Heronetta Management, L.P. - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 4, 2026, for the 2025 Q4 period, Heronetta Management, L.P. held in its portfolio 25 assets valued at $172,946,622 (i.e. $172.95M).

The most valuable assets in the portfolio included: MPLX LP ($17.27M), ENTERPRISE PRODS PARTNERS L ($15.92M), and WILLIAMS COS INC ($15.04M).

The chart below shows the top 10 valuable assets, and the table below shows the top 25 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in Heronetta Management, L.P. Portfolio

MPLX LP

ENTERPRISE PRODS PARTNERS L

WILLIAMS COS INC

ENERGY TRANSFER L P

ENBRIDGE INC

ONEOK INC NEW

TC ENERGY CORP

PEMBINA PIPELINE CORP

CANADIAN PACIFIC KANSAS CITY

CANADIAN NAT RES LTD

Heronetta Management, L.P. - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
MPLX LP	323639	17272613	COM UNIT REP LTD
ENTERPRISE PRODS PARTNERS L	496448	15916123	COM
WILLIAMS COS INC	250152	15036637	COM
ENERGY TRANSFER L P	802129	13227107	COM UT LTD PTN
ENBRIDGE INC	193266	12416911	COM
ONEOK INC NEW	141402	10393047	COM
TC ENERGY CORP	137316	10124299	COM
PEMBINA PIPELINE CORP	197698	10085786	COM
CANADIAN PACIFIC KANSAS CITY	89300	9023765	COM
CANADIAN NAT RES LTD	193600	9000464	COM
WESTERN MIDSTREAM PARTNERS L	206361	8151260	COM UNIT LP INT
SUNCOR ENERGY INC NEW	132000	8041440	COM
CANADIAN NATL RY CO	53400	7249050	COM
FORTIS INC	86000	6136960	COM
EMERA INC	66500	4498060	COM
PLAINS GP HLDGS L P	183325	3508841	LTD PARTNR INT A
HESS MIDSTREAM LP	93905	3239723	CL A SHS
KINDER MORGAN INC DEL	88725	2439050	COM
TRANSALTA CORP	122000	2117920	COM
TARGA RES CORP	10242	1889649	COM
SOUTH BOW CORP	46497	1732677	COM
CHENIERE ENERGY INC	2497	485392	COM NEW
CENOVUS ENERGY INC	15000	348300	COM
CHENIERE ENERGY PARTNERS LP	5810	310719	COM UNIT
ANTERO MIDSTREAM CORP	16910	300829	COM