Heronetta Management, L.P. holds a concentrated book of 15 stocks worth $108.9M as of Q2 2026 (disclosed Jul 28, 2026, a ~45-day 13F lag). This quarter they opened Cenovus Energy Inc. Their largest long position is Williams Cos Inc at 17% of the equity book. Cloning the disclosed picks since 2024 would be +42% (+22.5%/yr). That is a simulation of the disclosed long book, not audited returns.
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Use Arkolith to show Heronetta Management, L.P.'s latest holdings, largest changes, and filing provenance.
The reported book (valued from quarter-end) returned +44.0%, a 1.6-point gap that is the cost of the ~45-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 the ~45-day reporting lag, 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, no cost basis
Other tracked managers holding the same core names as Heronetta Management, L.P.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| ROYAL BANK OF CANADA | 25 / 15 | $37.6B |
| BlackRock, Inc. | 25 / 15 | $31.9B |
| MORGAN STANLEY | 25 / 15 | $13.8B |
| FMR LLC | 25 / 15 | $12.9B |
| GOLDMAN SACHS GROUP INC | 25 / 15 | $12.9B |
| BANK OF AMERICA CORP /DE/ | 25 / 15 | $11.6B |
| JPMORGAN CHASE & CO | 25 / 15 | $11.4B |
| UBS Group AG | 25 / 15 | $6.4B |
Ranked by how many of Heronetta Management, L.P.'s top 15 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock'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 |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 28, 2026 | 15 | $108.9M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 1, 2026 | 16 | $109.6M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 4, 2026 | 25 | $172.9M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 12, 2025 | 25 | $182.6M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 6, 2025 | 25 | $179.5M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 24 | $183.0M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 6, 2025 | 24 | $175.1M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 31, 2024 | 23 | $163.6M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; 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.