MPLX LP - Limited Partnership
US ˙ NYSE ˙ US55336V1008

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionCreative Planning
Latest Disclosed Ownership57,623 shares
Latest Disclosed Value $ 3,288,584
Creative Planning reports 22.37% increase in ownership of MPLX / MPLX LP - Limited Partnership

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 57,623 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $3,288,545 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 47,091 shares of MPLX LP - Limited Partnership. This represents a change in shares of 22.37% during the quarter. The current value of the position is $3,254,547 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)
2026-05-12 2026-03-31 13F MPLX COM UNIT REP LTD 55336V100 57,623 10,532 22.37 3,289 30.84 0.0022
2026-02-17 2025-12-31 13F MPLX COM UNIT REP LTD 55336V100 47,091 -11,749 -19.97 2,513 -14.49 0.0018
2025-11-14 2025-09-30 13F MPLX COM UNIT REP LTD 55336V100 58,840 5,804 10.94 2,939 7.62 0.0022
2025-08-08 2025-06-30 13F MPLX COM UNIT REP LTD 55336V100 53,036 1,133 2.18 2,732 -1.66 0.0023
2025-05-15 2025-03-31 13F MPLX COM UNIT REP LTD 55336V100 51,903 45 0.09 2,778 11.93 0.0026
2025-02-14 2024-12-31 13F MPLX COM UNIT REP LTD 55336V100 51,858 350 0.68 2,482 8.34 0.0024
2024-10-11 2024-09-30 13F MPLX COM UNIT REP LTD 55336V100 51,508 16,076 45.37 2,290 51.76 0.0023
2024-08-15 2024-06-30 13F MPLX COM UNIT REP LTD 55336V100 35,432 8,979 33.94 1,509 37.31 0.0016
2024-05-13 2024-03-31 13F MPLX COM UNIT REP LTD 55336V100 26,453 70 0.27 1,099 13.53 0.0012
2024-02-14 2023-12-31 13F MPLX COM UNIT REP LTD 55336V100 26,383 1,074 4.24 969 7.56 0.0018
2023-11-16 2023-09-30 13F MPLX COM UNIT REP LTD 55336V100 25,309 -14,543 -36.49 900 -33.43 0.0012
2023-07-21 2023-06-30 13F MPLX COM UNIT REP LTD 55336V100 39,852 -8,574 -17.71 1,353 -18.94 0.0018
2023-05-15 2023-03-31 13F MPLX COM UNIT REP LTD 55336V100 48,426 6,250 14.82 1,668 20.43 0.0024
2023-02-10 2022-12-31 13F MPLX COM UNIT REP LTD 55336V100 42,176 2,201 5.51 1,385 15.42 0.0021
2022-11-03 2022-09-30 13F MPLX COM UNIT REP LTD 55336V100 39,975 406 1.03 1,200 4.08 0.0021
2022-08-15 2022-06-30 13F MPLX COM UNIT REP LTD 55336V100 39,569 6,655 20.22 1,153 5.59 0.0019
2022-05-16 2022-03-31 13F MPLX COM UNIT REP LTD 55336V100 32,914 7,316 28.58 1,092 44.25 0.0017
2022-02-11 2021-12-31 13F MPLX COM UNIT REP LTD 55336V100 25,598 -5,413 -17.46 757 -14.27 0.0012
2021-11-10 2021-09-30 13F MPLX COM UNIT REP LTD 55336V100 31,011 1,197 4.01 883 0.00 0.0016
2021-08-04 2021-06-30 13F MPLX COM UNIT REP LTD 55336V100 29,814 -318,225 -91.43 883 -90.10 0.0016
2021-04-30 2021-03-31 13F CreativePlanning COM UNIT REP LTD 55336V100 348,039 87,356 33.51 8,920 58.04 0.0180
2021-01-29 2020-12-31 13F MPLX COM UNIT REP LTD 55336V100 260,683 7,835 3.10 5,644 41.81 0.0124
