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

SecurityMPLX / MPLX LP - Limited Partnership
InstitutionMoors & Cabot, Inc.
Latest Disclosed Ownership13,943 shares
Latest Disclosed Value $ 795,727
Moors & Cabot, Inc. reports 3.79% decrease in ownership of MPLX / MPLX LP - Limited Partnership

On May 8, 2026 - Moors & Cabot, Inc. filed a 13F-HR form disclosing ownership of 13,943 shares of MPLX LP - Limited Partnership (US:MPLX) valued at $795,727 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 14,493 shares of MPLX LP - Limited Partnership. This represents a change in shares of -3.79% during the quarter. The current value of the position is $785,270 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)
2026-05-08 2026-03-31 13F MPLX COM UNIT REP LTD 55336V100 13,943 -550 -3.79 796 2.85 0.0341
2026-02-10 2025-12-31 13F MPLX COM UNIT REP LTD 55336V100 14,493 0 0.00 773 6.92 0.0331
2025-11-14 2025-09-30 13F MPLX COM UNIT REP LTD 55336V100 14,493 -4,677 -24.40 724 -26.75 0.0316
2025-08-06 2025-06-30 13F MPLX COM UNIT REP LTD 55336V100 19,170 -500 -2.54 987 -6.18 0.0459
2025-05-08 2025-03-31 13F MPLX COM UNIT REP LTD 55336V100 19,670 500 2.61 1,053 14.72 0.0534
2025-02-07 2024-12-31 13F MPLX COM UNIT REP LTD 55336V100 19,170 0 0.00 917 7.63 0.0436
2024-11-08 2024-09-30 13F MPLX COM UNIT REP LTD 55336V100 19,170 0 0.00 852 4.41 0.0423
2024-08-09 2024-06-30 13F MPLX COM UNIT REP LTD 55336V100 19,170 1,924 11.16 816 13.97 0.0435
2024-05-08 2024-03-31 13F MPLX COM UNIT REP LTD 55336V100 17,246 -924 -5.09 717 7.35 0.0389
2024-02-14 2023-12-31 13F MPLX COM UNIT REP LTD 55336V100 18,170 474 2.68 667 6.04 0.0416
2023-11-08 2023-09-30 13F MPLX COM UNIT REP LTD 55336V100 17,696 1,000 5.99 629 11.13 0.0427
2023-08-10 2023-06-30 13F MPLX COM UNIT REP LTD 55336V100 16,696 0 0.00 567 -1.57 0.0376
2023-05-05 2023-03-31 13F MPLX COM UNIT REP LTD 55336V100 16,696 0 0.00 575 4.93 0.0395
2023-02-10 2022-12-31 13F/A-1 MPLX COM UNIT REP LTD 55336V100 16,696 0 0.00 548 9.38 0.0382
2023-02-07 2022-12-31 13F MPLX COM UNIT REP LTD 55336V100 17,296 600 512 0.0341
2022-11-08 2022-09-30 13F MPLX COM UNIT REP LTD 55336V100 16,696 0 0.00 501 2.87 0.0382
2022-08-08 2022-06-30 13F MPLX COM UNIT REP LTD 55336V100 16,696 -1,575 -8.62 487 -19.64 0.0350
2022-05-13 2022-03-31 13F MPLX COM UNIT REP LTD 55336V100 18,271 975 5.64 606 18.36 0.0373
2022-02-14 2021-12-31 13F MPLX COM UNIT REP LTD 55336V100 17,296 876 5.33 512 9.17 0.0315
2021-12-08 2021-09-30 13F/A-1 MPLX COM UNIT REP LTD 55336V100 16,420 -2,365 -12.59 469 -15.65 0.0295
2021-11-05 2021-09-30 13F MPLX COM UNIT REP LTD 55336V100 25,000 6,215 26 0.0019
2021-08-10 2021-06-30 13F MPLX COM UNIT REP LTD 55336V100 18,785 4,000 27.05 556 46.32 0.0390
2021-05-12 2021-03-31 13F MPLX COM UNIT REP LTD 55336V100 14,785 0 0.00 380 18.75 0.0291
2021-02-11 2020-12-31 13F MPLX COM UNIT REP LTD 55336V100 14,785 -567 -3.69 320 32.23 0.0269
2020-11-09 2020-09-30 13F MPLX COM UNIT REP LTD 55336V100 15,352 -4,000 -20.67 242 -27.76 0.0228
2020-08-13 2020-06-30 13F MPLX COM UNIT REP LTD 55336V100 19,352 400 2.11 335 52.27 0.0357
2020-05-12 2020-03-31 13F MPLX COM UNIT REP LTD 55336V100 18,952 -1,400 -6.88 220 -57.53 0.0320
2020-01-28 2019-12-31 13F MPLX COM UNIT REP LTD 55336V100 20,352 0 0.00 518 -8.96 0.0520
2019-10-22 2019-09-30 13F MPLX COM UNIT REP LTD 55336V100 20,352 8,869 77.24 569 53.78 0.0627
2019-07-18 2019-06-30 13F MPLX COM UNIT REP LTD 55336V100 11,483 334 3.00 370 0.82 0.0469
2019-05-06 2019-03-31 13F/A-1 MPLX COM UNIT REP LTD 55336V100 11,149 -1,000 -8.23 367 -0.54 0.0499
2019-05-01 2019-03-31 13F MPLX COM UNIT REP LTD 55336V100 22,298 10,149 734
2019-02-13 2018-12-31 13F MPLX COM UNIT REP LTD 55336V100 12,149 -5,995 -33.04 369 -41.43 0.0579
2018-11-14 2018-09-30 13F MPLX COM UNIT REP LTD 55336V100 18,144 6,995 62.74 630 66.23 0.0769
2018-08-14 2018-06-30 13F MPLX COM UNIT REP LTD 55336V100 11,149 0 0.00 379 2.99 0.0511
2018-05-18 2018-03-31 13F MPLX COM UNIT REP LTD 55336V100 11,149 -1,654 -12.92 368 -18.76 0.0486
2018-02-13 2017-12-31 13F MPLX COM UNIT REP LTD 55336V100 12,803 616 5.05 453 6.34 0.0600
2017-11-16 2017-09-30 13F MPLX COM UNIT REP LTD 55336V100 12,187 -28 -0.23 426 4.67 0.0616
2017-08-15 2017-06-30 13F MPLX COM UNIT REP LTD 55336V100 12,215 1,014 9.05 407 0.74 0.0676
2017-05-15 2017-03-31 13F MPLX COM UNIT REP LTD 55336V100 11,201 -7,309 -39.49 404 -36.87 0.0682
2017-02-13 2016-12-31 13F MPLX COM UNIT REP LTD 55336V100 18,510 -8,009 -30.20 640 -28.73 0.1053
2016-11-14 2016-09-30 13F MPLX COM UNIT REP LTD 55336V100 26,519 -2,391 -8.27 898 -7.61 0.1501
2016-08-08 2016-06-30 13F MPLX COM UNIT REP LTD 55336V100 28,910 -2,711 -8.57 972 3.51 0.1708
2016-05-10 2016-03-31 13F MPLX COM UNIT REP LTD 55336V100 31,621 448 1.44 939 -23.35 0.1695
2016-02-09 2015-12-31 13F MPLX COM UNIT REP LTD 55336V100 31,173 31,173 0.00 1,225 0.2243
2015-11-17 2015-09-30 13F MPLX COM UNIT REP LTD 55336V100 0 0 0 0.0000
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.