MPLX LP - Limited Partnership
US ˙ NYSE ˙ US55336V1008

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionDiversified Trust Co
Latest Disclosed Ownership12,478 shares
Latest Disclosed Value $ 712,119
Diversified Trust Co ownership in MPLX / MPLX LP - Limited Partnership

On April 16, 2026 - Diversified Trust Co filed a 13F-HR form disclosing ownership of 12,478 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $712,119 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 12,478 shares of MPLX LP - Limited Partnership. This represents a change in shares of 0.00% during the quarter. The current value of the position is $689,534 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-16 2026-03-31 13F MPLX COM UNIT REP LTD 55336V100 12,478 0 0.00 712 7.07 0.0087
2026-01-09 2025-12-31 13F MPLX COM UNIT REP LTD 55336V100 12,478 12,478 666 0.0123
2022-07-12 2022-06-30 13F MPLX COM UNIT REP LTD 55336V100 0 -9,096 -100.00 0 -100.00
2022-04-07 2022-03-31 13F MPLX COM UNIT REP LTD 55336V100 9,096 0 0.00 302 12.27 0.0105
2022-01-13 2021-12-31 13F MPLX COM UNIT REP LTD 55336V100 9,096 -125 -1.36 269 2.28 0.0089
2022-01-13 2021-09-30 13F MPLX COM UNIT REP LTD 55336V100 9,221 0 0.00 263 -3.66 0.0095
2021-07-20 2021-06-30 13F MPLX COM UNIT REP LTD 55336V100 9,221 0 0.00 273 15.68 0.0098
2021-05-10 2021-03-31 13F MPLX COM UNIT REP LTD 55336V100 9,221 -5,726 -38.31 236 -27.16 0.0091
2021-01-08 2020-12-31 13F MPLX COM UNIT REP LTD 55336V100 14,947 -1,147 -7.13 324 28.06 0.0131
2020-10-15 2020-09-30 13F MPLX COM UNIT REP LTD 55336V100 16,094 -9,806 -37.86 253 -43.53 0.0117
2020-07-07 2020-06-30 13F MPLX COM UNIT REP LTD 55336V100 25,900 3,311 14.66 448 70.99 0.0226
2020-04-10 2020-03-31 13F MPLX COM UNIT REP LTD 55336V100 22,589 -7,067 -23.83 262 -65.30 0.0153
2020-01-09 2019-12-31 13F MPLX COM UNIT REP LTD 55336V100 29,656 -34,879 -54.05 755 -58.24 0.0338
2019-10-09 2019-09-30 13F MPLX COM UNIT REP LTD 55336V100 64,535 13,033 25.31 1,808 9.05 0.0848
2019-07-12 2019-06-30 13F MPLX COM UNIT REP LTD 55336V100 51,502 3,092 6.39 1,658 4.15 0.0788
2019-05-22 2019-03-31 13F MPLX COM UNIT REP LTD 55336V100 48,410 -13,956 -22.38 1,592 -15.77 0.0775
2019-01-18 2018-12-31 13F MPLX COM UNIT REP LTD 55336V100 62,366 -712 -1.13 1,890 -13.62 0.1056
2018-11-26 2018-09-30 13F MPLX COM UNIT REP LTD 55336V100 63,078 2,291 3.77 2,188 5.45 0.1090
2018-07-23 2018-06-30 13F MPLX COM UNIT REP LTD 55336V100 60,787 2,179 3.72 2,075 7.18 0.1321
2018-06-01 2018-03-31 13F MPLX COM UNIT REP LTD 55336V100 58,608 3,302 5.97 1,936 -1.33 0.1236
2018-01-19 2017-12-31 13F MPLX COM UNIT REP LTD 55336V100 55,306 -13,127 -19.18 1,962 -18.11 0.1200
2017-10-17 2017-09-30 13F MPLX COM UNIT REP LTD 55336V100 68,433 4,405 6.88 2,396 12.01 0.1831
2017-07-18 2017-06-30 13F MPLX COM UNIT REP LTD 55336V100 64,028 -815 -1.26 2,139 -8.59 0.1738
2017-04-21 2017-03-31 13F MPLX COM UNIT REP LTD 55336V100 64,843 -2,105 -3.14 2,340 0.95 0.1796
2017-02-22 2016-12-31 13F MPLX COM UNIT REP LTD 55336V100 66,948 -6,398 -8.72 2,318 -6.65 0.1968
2016-11-03 2016-09-30 13F MPLX COM UNIT REP LTD 55336V100 73,346 1,941 2.72 2,483 3.42 0.2901
2016-07-26 2016-06-30 13F MPLX COM UNIT REP LTD 55336V100 71,405 -7,887 -9.95 2,401 2.00 0.2770
2016-05-02 2016-03-31 13F MPLX COM UNIT REP LTD 55336V100 79,292 14,287 21.98 2,354 -7.94 0.2592
2016-01-27 2015-12-31 13F MPLX COM UNIT REP LTD 55336V100 65,005 49,847 328.85 2,557 341.62 0.2740
2015-11-02 2015-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,158 -3,587 -19.14 579 -56.73 0.0622
2015-07-15 2015-06-30 13F MPLX COM UNIT REP LTD 55336V100 18,745 -511 -2.65 1,338 -5.17 0.1264
2015-04-29 2015-03-31 13F MPLX COM UNIT REP LTD 55336V100 19,256 19,256 0.00 1,411 0.1222
2015-02-04 2014-12-31 13F MPLX COM UNIT REP LTD 55336V100 0 -22,226 -100.00 0 -100.00
2014-08-15 2014-06-30 13F MPLX COM UNIT REP LTD 55336V100 22,226 22,226 1,434 0.1196
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.