2020-11-05 2020-09-30 13F MPLX COM UNIT REP LTD 55336V100 252,848 -1,275 -0.50 3,980 -9.36 0.0104
2020-07-23 2020-06-30 13F MPLX COM UNIT REP LTD 55336V100 254,123 -172,841 -40.48 4,391 -11.49 0.0127
2020-05-05 2020-03-31 13F MPLX COM UNIT REP LTD 55336V100 426,964 399,383 1,448.04 4,961 606.70 0.0176
2020-01-30 2019-12-31 13F MPLX COM UNIT REP LTD 55336V100 27,581 -9,097 -24.80 702 -31.65 0.0021
2019-11-01 2019-09-30 13F MPLX COM UNIT REP LTD 55336V100 36,678 9,533 35.12 1,027 17.51 0.0033
2019-07-26 2019-06-30 13F MPLX COM UNIT REP LTD 55336V100 27,145 -897 -3.20 874 -5.21 0.0029
2019-04-24 2019-03-31 13F MPLX COM UNIT REP LTD 55336V100 28,042 1,741 6.62 922 15.68 0.0033
2019-02-12 2018-12-31 13F/A-1 MPLX COM UNIT REP LTD 55336V100 26,301 -5,270 -16.69 797 -27.21 0.0033
2019-02-01 2018-12-31 13F MPLX COM UNIT REP LTD 55336V100 28,598 -2,973 867
2018-10-25 2018-09-30 13F MPLX COM UNIT REP LTD 55336V100 31,571 587 1.89 1,095 3.50 0.0041
2018-07-20 2018-06-30 13F MPLX COM UNIT REP LTD 55336V100 30,984 2,081 7.20 1,058 10.79 0.0042
2018-04-18 2018-03-31 13F MPLX COM UNIT REP LTD 55336V100 28,903 15 0.05 955 -6.83 0.0039
2018-01-17 2017-12-31 13F MPLX COM UNIT REP LTD 55336V100 28,888 542 1.91 1,025 3.33 0.0044
2017-10-17 2017-09-30 13F MPLX COM UNIT REP LTD 55336V100 28,346 2,665 10.38 992 15.62 0.0046
2017-07-12 2017-06-30 13F MPLX COM UNIT REP LTD 55336V100 25,681 -1,234 -4.58 858 -11.64 0.0043
2017-04-07 2017-03-31 13F MPLX COM UNIT REP LTD 55336V100 26,915 -267 -0.98 971 3.19 0.0053
2017-01-09 2016-12-31 13F MPLX COM UNIT REP LTD 55336V100 27,182 6,258 29.91 941 32.91 0.0057
2016-10-12 2016-09-30 13F MPLX COM UNIT REP LTD 55336V100 20,924 -279 -1.32 708 -0.70 0.0045
2016-07-12 2016-06-30 13F MPLX COM UNIT REP LTD 55336V100 21,203 -83,003 -79.65 713 -76.96 0.0052
2016-04-08 2016-03-31 13F MPLX COM UNIT REP LTD 55336V100 104,206 -895 -0.85 3,094 -25.16 0.0241
2016-01-11 2015-12-31 13F MPLX COM UNIT REP LTD 55336V100 105,101 104,595 20,670.95 4,134 21,657.89 0.0340
2015-10-09 2015-09-30 13F MPLX COM UNIT REP LTD 55336V100 506 506 0.00 19 0.0002
2015-07-09 2015-06-30 13F MPLX COM UNIT REP LTD 55336V100 0 -674 -100.00 0 -100.00
2015-04-13 2015-03-31 13F MPLX COM UNIT REP LTD 55336V100 674 674 0.00 49 0.0005
2015-01-29 2014-12-31 13F MPLX COM UNIT REP LTD 55336V100 0 -775 -100.00 0 -100.00
2014-10-10 2014-09-30 13F MPLX COM UNIT REP LTD 55336V100 775 375 93.75 46 76.92 0.0005
2014-08-20 2014-06-30 13F MPLX COM UNIT REP LTD 55336V100 400 0 0.00 26 30.00 0.0003
2014-04-11 2014-03-31 13F MPLX COM UNIT REP LTD 55336V100 400 0 0.00 20 11.11 0.0003
2014-01-06 2013-12-31 13F MPLX COM UNIT REP LTD 55336V100 400 0 0.00 18 20.00 0.0003
2013-10-10 2013-09-30 13F MPLX COM UNIT REP LTD 55336V100 400 0 0.00 15 0.00 0.0003
2013-07-09 2013-06-30 13F MPLX COM UNIT REP LTD 55336V100 400 400 15 0.0003
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.