ALPS ADVISORS INC
Rank #1
2.63%
- Shares
- 27.07M
- Change
- +26.64M
- Change %
- +62.02%
- Filing
- Mar 31, 2026
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · ENERGY · Holders
MPLX LP (MPLX) Institutional Ownership & Insider Trading History
Top MPLX institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Ownership read
MPLX insider sentiment: Net selling.
ALPS ADVISORS INC is the largest loaded institutional holder. 41 sale rows and 0 purchase rows are visible in the loaded Form 4 history. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
MPLX
Purchases—
Sales83.86K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
27.07M
ALPS ADVISORS INC
Insider stance
Net selling
$4.65M sold / — bought
Latest filing
May 15, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data feed
- Latest filing
- May 15, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 63
- 45 decreased in loaded rows
- Insider rows
- 120
- Market data feed
Top 120 institutional holders
MPLX LP (MPLX) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where the ownership feed supplies them.
INVESCO LTD.
Rank #2
1.77%
- Shares
- 18.27M
- Change
- +78.73K
- Change %
- +43.00%
- Filing
- Mar 31, 2026
Increased
BLACKSTONE INC.
Rank #3
1.49%
- Shares
- 15.35M
- Change
- -354.80K
- Change %
- -2.26%
- Filing
- Mar 31, 2026
Decreased
TORTOISE CAPITAL ADVISORS
Rank #4
1.29%
- Shares
- 13.26M
- Change
- -59.33K
- Change %
- -45.00%
- Filing
- Mar 31, 2026
Decreased
GOLDMAN SACHS GROUP INC
Rank #5
1.21%
- Shares
- 12.51M
- Change
- +40.55K
- Change %
- +33.00%
- Filing
- Mar 31, 2026
Increased
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD.
Rank #6
0.71%
- Shares
- 7.32M
- Change
- +410.87K
- Change %
- +5.95%
- Filing
- Mar 31, 2026
Increased
KAYNE ANDERSON CAPITAL ADVISORS LP
Rank #7
0.66%
- Shares
- 6.83M
- Change
- -400.83K
- Change %
- -5.55%
- Filing
- Mar 31, 2026
Decreased
UBS GROUP AG
Rank #8
0.51%
- Shares
- 5.23M
- Change
- -71.23K
- Change %
- -1.34%
- Filing
- Mar 31, 2026
Decreased
CHICKASAW CAPITAL MANAGEMENT LLC
Rank #9
0.51%
- Shares
- 5.22M
- Change
- -207.22K
- Change %
- -3.82%
- Filing
- Mar 31, 2026
Decreased
ENERGY INCOME PARTNERS
Rank #10
0.50%
- Shares
- 5.16M
- Change
- -142.25K
- Change %
- -2.68%
- Filing
- Mar 31, 2026
Decreased
MORGAN STANLEY
Rank #11
0.48%
- Shares
- 4.96M
- Change
- -798.91K
- Change %
- -13.86%
- Filing
- Mar 31, 2026
Decreased
JPMORGAN CHASE & CO
Rank #12
0.40%
- Shares
- 4.13M
- Change
- +847.52K
- Change %
- +25.79%
- Filing
- Mar 31, 2026
Increased
BANK OF MONTREAL
Rank #13
0.39%
- Shares
- 4.03M
- Change
- +4.02M
- Change %
- —
- Filing
- Mar 31, 2026
Increased
FMR LLC
Rank #14
0.33%
- Shares
- 3.36M
- Change
- +1.69M
- Change %
- +1.01%
- Filing
- Mar 31, 2026
Increased
BRAVE WARRIOR ADVISORS
Rank #15
0.32%
- Shares
- 3.25M
- Change
- -1.22M
- Change %
- -27.28%
- Filing
- Mar 31, 2026
Decreased
CIBC PRIVATE WEALTH GROUP LLC
Rank #16
0.26%
- Shares
- 2.72M
- Change
- +36.11K
- Change %
- +1.34%
- Filing
- Dec 31, 2025
Increased
CIBC BANCORP USA INC.
