Malibu Boats, Inc.
MX ˙ BMV ˙ US56117J1007
SecurityMX:MBUU / Malibu Boats, Inc.
InstitutionTwo Sigma Investments, Lp
ManagerJohn Overdeck, David Siegel
Latest Disclosed Ownership39,967 shares
Latest Disclosed Value $ 1,035,945
Two Sigma Investments, Lp reports 57.14% decrease in ownership of MBUU / Malibu Boats, Inc.

On May 15, 2026 - Two Sigma Investments, Lp filed a 13F-HR form disclosing ownership of 39,967 shares of Malibu Boats, Inc. (MX:MBUU) valued at $1,035,945 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 93,241 shares of Malibu Boats, Inc.. This represents a change in shares of -57.14% during the quarter.

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)
2026-05-15 2026-03-31 13F MALIBU BOATS COM CL A 56117J100 39,967 -53,274 -57.14 1,036 -60.65 0.0008
2026-02-17 2025-12-31 13F MALIBU BOATS COM CL A 56117J100 93,241 36,589 64.59 2,630 43.09 0.0037
2025-11-14 2025-09-30 13F MALIBU BOATS COM CL A 56117J100 56,652 49,052 645.42 1,838 672.27 0.0027
2025-08-14 2025-06-30 13F MALIBU BOATS COM CL A 56117J100 7,600 7,600 238 0.0004
2024-02-14 2023-12-31 13F MALIBU BOATS COM CL A 56117J100 0 -28,823 -100.00 0 -100.00
2023-11-14 2023-09-30 13F MALIBU BOATS COM CL A 56117J100 28,823 28,823 1,413 0.0038
2023-02-14 2022-12-31 13F MALIBU BOATS COM CL A 56117J100 0 -21,248 -100.00 0 -100.00
2022-11-14 2022-09-30 13F MALIBU BOATS COM CL A 56117J100 21,248 21,248 1,020 0.0035
2022-05-16 2022-03-31 13F MALIBU BOATS COM CL A 56117J100 0 -3,000 -100.00 0 -100.00
2022-02-14 2021-12-31 13F MALIBU BOATS COM CL A 56117J100 3,000 -17,800 -85.58 206 -85.85 0.0004
2021-11-15 2021-09-30 13F MALIBU BOATS COM CL A 56117J100 20,800 20,800 1,456 0.0033
2020-02-14 2019-12-31 13F MALIBU BOATS COM CL A 56117J100 0 -55,203 -100.00 0 -100.00
2019-11-14 2019-09-30 13F MALIBU BOATS COM CL A 56117J100 55,203 37,613 213.83 1,694 148.02 0.0057
2019-08-14 2019-06-30 13F MALIBU BOATS COM CL A 56117J100 17,590 -101,840 -85.27 683 -85.55 0.0023
2019-05-15 2019-03-31 13F MALIBU BOATS COM CL A 56117J100 119,430 -98,217 -45.13 4,727 -37.59 0.0153
2019-02-14 2018-12-31 13F MALIBU BOATS COM CL A 56117J100 217,647 -7,185 -3.20 7,574 -38.44 0.0297
2018-11-14 2018-09-30 13F MALIBU BOATS COM CL A 56117J100 224,832 117,457 109.39 12,303 173.22 0.0335
2018-08-14 2018-06-30 13F MALIBU BOATS COM CL A 56117J100 107,375 107,375 4,503 0.0134
2018-02-14 2017-12-31 13F MALIBU BOATS COM CL A 56117J100 0 -7,000 -100.00 0 -100.00
2017-11-14 2017-09-30 13F MALIBU BOATS COM CL A 56117J100 7,000 -18,561 -72.61 221 -66.57 0.0008
2017-08-14 2017-06-30 13F MALIBU BOATS COM CL A 56117J100 25,561 -74,462 -74.44 661 -70.57 0.0024
2017-05-15 2017-03-31 13F MALIBU BOATS COM CL A 56117J100 100,023 21,294 27.05 2,246 49.53 0.0076
2017-02-14 2016-12-31 13F MALIBU BOATS COM CL A 56117J100 78,729 58,193 283.37 1,502 390.85 0.0058
2016-11-14 2016-09-30 13F MALIBU BOATS COM CL A 56117J100 20,536 20,536 0.00 306 0.0011
2016-05-16 2016-03-31 13F MALIBU BOATS COM CL A 56117J100 0 -35,727 -100.00 0 -100.00
2016-02-16 2015-12-31 13F MALIBU BOATS COM CL A 56117J100 35,727 -90,149 -71.62 585 -66.76 0.0028
2015-11-16 2015-09-30 13F MALIBU BOATS COM CL A 56117J100 125,876 13,566 12.08 1,760 -21.99 0.0090
2016-02-09 2015-06-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 112,310 103,110 1,120.76 2,256 949.30 0.0110
2015-08-14 2015-06-30 13F MALIBU BOATS COM CL A 56117J100 112,310 2,257
2016-02-09 2015-03-31 13F/A-1 MALIBU BOATS COM CL A 56117J100 9,200 -7,882 -46.14 215 -34.65 0.0011
2015-05-15 2015-03-31 13F MALIBU BOATS COM CL A 56117J100 9,200 215
2016-02-09 2014-12-31 13F/A-1 MALIBU BOATS COM CL A 56117J100 17,082 -23,881 -58.30 329 -56.65 0.0019
2015-02-17 2014-12-31 13F MALIBU BOATS COM CL A 56117J100 17,082 329
2016-02-09 2014-09-30 13F/A-1 MALIBU BOATS COM CL A 56117J100 40,963 40,963 759 0.0036
2014-11-14 2014-09-30 13F MALIBU BOATS COM CL A 56117J100 40,963 759
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.