Position in MPLX
as of Mar 31, 2026
· filed May 1, 2026
Position Value
$18,492,905
+$1,220,292 QoQ
Shares Held
324,039
+0.1% QoQ
Ownership
0.032%
of shares outstanding
% of Portfolio
16.88%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in MPLX Over Time
Shares Held
Position Value (USD)
Position in Oil & Gas Midstream
Energy · as of Mar 31, 2026Heronetta Management, L.P. holds $109,570,592 across 16 Oil & Gas Midstream names. MPLX ranks #2 (16.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | EPD |
Enterprise Products Partners L.P.
|
495,048 | $18,732,616 | |
| 2 | MPLX |
Mplx LP
This page
|
324,039 | $18,492,905 | |
| 3 | WMB |
Williams Companies, Inc.
|
251,402 | $18,297,037 | |
| 4 | ET |
Energy Transfer LP
|
799,229 | $15,425,119 | |
| 5 | OKE |
Oneok Inc /New/
|
140,802 | $12,727,092 | |
| 6 | WES |
Western Midstream Partners, LP
|
206,361 | $8,495,882 | |
| 7 | PAGP |
Plains Gp Holdings LP
|
181,025 | $4,395,287 | |
| 8 | HESM |
Hess Midstream LP
|
92,505 | $3,595,669 |
All Filings in MPLX
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25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $18,492,905 | 324,039 | Shares | Sole | 2026-05-01 | |
| 2025-12-31 | $17,272,613 | 323,639 | Shares | Sole | 2026-02-04 | |
| 2025-09-30 | $17,785,396 | 356,064 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $18,340,856 | 356,064 | Shares | Sole | 2025-08-06 | |
| 2025-03-31 | $19,056,545 | 356,064 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $17,017,293 | 355,564 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $15,932,863 | 358,364 | Shares | Sole | 2024-10-31 | |
| 2024-06-30 | $15,262,722 | 358,364 | Shares | Sole | 2024-07-30 | |
| 2024-03-31 | $14,839,579 | 357,064 | Shares | Sole | 2024-05-01 | |
| 2023-12-31 | $13,302,334 | 362,264 | Shares | Sole | 2024-01-25 | |
| 2023-09-30 | $12,017,822 | 337,864 | Shares | Sole | 2023-11-02 | |
| 2023-06-30 | $11,290,616 | 332,664 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $11,439,777 | 332,069 | Shares | Sole | 2023-05-10 | |
| 2022-12-31 | $15,123,903 | 460,533 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $13,136,487 | 437,737 | Shares | Sole | 2022-10-27 | |
| 2022-06-30 | $12,690,073 | 435,337 | Shares | Sole | 2022-08-05 | |
| 2022-03-31 | $13,973,325 | 421,137 | Shares | Sole | 2022-04-29 | |
| 2021-12-31 | $12,343,083 | 417,137 | Shares | Sole | 2022-02-03 | |
| 2021-09-30 | $11,747,775 | 412,637 | Shares | Sole | 2021-10-27 | |
| 2021-06-30 | $11,871,744 | 400,937 | Shares | Sole | 2021-08-04 | |
| 2021-03-31 | $10,022,278 | 391,037 | Shares | Sole | 2021-04-29 | |
| 2020-12-31 | $8,310,071 | 383,837 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $5,805,494 | 368,837 | Shares | Sole | 2020-11-10 | |
| 2020-06-30 | $6,190,335 | 358,237 | Shares | Sole | 2020-07-24 | |
| 2020-03-31 | $4,147,607 | 356,937 | Shares | Sole | 2020-05-08 | |
| No filing history on record for this holder in this stock. | ||||||