As of 30 Sep 2025, 572 institutional investors reported holding 209,997,586 shares of MPLX LP - COM UNIT REP LTD (MPLX).
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 7,336,519 | $391,386,208 | +$5,723,896 | $53.37 | 51 |
| 2025 Q3 | 209,997,586 | $10,490,526,954 | -$319,439,785 | $49.95 | 572 |
| 2025 Q2 | 216,682,323 | $11,160,989,501 | +$2,028,926 | $51.51 | 569 |
| 2025 Q1 | 217,765,452 | $11,626,105,367 | +$3,639,038 | $53.52 | 561 |
| 2024 Q4 | 218,193,154 | $10,446,031,254 | -$652,817,166 | $47.86 | 532 |
| 2024 Q3 | 231,975,934 | $10,312,339,141 | -$246,295,588 | $44.46 | 498 |
| 2024 Q2 | 238,259,476 | $10,145,135,237 | +$338,322,862 | $42.59 | 487 |
| 2024 Q1 | 225,524,342 | $9,320,548,328 | +$144,201,860 | $41.56 | 474 |
| 2023 Q4 | 221,809,148 | $8,146,241,789 | -$270,905,623 | $36.72 | 439 |
| 2023 Q3 | 229,836,578 | $8,176,118,339 | +$160,598,246 | $35.57 | 394 |
| 2023 Q2 | 224,515,401 | $7,620,833,879 | -$210,129,319 | $33.94 | 367 |
| 2023 Q1 | 229,911,262 | $7,905,808,396 | +$194,558,235 | $34.45 | 377 |
| 2022 Q4 | 224,017,424 | $7,355,991,805 | -$255,141,787 | $32.84 | 352 |
| 2022 Q3 | 232,185,926 | $6,974,491,008 | -$206,401,084 | $30.01 | 339 |
| 2022 Q2 | 239,104,060 | $6,970,972,422 | -$217,207,666 | $29.15 | 338 |
| 2022 Q1 | 247,336,508 | $8,206,305,245 | -$197,177,146 | $33.18 | 348 |
| 2021 Q4 | 252,616,745 | $7,480,013,686 | -$369,006,406 | $29.59 | 340 |
| 2021 Q3 | 263,757,389 | $7,514,046,223 | -$379,907,001 | $28.47 | 308 |
| 2021 Q2 | 276,629,816 | $8,189,905,805 | -$265,141,081 | $29.61 | 299 |
| 2021 Q1 | 286,177,329 | $7,336,791,427 | -$297,270,876 | $25.63 | 304 |
| 2020 Q4 | 297,854,905 | $6,453,774,340 | -$71,864,816 | $21.65 | 290 |
| 2020 Q3 | 302,214,756 | $4,764,434,340 | -$61,260,306 | $15.74 | 271 |
| 2020 Q2 | 305,236,742 | $5,275,216,596 | +$488,812,072 | $17.28 | 271 |
| 2020 Q1 | 315,296,267 | $3,663,927,761 | -$161,720,959 | $11.62 | 284 |
| 2019 Q4 | 324,811,430 | $8,273,313,728 | -$280,930,939 | $25.46 | 325 |
| 2019 Q3 | 334,570,085 | $9,370,826,541 | +$2,151,939,420 | $28.01 | 331 |
| 2019 Q2 | 245,744,708 | $7,907,695,892 | +$345,071,373 | $32.19 | 325 |
| 2019 Q1 | 244,966,213 | $8,057,319,019 | -$51,180,408 | $32.89 | 318 |
| 2018 Q4 | 247,589,517 | $7,503,290,980 | +$23,521,039 | $30.30 | 323 |
| 2018 Q3 | 246,290,489 | $8,541,397,407 | +$14,753,074 | $34.68 | 319 |
| 2018 Q2 | 247,498,313 | $8,451,510,627 | +$326,394,576 | $34.14 | 319 |
| 2018 Q1 | 238,163,459 | $7,868,008,646 | -$826,578,881 | $33.04 | 316 |
| 2017 Q4 | 253,013,584 | $8,974,843,334 | +$249,247,530 | $35.47 | 304 |
| 2017 Q3 | 265,273,321 | $9,286,304,257 | +$292,934,544 | $35.01 | 293 |
| 2017 Q2 | 257,201,121 | $8,590,751,366 | +$353,546,458 | $33.40 | 307 |
| 2017 Q1 | 246,380,611 | $8,852,978,029 | +$33,833,681 | $36.08 | 307 |
| 2016 Q4 | 246,831,218 | $8,533,039,861 | +$479,890,883 | $34.62 | 290 |
| 2016 Q3 | 232,472,886 | $7,865,107,462 | +$708,251,571 | $33.86 | 277 |
| 2016 Q2 | 211,689,011 | $7,118,838,717 | +$104,214,523 | $33.63 | 276 |
| 2016 Q1 | 208,282,059 | $6,183,248,577 | +$248,439,680 | $29.69 | 268 |
| 2015 Q4 | 199,183,476 | $7,768,356,281 | +$6,807,397,753 | $39.33 | 301 |
| 2015 Q3 | 24,768,156 | $946,311,341 | +$93,035,941 | $38.21 | 114 |
| 2015 Q2 | 21,822,006 | $1,557,664,607 | +$14,693,342 | $71.38 | 113 |
| 2015 Q1 | 21,802,694 | $1,597,268,179 | +$12,592,894 | $73.26 | 107 |
| 2014 Q4 | 21,251,419 | $1,561,700,043 | +$204,851,108 | $73.49 | 105 |
| 2014 Q3 | 18,388,862 | $1,083,255,000 | -$16,333,111 | $58.94 | 82 |
| 2014 Q2 | 18,685,259 | $1,204,818,640 | -$23,604,330 | $64.50 | 78 |
| 2014 Q1 | 19,244,749 | $943,087,657 | +$17,828,350 | $48.99 | 73 |