Rank #17
0.26%
- Shares
- 2.64M
- Change
- +2.64M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
BANK OF AMERICA CORP
Rank #18
0.25%
- Shares
- 2.57M
- Change
- -5.96M
- Change %
- -69.84%
- Filing
- Mar 31, 2026
Decreased
CLEARBRIDGE INVESTMENTS
Rank #19
0.23%
- Shares
- 2.34M
- Change
- —
- Change %
- 0.00%
- Filing
- Mar 31, 2026
Unchanged
MILLER HOWARD INVESTMENTS INC
Rank #20
0.22%
- Shares
- 2.24M
- Change
- -76.23K
- Change %
- -3.29%
- Filing
- Mar 31, 2026
Decreased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | ALPS ADVISORS INC | 2.63% | 27.07M | +26.64M Increased | +62.02% | Mar 31, 2026 |
| 2 | 1.77% | 18.27M | +78.73K Increased | +43.00% | Mar 31, 2026 | |
| 3 | BLACKSTONE INC. | 1.49% | 15.35M | -354.80K Decreased | -2.26% | Mar 31, 2026 |
| 4 | TORTOISE CAPITAL ADVISORS | 1.29% | 13.26M | -59.33K Decreased | -45.00% | Mar 31, 2026 |
| 5 | 1.21% | 12.51M | +40.55K Increased | +33.00% | Mar 31, 2026 | |
| 6 | MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. | 0.71% | 7.32M | +410.87K Increased | +5.95% | Mar 31, 2026 |
| 7 | KAYNE ANDERSON CAPITAL ADVISORS LP | 0.66% | 6.83M | -400.83K Decreased | -5.55% | Mar 31, 2026 |
| 8 | 0.51% | 5.23M | -71.23K Decreased | -1.34% | Mar 31, 2026 | |
| 9 | CHICKASAW CAPITAL MANAGEMENT LLC | 0.51% | 5.22M | -207.22K Decreased | -3.82% | Mar 31, 2026 |
| 10 | ENERGY INCOME PARTNERS | 0.50% | 5.16M | -142.25K Decreased | -2.68% | Mar 31, 2026 |
| 11 | 0.48% | 4.96M | -798.91K Decreased | -13.86% | Mar 31, 2026 | |
| 12 | 0.40% | 4.13M | +847.52K Increased | +25.79% | Mar 31, 2026 | |
| 13 | BANK OF MONTREAL | 0.39% | 4.03M | +4.02M Increased | — | Mar 31, 2026 |
| 14 | 0.33% | 3.36M | +1.69M Increased | +1.01% | Mar 31, 2026 | |
| 15 | BRAVE WARRIOR ADVISORS | 0.32% | 3.25M | -1.22M Decreased | -27.28% | Mar 31, 2026 |
| 16 | CIBC PRIVATE WEALTH GROUP LLC | 0.26% | 2.72M | +36.11K Increased | +1.34% | Dec 31, 2025 |
| 17 | CIBC BANCORP USA INC. | 0.26% | 2.64M | +2.64M Initiated | — | Mar 31, 2026 |
| 18 | 0.25% | 2.57M | -5.96M Decreased | -69.84% | Mar 31, 2026 | |
| 19 | CLEARBRIDGE INVESTMENTS | 0.23% | 2.34M | — Unchanged | 0.00% | Mar 31, 2026 |
| 20 | MILLER HOWARD INVESTMENTS INC | 0.22% | 2.24M | -76.23K Decreased | -3.29% | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
MPLX LP (MPLX) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
BREVES, CHRISTINE S
Director
- Shares
- 277
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
HELMS, CHRISTOPHER A
Director
- Shares
- 1.42K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
SEMPLE, FRANK M
Director
- Shares
- 1.19K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
STICE, J MICHAEL
Director
- Shares
- 1.10K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
PEIFFER, GARRY L.
Director
- Shares
- 1.30K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
WALKER, RAY N JR
Director
- Shares
- 78
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
SURMA, JOHN P
Director
- Shares
- 1.66K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
PEIFFER, GARRY L.
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Apr 30, 2026
WALKER, RAY N JR
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Apr 30, 2026
SURMA, JOHN P
Director
- Shares
- 2.58K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Apr 30, 2026
STICE, J MICHAEL
Director
- Shares
- 2.58K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Apr 30, 2026
BREVES, CHRISTINE S
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Apr 30, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | BREVES, CHRISTINE S Director | <0.01% | Award / grant | 277 | No cash value | No cash value | May 15, 2026 |
| 2 | HELMS, CHRISTOPHER A Director | <0.01% | Award / grant | 1.42K | No cash value | No cash value | May 15, 2026 |
| 3 | SEMPLE, FRANK M Director | <0.01% | Award / grant | 1.19K | No cash value | No cash value | May 15, 2026 |
| 4 | STICE, J MICHAEL Director | <0.01% | Award / grant | 1.10K | No cash value | No cash value | May 15, 2026 |
| 5 | PEIFFER, GARRY L. Director | <0.01% | Award / grant | 1.30K | No cash value | No cash value | May 15, 2026 |
| 6 | WALKER, RAY N JR Director | <0.01% | Award / grant | 78 | No cash value | No cash value | May 15, 2026 |
| 7 | SURMA, JOHN P Director | <0.01% | Award / grant | 1.66K | No cash value | No cash value | May 15, 2026 |
| 8 | PEIFFER, GARRY L. Director | <0.01% | Award / grant | 2.25K | No cash value | No cash value | Apr 30, 2026 |
| 9 | WALKER, RAY N JR Director | <0.01% | Award / grant | 2.25K | No cash value | No cash value | Apr 30, 2026 |
| 10 | SURMA, JOHN P Director | <0.01% | Award / grant | 2.58K | No cash value | No cash value | Apr 30, 2026 |
| 11 | STICE, J MICHAEL Director | <0.01% | Award / grant | 2.58K | No cash value | No cash value | Apr 30, 2026 |
| 12 | BREVES, CHRISTINE S Director | <0.01% | Award / grant | 2.25K | No cash value | No cash value | Apr 30, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest MPLX shareholders?
ALPS ADVISORS INC is the largest institutional holder in the loaded MPLX ownership feed, with 27.07 million shares, or about 2.63% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of MPLX?
The current TECHi snapshot has 120 loaded institutional rows for MPLX LP. 63 rows are marked increased or initiated, while 45 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see MPLX LP insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for MPLX, with the latest insider filing dated May 15, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are MPLX insiders buying or selling?
The loaded MPLX Form 4 rows currently read Net selling: 41 sale rows and 0 purchase rows. Awards, gifts, conversions, and tax withholding are shown separately because they do not carry the same signal as open-market buying or selling.
Who is the most active MPLX insider in the loaded filings?
MANNEN, MARYANN T. is the most active insider by absolute share movement in the loaded MPLX rows, with 125,001 shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.