MPLX LP - 합자회사
US ˙ NYSE ˙ US55336V1008

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership73,567 shares
Latest Disclosed Value $ 4,198,463
Advisory Services Network, LLC reports 35.52% increase in ownership of MPLX / MPLX LP - Limited Partnership

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 73,567 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $4,198,469 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 54,285 shares of MPLX LP - Limited Partnership. This represents a change in shares of 35.52% during the quarter. The current value of the position is $4,155,064 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)
2026-05-15 2026-03-31 13F MPLX LP PARTNERSHIP UNITS Stock 55336V100 73,567 19,282 35.52 4,198 44.91 0.0388
2026-02-17 2025-12-31 13F MPLX LP PARTNERSHIP UNITS Stock 55336V100 54,285 7,497 16.02 2,897 23.96 0.0410
2025-11-18 2025-09-30 13F MPLX Stock 55336V100 46,788 5,037 12.06 2,337 6.66 0.0343
2025-08-19 2025-06-30 13F MPLX Stock 55336V100 41,751 9,064 27.73 2,192 25.27 0.0353
2025-05-15 2025-03-31 13F MPLX Stock 55336V100 32,687 10,907 50.08 1,749 67.85 0.0336
2025-02-13 2024-12-31 13F MPLX Stock 55336V100 21,780 48 0.22 1,042 12.65 0.0194
2024-11-14 2024-09-30 13F MPLX Stock 55336V100 21,732 0 0.00 926 0.00 0.0191
2024-08-13 2024-06-30 13F MPLX Stock 55336V100 21,732 319 1.49 926 4.05 0.0191
2024-05-06 2024-03-31 13F MPLX Stock 55336V100 21,413 -2 -0.01 890 13.10 0.0197
2024-02-09 2023-12-31 13F MPLX Stock 55336V100 21,415 520 2.49 786 5.79 0.0192
2023-11-14 2023-09-30 13F MPLX Stock 55336V100 20,895 -240 -1.14 743 3.63 0.0200
2023-08-09 2023-06-30 13F MPLX Stock 55336V100 21,135 -119 -0.56 717 -2.05 0.0191
2023-05-17 2023-03-31 13F MPLX Stock 55336V100 21,254 -310 -1.44 732 3.39 0.0203
2023-02-13 2022-12-31 13F MPLX Stock 55336V100 21,564 339 1.60 708 11.15 0.0217
2022-11-14 2022-09-30 13F MPLX Stock 55336V100 21,225 13 0.06 637 3.07 0.0225
2022-08-02 2022-06-30 13F MPLX Stock 55336V100 21,212 113 0.54 618 -11.71 0.0211
2022-05-23 2022-03-31 13F MPLX Stock 55336V100 21,099 -1,154 -5.19 700 6.38 0.0206
2022-02-14 2021-12-31 13F MPLX Stock 55336V100 22,253 -467 -2.06 658 1.70 0.0189
2021-11-05 2021-09-30 13F MPLX Stock 55336V100 22,720 -737 -3.14 647 -6.91 0.0206
2021-08-12 2021-06-30 13F MPLX Stock 55336V100 23,457 12 0.05 695 15.64 0.0219
2021-05-24 2021-03-31 13F MPLX Stock 55336V100 23,445 -185 -0.78 601 17.38 0.0223
2021-02-09 2020-12-31 13F MPLX Stock 55336V100 23,630 79 0.34 512 38.01 0.0205
2020-11-16 2020-09-30 13F MPLX Stock 55336V100 23,551 -179 -0.75 371 -9.51 0.0175
2020-08-10 2020-06-30 13F MPLX LP PARTNERSHIP UNITS Stock 55336V100 23,730 1,784 8.13 410 60.78 0.0225
2020-05-15 2020-03-31 13F MPLX Stock 55336V100 21,946 15,773 255.52 255 62.42 0.0167
2020-02-04 2019-12-31 13F MPLX Stock 55336V100 6,173 64 1.05 157 -19.90 0.0083
2019-11-04 2019-09-30 13F MPLX Stock 55336V100 6,109 0 0.00 196 0.00 0.0120
2019-08-01 2019-06-30 13F MPLX Stock 55336V100 6,109 -4,043 -39.82 196 -41.14 0.0120
2019-05-20 2019-03-31 13F MPLX Stock 55336V100 10,152 4,070 66.92 333 80.98 0.0234
2019-02-15 2018-12-31 13F MPLX Stock 55336V100 6,082 -2,884 -32.17 184 -40.65 0.0161
2018-11-02 2018-09-30 13F MPLX Stock 55336V100 8,966 3,013 50.61 310 42.20 0.0226
2018-07-27 2018-06-30 13F MPLX Stock 55336V100 5,953 -5,152 -46.39 218 -40.60 0.0166
2018-04-23 2018-03-31 13F MPLX Stock 55336V100 11,105 -2,393 -17.73 367 -23.38 0.0293
2018-02-08 2017-12-31 13F MPLX Stock 55336V100 13,498 4,034 42.62 479 44.71 0.0418
2017-10-12 2017-09-30 13F MPLX Stock 55336V100 9,464 101 1.08 331 5.75 0.0379
2017-08-17 2017-06-30 13F MPLX LP COM UNIT REP Stock 55336V100 9,363 213 2.33 313 -5.15 0.0408
2017-04-28 2017-03-31 13F MPLX LP COM UNIT REP Stock 55336V100 9,150 3,614 65.28 330 76.47 0.0479
2016-10-07 2016-09-30 13F MPLX MLP 55336V100 5,536 2,254 68.68 187 70.00 0.0352
2016-07-27 2016-06-30 13F MPLX MLP 55336V100 3,282 257 8.50 110 22.22 0.0250
2016-04-21 2016-03-31 13F MPLX MLP 55336V100 3,025 -3,270 -51.95 90 -63.71 0.0246
2016-01-27 2015-12-31 13F MPLX LP COM UNIT REP MLP 55336V100 6,295 5,940 1,673.24 248 1,671.43 0.0797
2015-10-01 2015-09-30 13F MPLX LP COM UNIT REPSTG LTD PARTNER INT MLP 55336V100 355 155 77.50 14 0.00 0.0042
2015-07-02 2015-06-30 13F MPLX LP COM UNIT REP MLP 55336V100 200 0 0.00 14 -6.67 0.0041
2015-04-08 2015-03-31 13F MPLX LP COM UNIT REP MLP 55336V100 200 0 0.00 15 0.00 0.0041
2015-01-23 2014-12-31 13F MPLX LP COM UNIT REP MLP 55336V100 200 200 15 0.0047
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.