Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

Heronetta Management, L.P. 13F Holdings -- Portfolio & Top Positions (2026-03-31)

Name: Heronetta Management, L.P. 13F Holdings (2026-03-31)
Creator: ko.io

Heronetta Management, L.P. (CIK 1588225) reported $109.6M across 16 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: EPD ($18.7M, 17.10%), MPLX ($18.5M, 16.88%), WMB ($18.3M, 16.70%), ET ($15.4M, 14.08%), OKE ($12.7M, 11.62%). Source: SEC Form 13F.

Rank	Ticker	Company	Value	% Portfolio	Shares	Action
1	EPD	ENTERPRISE PRODS PARTNERS L	$18.7M	17.10%	495,048	Trimmed
2	MPLX	MPLX LP	$18.5M	16.88%	324,039	Added
3	WMB	WILLIAMS COS INC	$18.3M	16.70%	251,402	Added
4	ET	ENERGY TRANSFER L P	$15.4M	14.08%	799,229	Trimmed
5	OKE	ONEOK INC NEW	$12.7M	11.62%	140,802	Trimmed
6	WES	WESTERN MIDSTREAM PARTNERS L	$8.5M	7.75%	206,361	Hold
7	PAGP	PLAINS GP HLDGS L P	$4.4M	4.01%	181,025	Trimmed
8	HESM	HESS MIDSTREAM LP	$3.6M	3.28%	92,505	Trimmed
9	KMI	KINDER MORGAN INC DEL	$3.0M	2.72%	88,725	Hold
10	TRGP	TARGA RES CORP	$2.6M	2.37%	10,342	Added
11	ENB	ENBRIDGE INC	$839,549	0.77%	15,507	Trimmed
12	PBA	PEMBINA PIPELINE CORP	$792,162	0.72%	17,698	Trimmed
13	TRP	TC ENERGY CORP	$739,682	0.68%	11,816	Trimmed
14	LNG	CHENIERE ENERGY INC	$708,549	0.65%	2,497	Hold
15	AM	ANTERO MIDSTREAM CORP	$385,548	0.35%	16,910	Hold
16	CQP	CHENIERE ENERGY PARTNERS L P	$375,500	0.34%	5,810	Hold
17	CNI	CANADIAN NATL RY CO	$0	0.00%	0	Exited
18	CNQ	CANADIAN NAT RES LTD	$0	0.00%	0	Exited
19	CP	CANADIAN PACIFIC KANSAS CITY	$0	0.00%	0	Exited
20	CVE	CENOVUS ENERGY INC	$0	0.00%	0	Exited
21	EMRAF	EMERA INC	$0	0.00%	0	Exited
22	FTS	FORTIS INC	$0	0.00%	0	Exited
23	SOBO	SOUTH BOW CORP	$0	0.00%	0	Exited
24	SU	SUNCOR ENERGY INC NEW	$0	0.00%	0	Exited
25	TAC	TRANSALTA CORP	$0	0.00%	0	Exited

Source: SEC Form 13F filings · as of 2026-03-31