Malibu Boats, Inc.
US ˙ NasdaqGM ˙ US56117J1007

SecurityMBUU / Malibu Boats, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership32,974 shares
Latest Disclosed Value $ 1,033,405
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series ownership in MBUU / Malibu Boats, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 32,974 shares of Malibu Boats, Inc. (US:MBUU) valued at $1,033,405 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 32,974 shares of Malibu Boats, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $870,184 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)
2025-08-26 2025-06-30 NP Malibu Boats EC US56117J1007 32,974 0 0.00 1,033 2.18 0.0232
2025-05-28 2025-03-31 NP Malibu Boats EC US56117J1007 32,974 0 0.00 1,012 -18.40 0.0243
2025-02-25 2024-12-31 NP Malibu Boats EC US56117J1007 32,974 -7,435 -18.40 1,239 -20.98 0.0271
2024-11-26 2024-09-30 NP Malibu Boats EC US56117J1007 40,409 2,484 6.55 1,568 18.07 0.0297
2024-08-26 2024-06-30 NP Malibu Boats EC US56117J1007 37,925 1,709 4.72 1,329 -15.25 0.0271
2024-05-28 2024-03-31 NP Malibu Boats EC US56117J1007 36,216 -833 -2.25 1,567 -22.85 0.0327
2024-02-26 2023-12-31 NP Malibu Boats EC US56117J1007 37,049 2,375 6.85 2,031 19.54 0.0433
2023-11-28 2023-09-30 NP Malibu Boats EC US56117J1007 34,674 -1,073 -3.00 1,700 -18.94 0.0443
2023-08-25 2023-06-30 NP Malibu Boats EC US56117J1007 35,747 3,047 9.32 2,097 13.60 0.0497
2023-05-26 2023-03-31 NP Malibu Boats EC US56117J1007 32,700 633 1.97 1,846 7.96 0.0492
2023-02-24 2022-12-31 NP Malibu Boats EC US56117J1007 32,067 -647 -1.98 1,709 8.92 0.0470
2022-11-25 2022-09-30 NP Malibu Boats EC US56117J1007 32,714 664 2.07 1,570 -7.10 0.0450
2022-08-25 2022-06-30 NP Malibu Boats EC US56117J1007 32,050 -251 -0.78 1,689 -9.82 0.0466
2022-05-26 2022-03-31 NP Malibu Boats EC US56117J1007 32,301 739 2.34 1,874 -13.65 0.0437
2022-02-25 2021-12-31 NP Malibu Boats EC US56117J1007 31,562 0 0.00 2,169 -1.77 0.0470
2021-11-24 2021-09-30 NP Malibu Boats EC US56117J1007 31,562 0 0.00 2,209 -4.58 0.0487
2021-08-26 2021-06-30 NP Malibu Boats EC US56117J1007 31,562 0 0.00 2,314 -7.96 0.0496
2021-05-27 2021-03-31 NP Malibu Boats EC US56117J1007 31,562 -513 -1.60 2,515 25.57 0.0570
2021-02-25 2020-12-31 NP Malibu Boats EC US56117J1007 32,075 -2,121 -6.20 2,003 18.18 0.0513
2020-11-25 2020-09-30 NP Malibu Boats EC US56117J1007 34,196 0 0.00 1,695 -4.62 0.0544
2020-08-27 2020-06-30 NP Malibu Boats EC US56117J1007 34,196 1,103 3.33 1,776 86.55 0.0581
2020-06-01 2020-03-31 NP Malibu Boats EC US56117J1007 33,093 967 3.01 953 -27.60 0.0389
2020-02-27 2019-12-31 NP Malibu Boats EC 56117J100 32,126 714 2.27 1,316 36.55 0.0396
2019-11-27 2019-09-30 NP Malibu Boats EC US56117J1007 31,412 31,412 964 0.0319
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.