Who owns MPLX LP?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MPLX from SEC Form 13F filings across 638 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 638 institutions disclosed 196.3M shares of MPLX LP worth $11.06B — about 19.3% of shares outstanding; the largest disclosed holder is ALPS ADVISORS INC. Source: SEC Form 13F filings, parsed by EvidInvest.
638
13F holders
$11.06B
value, 2026 filers
19.3%
of shares outstanding (196.3M sh)
72
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MPLX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | ALPS ADVISORS INC | 28.6M | $1.61B | 7.6% | 2.8% | +5.7% |
| 2 | Invesco Ltd. | 18.3M | $1.03B | 0.1% | 1.8% | 0.0% |
| 3 | Blackstone Inc. | 13.0M | $729.9M | 2.2% | 1.3% | -15.6% |
| 4 | GOLDMAN SACHS GROUP INC | 11.3M | $638.2M | 0.1% | 1.1% | -9.4% |
| 5 | TORTOISE CAPITAL ADVISORS, L.L.C. | 10.5M | $591.5M | 6.0% | 1% | -20.8% |
| 6 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 8.0M | $451.3M | 0.5% | 0.8% | +9.5% |
| 7 | KAYNE ANDERSON CAPITAL ADVISORS LP | 5.9M | $330.3M | 6.5% | 0.6% | -14.1% |
| 8 | Energy Income Partners, LLC | 5.4M | $303.1M | 4.8% | 0.5% | +4.3% |
| 9 | MORGAN STANLEY | 5.3M | $297.2M | 0.0% | 0.5% | +6.3% |
| 10 | UBS Group AG | 5.3M | $296.3M | 0.0% | 0.5% | +0.5% |
| 11 | CHICKASAW CAPITAL MANAGEMENT LLCNEW | 5.2M | $293.6M | 10.6% | 0.5% | new |
| 12 | FMR LLC | 3.9M | $220.9M | 0.0% | 0.4% | +16.7% |
| 13 | JPMORGAN CHASE & CO | 3.4M | $192.7M | 0.0% | 0.3% | -17.1% |
| 14 | Brave Warrior Advisors, LLC | 3.2M | $179.2M | 3.9% | 0.3% | -2.2% |
| 15 | CIBC Bancorp USA Inc. | 3.0M | $168.3M | 0.2% | 0.3% | +13.1% |
| 16 | BANK OF MONTREAL /CAN/ | 2.5M | $143.6M | 0.0% | 0.3% | -36.7% |
| 17 | Clearbridge Investments, LLC | 2.3M | $132.0M | 0.1% | 0.2% | 0.0% |
| 18 | MILLER HOWARD INVESTMENTS INC /NY | 2.3M | $131.0M | 3.5% | 0.2% | +3.8% |
| 19 | WESTWOOD HOLDINGS GROUP INC | 2.1M | $119.1M | 0.9% | 0.2% | -5.5% |
| 20 | BANK OF AMERICA CORP /DE/ | 2.1M | $116.6M | 0.0% | 0.2% | -19.5% |
| 21 | EAGLE GLOBAL ADVISORS LLC | 1.8M | $101.0M | 3.3% | 0.2% | -0.6% |
| 22 | Fractal Investments LLC | 1.7M | $94.0M | 10.8% | 0.2% | -18.7% |
| 23 | ROYAL BANK OF CANADA | 1.6M | $92.1M | 0.0% | 0.2% | +42.0% |
| 24 | DUFF & PHELPS INVESTMENT MANAGEMENT CO | 1.6M | $91.2M | 0.9% | 0.2% | -3.0% |
| 25 | AlphaCore Capital LLC | 1.6M | $91.0M | 1.7% | 0.2% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.