Security key
55336V100
- Security type / class
- Equity / COM UNIT REP LTD
- Total 13F shares
- 50,816,719
- Total 13F value
- $2,863,739,828
- Share change
- +1,543,467
- SEC-reported price per share
- $56.33
- Number of holders
- 266
- Value change
- +$86,785,198
- Number of buys
- 113
- Number of sells
- 84
Report period
Q2 2026
Institutions
266
Top holders
10
MPLX full security history
Ownership snapshot
Full 13F holder table
MPLX LP SEC filings
MPLX LP company facts
Broader feeds
Ownership snapshot
Top reported holders of MPLX - MPLX LP - COM UNIT REP LTD (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
ALPS ADVISORS INC
Disclosed value leader
ALPS ADVISORS INC
Comparable rows
0/15
Latest evidence
31 Mar 2026
13F
Highest disclosed value: $1,544,939,801
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
ALPS ADVISORS INC has the largest disclosed position value at $1.54B.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens ALPS ADVISORS INC's linked filing trail.
Disclosed position value
Top 5
ALPS ADVISORS INC
$1.54B
Invesco Ltd.
$1.04B
Blackstone Inc.
$876.06M
TORTOISE CAPITAL ADVISORS, L.L.C.
$756.78M
GOLDMAN SACHS GROUP INC
$713.81M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ALPS ADVISORS INC |
13F
Company
|
—
class O/S missing
|
$1,544,939,801
27,070,962 shares
|
— | 31 Mar 2026 |
| Invesco Ltd. |
13F
Company
|
—
class O/S missing
|
$1,042,475,205
18,266,606 shares
|
— | 31 Mar 2026 |
| Blackstone Inc. |
13F
Company
|
—
class O/S missing
|
$876,063,479
15,350,683 shares
|
— | 31 Mar 2026 |
| TORTOISE CAPITAL ADVISORS, L.L.C. |
13F
Company
|
—
class O/S missing
|
$756,781,528
13,260,584 shares
|
— | 31 Mar 2026 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
—
class O/S missing
|
$713,805,262
12,507,539 shares
|
— | 31 Mar 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
Company
|
—
class O/S missing
|
$417,709,598
7,319,250 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
266
Shares
50,816,719
Rows available
266
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
643
Q2 2026 holders
266
Holder diff
-377
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|