Heronetta Management, L.P. holds a concentrated book of 15 reported positions worth $108.9M as of Q2 2026 (disclosed Jul 28, 2026, a ~28-day 13F lag). Their largest long position is Williams Cos Inc at 17% of the reported non-option book. Cloning the disclosed picks since 2024 would be +46% (+22.6%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +48.5%, a 2.4-point gap that is the cost of the ~28-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Heronetta Management, L.P.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~28 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Heronetta Management, L.P.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Kayne Anderson Capital Advisors LP | 15 / 15 | $4.3B |
| Tortoise Capital Advisors, L.L.C. | 15 / 15 | $7.5B |
| Fractal Investments LLC | 13 / 15 | $609.7M |
| RR Advisors, LLC | 10 / 15 | $208.7M |
| Walnut Private Equity Partners, LLC | 5 / 15 | $101.3M |
| Recurrent Investment Advisors LLC | 13 / 15 | $868.7M |
| Cushing Asset Management, LP dba NXG Investment Management | 14 / 15 | $1.2B |
| Energy Income Partners, LLC | 11 / 15 | $2.3B |
Ranked by the share of each fund's own book sitting in the names it shares with Heronetta Management, L.P.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Williams Cos Inc COM | $18.7M | 251.4K | 17.2% | —Held | |
| 2 | MPLX LP COM UNIT REP LTD | $18.3M | 324.0K | 16.8% | —Held | |
| 3 | Enterprise Prods Partners L COM | $18.2M | 495.0K | 16.7% | —Held | |
| 4 | Energy Transfer L P COM UT LTD PTN | $15.3M | 799.2K | 14.0% | —Held | |
| 5 | Oneok Inc New COM | $12.2M | 140.8K | 11.2% | —Held | |
| 6 | Western Midstream Partners L COM UNIT LP INT | $9.0M | 206.4K | 8.3% | —Held | |
| 7 | Plains GP Hldgs L P LTD PARTNR INT A | $4.4M | 181.0K | 4.0% | —Held | |
| 8 | Hess Midstream LP CL A SHS | $3.5M | 92.5K | 3.2% | —Held | |
| 9 | Kinder Morgan Inc Del COM | $2.8M | 88.7K | 2.6% | —Held | |
| 10 | Targa Res Corp COM | $2.8M | 10.3K | 2.5% | —Held | |
| 11 | Cheniere Energy Inc COM NEW | $931K | 3.9K | 0.9% | ▲+56% Added · +1K sh | |
| 12 | Enbridge Inc COM | $841K | 15.5K | 0.8% | —Held | |
| 13 | Pembina Pipeline Corp COM | $819K | 17.7K | 0.8% | —Held | |
| 14 | TC Energy Corp COM | $783K | 11.8K | 0.7% | —Held | |
| 15 | Antero Midstream Corp COM | $385K | 16.9K | 0.4% | —Held |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1588225/holdings"
Use Arkolith to show Heronetta Management, L.P.'s latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 28, 2026 | 28d | 15 | $108.9M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 1, 2026 | 31d | 16 | $109.6M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 4, 2026 | 35d | 25 | $172.9M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 12, 2025 | 43d | 25 | $182.6M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 6, 2025 | 37d | 25 | $179.5M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 45d | 24 | $183.0M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 6, 2025 | 37d | 24 | $175.1M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 31, 2024 | 31d | 23 | $163.6M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.