580 tracked 13F filers disclose a position in MPLX as of the latest SEC 13F filings, a combined $10.1B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | ALPS ADVISORS INC | $1.6B | 28.6M | ▲+5.7% Added · +1.5M sh | Q2 2026 | |
| 2 | Blackstone Inc. | $876.1M | 15.4M | ▼−2.3% Reduced · −355K sh | Q1 2026 | |
| 3 | TORTOISE CAPITAL ADVISORS, L.L.C. | $756.8M | 13.3M | ▼−0.4% Reduced · −59K sh | Q1 2026 | |
| 4 | GOLDMAN SACHS GROUP INC | $713.8M | 12.5M | ▲+0.3% Added · +41K sh | Q1 2026 | |
| 5 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $417.7M | 7.3M | ▲+5.9% Added · +411K sh | Q1 2026 | |
| 6 | KAYNE ANDERSON CAPITAL ADVISORS LP | $389.6M | 6.8M | ▼−5.5% Reduced · −401K sh | Q1 2026 | |
| 7 | Energy Income Partners, LLC | $303.1M | 5.4M | ▲+4.3% Added · +223K sh | Q2 2026 | |
| 8 | UBS Group AG | $298.7M | 5.2M | ▼−1.3% Reduced · −71K sh | Q1 2026 | |
| 9 | MORGAN STANLEY | $283.3M | 5.0M | ▼−14% Reduced · −799K sh | Q1 2026 | |
| 10 | JPMORGAN CHASE & CO | $238.4M | 4.1M | ▲+26% Added · +848K sh | Q1 2026 | |
| 11 | BANK OF MONTREAL /CAN/ | $229.8M | 4.0M | ▲714× Added · +4.0M sh | Q1 2026 | |
| 12 | FMR LLC | $191.8M | 3.4M | ▲+101% Added · +1.7M sh | Q1 2026 | |
| 13 | Brave Warrior Advisors, LLC | $185.7M | 3.3M | ▼−27% Reduced · −1.2M sh | Q1 2026 | |
| 14 | CIBC Bancorp USA Inc. | $148.3M | 2.6M | ▲New +2.6M sh | Q1 2026 | |
| 15 | BANK OF AMERICA CORP /DE/ | $146.9M | 2.6M | ▼−70% Reduced · −6.0M sh | Q1 2026 | |
| 16 | Clearbridge Investments, LLC | $133.8M | 2.3M | —Held | Q1 2026 | |
| 17 | MILLER HOWARD INVESTMENTS INC /NY | $131.0M | 2.3M | ▲+3.8% Added · +86K sh | Q2 2026 | |
| 18 | WESTWOOD HOLDINGS GROUP INC | $127.7M | 2.2M | ▲53× Added · +2.2M sh | Q1 2026 | |
| 19 | BROOKFIELD Corp /ON/ | $124.1M | 2.2M | ▼−27% Reduced · −786K sh | Q1 2026 | |
| 20 | EAGLE GLOBAL ADVISORS LLC | $101.0M | 1.8M | ▼−0.6% Reduced · −12K sh | Q2 2026 | |
| 21 | ING GROEP NV | $100.9M | 1.8M | ▼−39% Reduced · −1.1M sh | Q1 2026 | |
| 22 | DUFF & PHELPS INVESTMENT MANAGEMENT CO | $95.2M | 1.7M | ▼−8.9% Reduced · −164K sh | Q1 2026 | |
| 23 | Fractal Investments LLC | $94.0M | 1.7M | ▼−19% Reduced · −383K sh | Q2 2026 | |
| 24 | AlphaCore Capital LLC | $91.0M | 1.6M | ▲~0% Added · +77 sh | Q2 2026 | |
| 25 | CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT | $91.0M | 1.6M | ▼−13% Reduced · −245K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 0 funds opened a new position in MPLX and 29 added to an existing one, while 23 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 350 funds | $98.1B |
| APPLE INCAAPL | 343 funds | $118.3B |
| AMAZON.COM INCAMZN | 343 funds | $76.1B |
| NVIDIA CORPNVDA | 338 funds | $140.3B |
| META PLATFORMS INC-CLASS AMETA | 338 funds | $38.9B |
| ALPHABET INC-CL AGOOGL | 337 funds | $60.5B |
| ALPHABET INC-CL CGOOG | 330 funds | $49.5B |
| BROADCOM INCAVGO | 324 funds | $56.2B |
| JPMORGAN CHASE & COJPM | 324 funds | $29.0B |
| JOHNSON & JOHNSONJNJ | 322 funds | $21.2B |
| ELI LILLY & COLLY | 317 funds | $30.8B |
| CHEVRON CORPCVX | 317 funds | $11.7B |
Ranked by how many of MPLX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 7, 2025 | Lyon Shawn M | Senior VP, Log. & Storage | Buy (P) | 4K | $211K |
| Nov 18, 2024 | HAGEDORN CARL KRISTOPHER | Exec VP & Chief Fin Ofc, Director | Sell (S) | 4K | $189K |
| Apr 19, 2022 | Floerke Gregory Scott | Exec. VP and COO | Sell (S) | 3K | $88K |
| Feb 7, 2022 | Floerke Gregory Scott | Exec. VP and COO | Sell (S) | 3K | $83K |
| Feb 2, 2022 | SEMPLE FRANK M | Director | Sell (S) | 28K | $952K |
| Feb 1, 2022 | SEMPLE FRANK M | Director | Sell (S) | 28K | $924K |
| Nov 8, 2021 | Floerke Gregory Scott | Exec. VP and COO | Sell (S) | 3K | $78K |
| Nov 8, 2021 | Floerke Gregory Scott | Exec. VP and COO | Sell (S) | 3K | $78K |
| Nov 8, 2021 | SEMPLE FRANK M | Director | Sell (S) | 27K | $864K |
| May 6, 2021 | Floerke Gregory Scott | Exec. VP and COO | Sell (S) | 3K | $68K |
| Jan 13, 2021 | Floerke Gregory Scott | COO and Exec. VP | Sell (S) | 3K | $63K |
| Dec 4, 2020 | Floerke Gregory Scott | COO and Exec. VP | Sell (S) | 3K | $58K |
Connected entities for MPLX
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MPLX/capital-change-brief"
Use Arkolith's capital_change_brief for MPLX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MPLX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.