Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Williams Cos Inc.COM | COM | $18.7M | 17.2% |
| Mplx LPCOM UNIT REP LTD | COM UNIT REP LTD | $18.3M | 16.8% |
| Enterprise Prods Partners LCOM | COM | $18.2M | 16.7% |
| Energy Transfer L PCOM UT LTD PTN | COM UT LTD PTN | $15.3M | 14.0% |
| Oneok Inc. NewCOM | COM | $12.2M | 11.2% |
| Western Midstream Partners LCOM UNIT LP INT | COM UNIT LP INT | $9.03M | 8.3% |
| Plains GP Hldgs L PLTD PARTNR INT A | LTD PARTNR INT A | $4.39M | 4.0% |
| Hess Midstream LPCL A SHS | CL A SHS | $3.48M | 3.2% |
| Kinder Morgan Inc. DelCOM | COM | $2.84M | 2.6% |
| Targa Res Corp.COM | COM | $2.77M | 2.5% |
| Cheniere Energy Inc.COM NEW | COM NEW | $931K | 0.9% |
| Enbridge Inc.COM | COM | $841K | 0.8% |
| Pembina Pipeline Corp.COM | COM | $819K | 0.8% |
| TC Energy Corp.COM | COM | $783K | 0.7% |
| Antero Midstream Corp.COM | COM | $385K | 0.4% |
- Class
- COM
- Share
- 17.2%
- Class
- COM UNIT REP LTD
- Share
- 16.8%
- Class
- COM
- Share
- 16.7%
- Class
- COM UT LTD PTN
- Share
- 14.0%
- Class
- COM
- Share
- 11.2%
- Class
- COM UNIT LP INT
- Share
- 8.3%
- Class
- LTD PARTNR INT A
- Share
- 4.0%
- Class
- CL A SHS
- Share
- 3.2%
- Class
- COM
- Share
- 2.6%
- Class
- COM
- Share
- 2.5%
- Class
- COM NEW
- Share
- 0.9%
- Class
- COM
- Share
- 0.8%
- Class
- COM
- Share
- 0.8%
- Class
- COM
- Share
- 0.7%
- Class
- COM
- Share
- 0.4%
The share class is shown on a wider screen.
The 15 largest of 15 positions by value, with holdings of the same security combined. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 1588225
- File number
- 028-15640
- Options
- 0 call, 0 put
- In the 25 largest
- 100.0%
- Prior quarter
- $110M at 31 March 2026
- Positions opened
- 0
- Positions closed
- 1
Common questions
What are Heronetta Management’s 13F holdings worth?
$109 million across 15 positions for the quarter ended 30 June 2026.
What is Heronetta Management’s largest 13F holding?
WILLIAMS COS INC (COM) was the largest position at $18.7 million, or 17.2% of reported 13F value, as of 30 June 2026.
How concentrated is Heronetta Management’s 13F portfolio?
The ten largest positions accounted for 96.5% of reported value and the twenty-five largest for 100.0%, across 15 positions as of 30 June 2026.
Does Form 13F show everything Heronetta Management manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does Heronetta Management file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.