MPLX LP - 有限合夥企業
US ˙ NYSE ˙ US55336V1008

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionLinscomb & Williams, Inc.
Latest Disclosed Ownership21,100 shares
Latest Disclosed Value $ 1,204,198
Linscomb & Williams, Inc. reports 32.30% increase in ownership of MPLX / MPLX LP - Limited Partnership

On May 11, 2026 - Linscomb & Williams, Inc. filed a 13F-HR form disclosing ownership of 21,100 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $1,204,177 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 15,948 shares of MPLX LP - Limited Partnership. This represents a change in shares of 32.30% during the quarter. The current value of the position is $1,191,517 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)
2026-05-11 2026-03-31 13F MPLX COM UNIT REP LTD 55336V100 21,100 5,152 32.30 1,204 41.48 0.0536
2026-02-10 2025-12-31 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 851 6.91 0.0357
2025-11-05 2025-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 797 -3.05 0.0343
2025-08-04 2025-06-30 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 821 -3.75 0.0378
2025-05-12 2025-03-31 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 854 11.80 0.0425
2025-02-05 2024-12-31 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 763 7.62 0.0380
2024-11-06 2024-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 709 4.42 0.0352
2024-08-07 2024-06-30 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 679 2.57 0.0351
2024-05-14 2024-03-31 13F MPLX COM UNIT REP LTD 55336V100 15,948 0 0.00 663 13.16 0.0341
2024-02-06 2023-12-31 13F MPLX COM UNIT REP LTD 55336V100 15,948 389 2.50 586 5.79 0.0322
2023-10-10 2023-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,559 0 0.00 553 4.73 0.0324
2023-08-09 2023-06-30 13F MPLX COM UNIT REP LTD 55336V100 15,559 0 0.00 528 -1.49 0.0285
2023-05-11 2023-03-31 13F MPLX COM UNIT REP LTD 55336V100 15,559 -3,888 -19.99 536 -15.99 0.0281
2023-02-14 2022-12-31 13F MPLX COM UNIT REP LTD 55336V100 19,447 3,601 22.72 639 34.03 0.0324
2022-11-09 2022-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,846 0 0.00 476 3.03 0.0289
2022-08-15 2022-06-30 13F MPLX COM UNIT REP LTD 55336V100 15,846 -4,055 -20.38 462 -30.00 0.0265
2022-05-17 2022-03-31 13F MPLX COM UNIT REP LTD 55336V100 19,901 75 0.38 660 12.44 0.0315
2022-02-10 2021-12-31 13F MPLX COM 55336V100 19,826 -1,357 -6.41 587 -2.65 0.0280
2021-11-03 2021-09-30 13F MPLX COM 55336V100 21,183 100 0.47 603 -3.37 0.0311
2021-08-10 2021-06-30 13F MPLX COM 55336V100 21,083 981 4.88 624 21.17 0.0320
2021-05-12 2021-03-31 13F MPLX COM 55336V100 20,102 -120 -0.59 515 17.58 0.0280
2021-02-11 2020-12-31 13F MPLX COM 55336V100 20,222 1,120 5.86 438 45.51 0.0262
2020-11-13 2020-09-30 13F MPLX COM 55336V100 19,102 199 1.05 301 -7.95 0.0207
2020-08-11 2020-06-30 13F MPLX COM 55336V100 18,903 4,337 29.77 327 93.49 0.0239
2020-05-11 2020-03-31 13F MPLX COM 55336V100 14,566 -5,794 -28.46 169 -67.37 0.0149
2020-02-13 2019-12-31 13F MPLX COM 55336V100 20,360 -1,400 -6.43 518 -14.94 0.0338
2019-11-08 2019-09-30 13F MPLX COM 55336V100 21,760 2,448 12.68 609 -2.09 0.0490
2019-08-06 2019-06-30 13F MPLX COM 55336V100 19,312 71 0.37 622 -1.74 0.0510
2019-05-09 2019-03-31 13F MPLX COM 55336V100 19,241 234 1.23 633 9.90 0.0533
2019-02-08 2018-12-31 13F MPLX COM 55336V100 19,007 60 0.32 576 -12.33 0.0545
2018-11-08 2018-09-30 13F MPLX COM 55336V100 18,947 4,870 34.60 657 36.59 0.0539
2018-08-07 2018-06-30 13F MPLX COM 55336V100 14,077 253 1.83 481 5.25 0.0409
2018-05-04 2018-03-31 13F MPLX COM 55336V100 13,824 249 1.83 457 -4.99 0.0389
2018-02-02 2017-12-31 13F MPLX COM 55336V100 13,575 -489 -3.48 481 -2.24 0.0395
2017-10-27 2017-09-30 13F MPLX COM 55336V100 14,064 53 0.38 492 5.13 0.0422
2017-08-15 2017-06-30 13F MPLX COM 55336V100 14,011 21 0.15 468 -7.33 0.0419
2017-04-28 2017-03-31 13F MPLX COM 55336V100 13,990 41 0.29 505 4.55 0.0457
2017-02-07 2016-12-31 13F MPLX COM 55336V100 13,949 350 2.57 483 5.00 0.0449
2016-11-10 2016-09-30 13F MPLX COM 55336V100 13,599 -156 -1.13 460 -0.65 0.0447
2016-08-05 2016-06-30 13F MPLX COM 55336V100 13,755 241 1.78 463 15.46 0.0467
2016-05-04 2016-03-31 13F MPLX COM 55336V100 13,514 698 5.45 401 -20.44 0.0434
2016-01-29 2015-12-31 13F MPLX COM 55336V100 12,816 12,816 504 0.0571
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.