MPLXMPLX LP

CSNew York Stock Exchange (XNYS)·USD

Identity

Security key: 18723
Ticker: MPLX
Type: CS — Common Stock
Exchange: New York Stock Exchange(XNYS)
Venue group: NYSE
Operating MIC: XNYS
Market: stocks
Locale: us
Currency: USD
Listed: 2012-10-26
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: MPLX

Detail

Enriched 2026-08-14 20:47

Market cap: $60,770,663,564.94
Shares outstanding (class): 1,013,858,251
Shares outstanding (weighted): 1,013,858,251
SIC: 4610 PIPE LINES (NO NATURAL GAS)
Employees: 5,762
Location: FINDLAY, OH
Homepage: https://www.mplx.com
Description: MPLX is a partnership that owns pipelines and gathering and processing assets with extensive holdings in the Appalachian and Permian regions. The asset base is made up of crude oil and refined products assets dropped down from Marathon Petroleum, its sponsor, and natural gas and natural gas liquids gathering and processing assets that were purchased or built.

Market cap and share counts drift.

Funds holding this security

32 funds · 37 positions · $313.42M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
Center Coast Brookfield Midstream Focus Fund Brookfield Investment Funds	—	$57.09M	4.84%	1,000,277 NS	FIGI
N/A —	—	$47.32M	4.41%	829,136 NS	FIGI
COHEN & STEERS INFRASTRUCTURE FUND INC —	—	$42.19M	1.34%	739,265 NS	FIGI
USCF Midstream Energy Income Fund USCF ETF Trust	UMI	$23.22M	4.55%	406,895 NS	FIGI
NEOS MLP & Energy Infrastructure High Income ETF NEOS ETF Trust	MLPI	$18.99M	3.95%	332,814 NS	FIGI
Global Shareholder Yield Fund John Hancock Funds III	—	$18.13M	1.37%	317,757 NS	FIGI
Catalyst Energy Infrastructure Fund MUTUAL FUND SERIES TRUST	—	$15.85M	3.87%	277,648 NS	FIGI
Polen Dividend Income ETF Elevation Series Trust	DIVZ	$13.21M	5.70%	231,535 NS	FIGI
Nuveen Real Asset Income Fund Nuveen Investment Funds, Inc.	—	$12.21M	1.05%	214,021 NS	FIGI
NYLIM VP Epoch U.S. Equity Yield Portfolio NEW YORK LIFE INVESTMENTS VP FUNDS TRUST	—	$9.48M	1.06%	166,121 NS	FIGI
ALPS \| Alerian Energy Infrastructure Portfolio ALPS VARIABLE INVESTMENT TRUST	—	$7.42M	4.75%	129,964 NS	FIGI
Nuveen Real Asset Income and Growth Fund —	—	$7.01M	1.48%	122,813 NS	FIGI
VanEck Energy Income ETF VanEck ETF Trust	EINC	$6.01M	4.29%	105,324 NS	FIGI
JNL/PPM America High Yield Bond Fund JNL Series Trust	—	$4.98M	0.39%	87,200 NS	FIGI
Multi-Manager Global Listed Infrastructure Fund Northern Funds	—	$4.84M	0.48%	84,825 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERMPLX
FIGI_COMPOSITEBBG0035TJGV4
FIGI_SHARE_CLASSBBG0035TJHL3
CIK0001552000
ISINUS55336V1008
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Energy
Industry: Oil & Gas Midstream
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: MPLX is a midstream MLP operating oil and gas pipelines, fitting the ENERGY sector and OIL_GAS_MIDSTREAM industry.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.