 0.0123
2021-05-12 2021-03-31 13F MALIBU BOATS COM CL A 56117J100 52,831 14,621 38.26 4,173 74.09 0.0105
2021-02-08 2020-12-31 13F MALIBU BOATS COM CL A 56117J100 38,210 10,907 39.95 2,397 74.45 0.0062
2020-12-04 2020-09-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 27,303 12,911 89.71 1,374 79.14 0.0040
2020-11-06 2020-09-30 13F MALIBU BOATS COM CL A 56117J100 27,303 12,911 1,374 3,308.2865
2020-08-17 2020-06-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 14,392 14,392 767 0.0024
2020-08-11 2020-06-30 13F MALIBU BOATS COM CL A 56117J100 5,322 5,322 273 740.5270
2019-11-12 2019-09-30 13F MALIBU BOATS COM CL A 56117J100 0 -9,135 -100.00 0 -100.00
2019-08-14 2019-06-30 13F MALIBU BOATS COM CL A 56117J100 9,135 1,176 14.78 349 12.94 0.0011
2019-05-15 2019-03-31 13F MALIBU BOATS COM CL A 56117J100 7,959 1,246 18.56 309 5.10 0.0010
2019-02-13 2018-12-31 13F MALIBU BOATS COM CL A 56117J100 6,713 3,350 99.61 294 59.78 0.0010
2018-11-08 2018-09-30 13F MALIBU BOATS COM CL A 56117J100 3,363 -27,643 -89.15 184 -85.85 0.0007
2018-08-03 2018-06-30 13F MALIBU BOATS COM CL A 56117J100 31,006 -16,206 -34.33 1,300 -17.09 0.0044
2018-05-11 2018-03-31 13F MALIBU BOATS COM CL A 56117J100 47,212 -23,236 -32.98 1,568 -25.16 0.0060
2018-02-08 2017-12-31 13F MALIBU BOATS COM CL A 56117J100 70,448 34,125 93.95 2,095 82.33 0.0073
2017-11-06 2017-09-30 13F MALIBU BOATS COM CL A 56117J100 36,323 22,913 170.87 1,149 231.12 0.0041
2017-07-31 2017-06-30 13F MALIBU BOATS COM CL A 56117J100 13,410 -3,105 -18.80 347 -6.47 0.0014
2017-05-05 2017-03-31 13F MALIBU BOATS COM CL A 56117J100 16,515 -422 -2.49 371 14.86 0.0016
2017-02-02 2016-12-31 13F MALIBU BOATS COM CL A 56117J100 16,937 12,722 301.83 323 412.70 0.0016
2016-11-04 2016-09-30 13F MALIBU BOATS COM CL A 56117J100 4,215 -466 -9.96 63 10.53 0.0003
2016-08-11 2016-06-30 13F MALIBU BOATS COM CL A 56117J100 4,681 319 7.31 57 -20.83 0.0003
2016-05-10 2016-03-31 13F/A-1 MALIBU BOATS COM CL A 56117J100 4,362 -408 -8.55 72 -7.69 0.0004
2016-02-03 2015-12-31 13F MALIBU BOATS COM CL A 56117J100 4,770 -4,980 -51.08 78 -42.65 0.0005
2015-11-02 2015-09-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 9,750 1,554 18.96 136 -17.58 0.0012
2015-10-30 2015-09-30 13F DIREXION SHS ETF TR COM CL A 56117J100 9,750 136
2015-08-07 2015-06-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 8,196 1,089 15.32 165 -0.60 0.0015
2015-08-04 2015-06-30 13F MALIBU BOATS COM CL A 56117J100 8,196 1,089 165 0.0015
2015-05-14 2015-03-31 13F/A-1 MALIBU BOATS COM CL A 56117J100 7,107 397 5.92 166 28.68 0.0014
2015-05-01 2015-03-31 13F MALIBU BOATS COM CL A 56117J100 7,107 166
2015-02-10 2014-12-31 13F MALIBU BOATS COM CL A 56117J100 6,710 6,710 129 0.0011
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.