Heronetta Management, L.P. — 13F Holdings & Portfolio
CIK 1588225 · latest 13F-HR filed 2026-05-01
Heronetta Management, L.P. manages $109.6M in 13F-reported U.S. long-equity assets across 16 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are EPD (17.10%), MPLX (16.88%), WMB (16.70%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 0 new positions, exited 9, added to 12, and trimmed 3.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$109.6M
Long-equity book
16
Distinct positions
2026-03-31
Filed 2026-05-01
+0 / −9 / ↑12 / ↓3
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- WILLIAMS COS INC$3.3M +21.7%
- ENTERPRISE PRODS PARTNERS L$2.8M +17.7%
- ONEOK INC NEW$2.3M +22.5%
- ENERGY TRANSFER L P$2.2M +16.6%
- MPLX LP$1.2M +7.1%
Top Trims
- ENBRIDGE INC-$11.6M -93.2%
- TC ENERGY CORP-$9.4M -92.7%
- PEMBINA PIPELINE CORP-$9.3M -92.1%
Exited Positions
- CANADIAN PACIFIC KANSAS CITY$9.0M
- CANADIAN NAT RES LTD$9.0M
- SUNCOR ENERGY INC NEW$8.0M
- CANADIAN NATL RY CO$7.2M
- FORTIS INC$6.1M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ENTERPRISE PRODS PARTNERS L | EPD | 293792107 | $18.7M | 17.10% | 495,048 | SH |
| 2 | MPLX LP | MPLX | 55336V100 | $18.5M | 16.88% | 324,039 | SH |
| 3 | WILLIAMS COS INC | WMB | 969457100 | $18.3M | 16.70% | 251,402 | SH |
| 4 | ENERGY TRANSFER L P | ET | 29273V100 | $15.4M | 14.08% | 799,229 | SH |
| 5 | ONEOK INC NEW | OKE | 682680103 | $12.7M | 11.62% | 140,802 | SH |
| 6 | WESTERN MIDSTREAM PARTNERS L | WES | 958669103 | $8.5M | 7.75% | 206,361 | SH |
| 7 | PLAINS GP HLDGS L P | PAGP | 72651A207 | $4.4M | 4.01% | 181,025 | SH |
| 8 | HESS MIDSTREAM LP | HESM | 428103105 | $3.6M | 3.28% | 92,505 | SH |
| 9 | KINDER MORGAN INC DEL | KMI | 49456B101 | $3.0M | 2.72% | 88,725 | SH |
| 10 | TARGA RES CORP | TRGP | 87612G101 | $2.6M | 2.37% | 10,342 | SH |
| 11 | ENBRIDGE INC | ENB | 29250N105 | $839.5K | 0.77% | 15,507 | SH |
| 12 | PEMBINA PIPELINE CORP | PBA | 706327103 | $792.2K | 0.72% | 17,698 | SH |
| 13 | TC ENERGY CORP | TRP | 87807B107 | $739.7K | 0.68% | 11,816 | SH |
| 14 | CHENIERE ENERGY INC | LNG | 16411R208 | $708.5K | 0.65% | 2,497 | SH |
| 15 | ANTERO MIDSTREAM CORP | AM | 03676B102 | $385.5K | 0.35% | 16,910 | SH |
| 16 | CHENIERE ENERGY PARTNERS L P | CQP | 16411Q101 | $375.5K | 0.34% | 5,810 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-01 | $109.6M | 16 | 0000922423-26-000014 |
| 2025-12-31 | 2026-02-04 | $172.9M | 25 | 0000922423-26-000012 |