Hallstatt Advisors L.P. holds a focused book of 13 reported positions worth $141.9M as of Q2 2026 (disclosed Aug 4, 2026, a ~35-day 13F lag). This quarter they opened Amphenol Corp-CL A and trimmed Clean Harbors Inc. Their largest long position is Granite Construction Inc at 15% of the reported non-option book. Cloning the disclosed picks since 2026 would be +7% (+13.0%/yr). That is a simulation of the disclosed long book, not audited returns.
Growth of $10,000 cloning Hallstatt Advisors L.P.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~35 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: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
94% 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 Hallstatt Advisors L.P.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Fifthdelta Ltd | 2 / 13 | $202.9M |
| Candelo Capital Management LP | 4 / 13 | $26.2M |
| Mountain Pacific Investment Advisers LLC | 2 / 13 | $69.7M |
| ACK Asset Management LLC | 2 / 13 | $92.7M |
| 12th Street Asset Management Company, LLC | 3 / 13 | $68.0M |
| Egerton Capital (UK) LLP | 2 / 13 | $935.1M |
| J. Stern & Co. LLP | 2 / 13 | $88.9M |
| Hill City Capital, LP | 3 / 13 | $344.9M |
Ranked by the share of each fund's own book sitting in the names it shares with Hallstatt Advisors 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 | Granite Constr Inc Common Stock | $20.9M | 132.5K | 14.8% | —Held | |
| 2 | Casella Waste Sys Inc CL A Common Stock | $18.4M | 189.5K | 12.9% | ▲+15% Added · +24K sh | |
| 3 | Te Connectivity PLC Ord SHS Common Stock | $13.4M | 66.6K | 9.5% | ▲+26% Added · +14K sh | |
| 4 | Vistra Corp Common Stock | $12.9M | 81.4K | 9.1% | ▲+18% Added · +12K sh | |
| 5 | Centuri Holdings Inc Com SHS Common Stock | $12.1M | 401.7K | 8.6% | ▲+41% Added · +116K sh | |
| 6 | Clean Harbors Inc Common Stock | $11.9M | 39.9K | 8.4% | ▼−13% Reduced · −6K sh | |
| 7 | Solaris Energy Infras Inc Com CL A Common Stock | $11.8M | 146.9K | 8.3% | ▲+22% Added · +27K sh | |
| 8 | Amphenol Corp CL A Common Stock | $11.5M | 65.0K | 8.1% | ▲New New position | |
| 9 | GFL Environmental Inc Sub VTG SHS Common Stock | $9.8M | 266.2K | 6.9% | ▼−17% Reduced · −53K sh | |
| 10 | Secure Waste Infrastructu Corp Common Stock | $7.8M | 501.7K | 5.5% | —Held | |
| 11 | Eagle Matls Inc Common Stock | $5.1M | 22.5K | 3.6% | ▼−40% Reduced · −15K sh | |
| 12 | Arcelormittal Sa Luxembourg NY Registry SH Common Stock | $3.9M | 63.9K | 2.7% | ▼−8.0% Reduced · −6K sh | |
| 13 | Ats Corporation Common Stock | $2.4M | 83.0K | 1.7% | ▲New New position |
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/2040638/holdings"
Use Arkolith to show HALLSTATT ADVISORS 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.
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.