MPLX LP - Limited Partnership
US ˙ NYSE ˙ US55336V1008

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership36,192 shares
Latest Disclosed Value $ 2,065,477
Silvercrest Asset Management Group Llc reports 7.54% decrease in ownership of MPLX / MPLX LP - Limited Partnership

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 36,192 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $2,065,477 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 39,144 shares of MPLX LP - Limited Partnership. This represents a change in shares of -7.54% during the quarter. The current value of the position is $1,999,970 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 COM UNIT REP COM 55336V100 36,192 -2,952 -7.54 2,065 -1.15 0.0149
2026-02-17 2025-12-31 13F MPLX LP COM UNIT REP COM 55336V100 39,144 -4,320 -9.94 2,089 -3.78 0.0144
2025-11-14 2025-09-30 13F MPLX LP COM UNIT REP COM 55336V100 43,464 -5,956 -12.05 2,171 -14.70 0.0144
2025-08-14 2025-06-30 13F MPLX COM UNIT REP LTD 55336V100 49,420 2,187 4.63 2,546 0.71 0.0171
2025-05-15 2025-03-31 13F MPLX COM UNIT REP LTD 55336V100 47,233 5,320 12.69 2,528 26.03 0.0181
2025-02-14 2024-12-31 13F MPLX COM UNIT REP LTD 55336V100 41,913 -1,309 -3.03 2,006 4.37 0.0134
2024-11-14 2024-09-30 13F MPLX LP COM UNIT REP COM 55336V100 43,222 -1,335 -3.00 1,922 1.27 0.0131
2024-08-15 2024-06-30 13F/A-1 MPLX LP COM UNIT REP COM 55336V100 44,557 -789 -1.74 1,898 0.69 0.0130
2024-08-14 2024-06-30 13F MPLX LP COM UNIT REP COM 55336V100 89,114 43,768 3,795 0.0130
2024-05-15 2024-03-31 13F MPLX LP COM UNIT REP COM 55336V100 45,346 111 0.25 1,885 13.43 0.0127
2024-02-14 2023-12-31 13F MPLX COM UNIT REP LTD 55336V100 45,235 -3,402 -6.99 1,661 -3.99 0.0117
2023-11-14 2023-09-30 13F MPLX COM UNIT REP LTD 55336V100 48,637 -540 -1.10 1,730 3.65 0.0131
2023-08-14 2023-06-30 13F MPLX COM UNIT REP LTD 55336V100 49,177 -18,850 -27.71 1,669 -28.77 0.0119
2023-05-15 2023-03-31 13F MPLX COM UNIT REP LTD 55336V100 68,027 -870 -1.26 2,344 3.58 0.0178
2023-02-14 2022-12-31 13F MPLX COM UNIT REP LTD 55336V100 68,897 -3,540 -4.89 2,263 4.05 0.0174
2022-11-14 2022-09-30 13F MPLX COM UNIT REP LTD 55336V100 72,437 -14,901 -17.06 2,174 -14.61 0.0179
2022-08-15 2022-06-30 13F MPLX COM UNIT REP LTD 55336V100 87,338 21 0.02 2,546 -12.12 0.0194
2022-05-16 2022-03-31 13F MPLX COM UNIT REP LTD 55336V100 87,317 228 0.26 2,897 12.42 0.0188
2022-02-14 2021-12-31 13F MPLX COM UNIT REP LTD 55336V100 87,089 -1,713 -1.93 2,577 1.94 0.0163
2021-11-15 2021-09-30 13F MPLX COM UNIT REP LTD 55336V100 88,802 1,425 1.63 2,528 -2.28 0.0170
2021-08-16 2021-06-30 13F MPLX COM UNIT REP LTD 55336V100 87,377 2,275 2.67 2,587 18.62 0.0170
2021-05-17 2021-03-31 13F MPLX COM UNIT REP LTD 55336V100 85,102 4,682 5.82 2,181 25.27 0.0147
2021-02-16 2020-12-31 13F MPLX COM UNIT REP LTD 55336V100 80,420 -2,373 -2.87 1,741 33.61 0.0127
2020-11-16 2020-09-30 13F MPLX COM UNIT REP LTD 55336V100 82,793 -7,518 -8.32 1,303 -16.53 0.0112
2020-08-14 2020-06-30 13F MPLX COM UNIT REP LTD 55336V100 90,311 270 0.30 1,561 49.24 0.0138
2020-05-15 2020-03-31 13F MPLX COM UNIT REP LTD 55336V100 90,041 -27,199 -23.20 1,046 -64.96 0.0112
2020-02-14 2019-12-31 13F MPLX COM UNIT REP LTD 55336V100 117,240 -13,792 -10.53 2,985 -18.66 0.0232
2019-11-14 2019-09-30 13F MPLX COM UNIT REP LTD 55336V100 131,032 -3,206 -2.39 3,670 -15.07 0.0303
2019-08-14 2019-06-30 13F MPLX COM UNIT REP LTD 55336V100 134,238 -1,766 -1.30 4,321 -3.40 0.0405
2019-05-15 2019-03-31 13F MPLX COM UNIT REP LTD 55336V100 136,004 4,180 3.17 4,473 11.99 0.0440
2019-02-14 2018-12-31 13F MPLX COM UNIT REP LTD 55336V100 131,824 2,688 2.08 3,994 -10.81 0.0440
2018-11-14 2018-09-30 13F MPLX COM UNIT REP LTD 55336V100 129,136 -239,671 -64.99 4,478 -64.43 0.0406
2018-08-14 2018-06-30 13F MPLX COM UNIT REP LTD 55336V100 368,807 -14,511 -3.79 12,591 -0.58 0.1179
2018-05-15 2018-03-31 13F MPLX COM UNIT REP LTD 55336V100 383,318 -4,053 -1.05 12,665 -7.82 0.1235
2018-02-14 2017-12-31 13F MPLX COM UNIT REP LTD 55336V100 387,371 -11,708 -2.93 13,740 -1.66 0.1278
2017-11-14 2017-09-30 13F MPLX COM UNIT REP LTD 55336V100 399,079 -1,021 -0.26 13,972 4.56 0.1393
2017-08-14 2017-06-30 13F MPLX COM UNIT REP LTD 55336V100 400,100 31,869 8.65 13,363 0.58 0.1431
2017-05-15 2017-03-31 13F MPLX COM UNIT REP LTD 55336V100 368,231 64,255 21.14 13,286 26.24 0.1422
2017-02-14 2016-12-31 13F MPLX COM UNIT REP LTD 55336V100 303,976 6,440 2.16 10,524 4.47 0.1179
2016-11-14 2016-09-30 13F MPLX COM UNIT REP LTD 55336V100 297,536 4,274 1.46 10,074 2.15 0.1209
2016-08-15 2016-06-30 13F MPLX COM UNIT REP LTD 55336V100 293,262 50,406 20.76 9,862 36.78 0.1254
2016-05-16 2016-03-31 13F MPLX COM UNIT REP LTD 55336V100 242,856 168,893 228.35 7,210 147.85 0.0993
2016-02-16 2015-12-31 13F MPLX COM UNIT REP LTD 55336V100 73,963 73,963 2,909 0.0403
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.