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Heronetta Management, L.P.

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13F filer, CIK 1588225, NEW YORK, NY

Heronetta Management, L.P. reported $108,933,129 across 15 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-07-28. Its ten largest share positions make up 96.55% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000922423-26-000018

Changes against Q1 2026 are not shown: its report omitted holdings under a confidential treatment request (16 positions on file), so every position would read as new.

Period
2026-06-30
Reported value
$109M
Holdings
15
Top 10 weight
96.55%
New
Sold out

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0000922423-26-000018, largest first. % of portfolio is the value over $108,933,129, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
WMBWILLIAMS COS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 277,377 shares; 2024Q4: 277,377 shares; 2025Q1: 276,277 shares; 2025Q2: 276,277 shares; 2025Q3: 276,277 shares; 2025Q4: 250,152 shares; 2026Q1: 251,402 shares; 2026Q2: 251,402 shares 251,402$18.7M17.16%Timeline
MPLXMPLX LPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 358,364 shares; 2024Q4: 355,564 shares; 2025Q1: 356,064 shares; 2025Q2: 356,064 shares; 2025Q3: 356,064 shares; 2025Q4: 323,639 shares; 2026Q1: 324,039 shares; 2026Q2: 324,039 shares 324,039$18.3M16.76%Timeline
EPDENTERPRISE PRODS PARTNERS LQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 558,648 shares; 2024Q4: 554,548 shares; 2025Q1: 549,248 shares; 2025Q2: 549,248 shares; 2025Q3: 549,248 shares; 2025Q4: 496,448 shares; 2026Q1: 495,048 shares; 2026Q2: 495,048 shares 495,048$18.2M16.71%Timeline
ETENERGY TRANSFER L PQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 891,554 shares; 2024Q4: 884,654 shares; 2025Q1: 884,154 shares; 2025Q2: 884,154 shares; 2025Q3: 884,154 shares; 2025Q4: 802,129 shares; 2026Q1: 799,229 shares; 2026Q2: 799,229 shares 799,229$15.3M14.03%Timeline
OKEONEOK INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 158,252 shares; 2024Q4: 158,252 shares; 2025Q1: 156,802 shares; 2025Q2: 156,802 shares; 2025Q3: 155,802 shares; 2025Q4: 141,402 shares; 2026Q1: 140,802 shares; 2026Q2: 140,802 shares 140,802$12.2M11.24%Timeline
WESWESTERN MIDSTREAM PARTNERS LQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 228,673 shares; 2024Q4: 228,673 shares; 2025Q1: 227,773 shares; 2025Q2: 228,586 shares; 2025Q3: 228,586 shares; 2025Q4: 206,361 shares; 2026Q1: 206,361 shares; 2026Q2: 206,361 shares 206,361$9.03M8.29%Timeline
PAGPPLAINS GP HLDGS L PQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 196,395 shares; 2024Q4: 196,395 shares; 2025Q1: 196,395 shares; 2025Q2: 198,525 shares; 2025Q3: 198,525 shares; 2025Q4: 183,325 shares; 2026Q1: 181,025 shares; 2026Q2: 181,025 shares 181,025$4.39M4.03%Timeline
HESMHESS MIDSTREAM LPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 104,455 shares; 2024Q4: 104,455 shares; 2025Q1: 102,955 shares; 2025Q2: 102,955 shares; 2025Q3: 102,955 shares; 2025Q4: 93,905 shares; 2026Q1: 92,505 shares; 2026Q2: 92,505 shares 92,505$3.48M3.19%Timeline
KMIKINDER MORGAN INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 95,125 shares; 2024Q4: 95,125 shares; 2025Q1: 95,125 shares; 2025Q2: 95,125 shares; 2025Q3: 95,125 shares; 2025Q4: 88,725 shares; 2026Q1: 88,725 shares; 2026Q2: 88,725 shares 88,725$2.84M2.6%Timeline
TRGPTARGA RES CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 10,142 shares; 2024Q4: 10,142 shares; 2025Q1: 10,242 shares; 2025Q2: 10,242 shares; 2025Q3: 10,242 shares; 2025Q4: 10,242 shares; 2026Q1: 10,342 shares; 2026Q2: 10,342 shares 10,342$2.77M2.55%Timeline
LNGCHENIERE ENERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,113 shares; 2024Q4: 2,113 shares; 2025Q1: 2,213 shares; 2025Q2: 2,497 shares; 2025Q3: 2,497 shares; 2025Q4: 2,497 shares; 2026Q1: 2,497 shares; 2026Q2: 3,897 shares 3,897$931K0.86%Timeline
ENBENBRIDGE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 197,374 shares; 2024Q4: 197,374 shares; 2025Q1: 197,374 shares; 2025Q2: 193,266 shares; 2025Q3: 193,266 shares; 2025Q4: 193,266 shares; 2026Q1: 15,507 shares; 2026Q2: 15,507 shares 15,507$841K0.77%Timeline
PBAPEMBINA PIPELINE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 195,698 shares; 2024Q4: 197,698 shares; 2025Q1: 197,698 shares; 2025Q2: 197,698 shares; 2025Q3: 197,698 shares; 2025Q4: 197,698 shares; 2026Q1: 17,698 shares; 2026Q2: 17,698 shares 17,698$819K0.75%Timeline
TRPTC ENERGY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 127,486 shares; 2024Q4: 127,486 shares; 2025Q1: 127,486 shares; 2025Q2: 135,316 shares; 2025Q3: 137,316 shares; 2025Q4: 137,316 shares; 2026Q1: 11,816 shares; 2026Q2: 11,816 shares 11,816$783K0.72%Timeline
AMANTERO MIDSTREAM CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 16,910 shares; 2024Q4: 16,910 shares; 2025Q1: 16,910 shares; 2025Q2: 16,910 shares; 2025Q3: 16,910 shares; 2025Q4: 16,910 shares; 2026Q1: 16,910 shares; 2026Q2: 16,910 shares 16,910$385K0.35%Timeline

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0000922423-26-000018 base2026-07-28acceptance time not in the bulk data set