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Hallstatt Advisors L.P.

SEC CIK
0002040638
Latest filing
Aug 3, 2026

The latest 13F from Hallstatt Advisors L.P. covers Q2 2026 (filed Aug 3, 2026): 13 long positions worth $141.9M. The top 10 holdings make up 92.0% of the portfolio, and the largest is Granite Construction Inc (GVA) at 14.8%. Livermore has 3 filings on Form 13F from this institution, going back to Q4 2025.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
2
Est. +$13.8M
Added
5
Est. +$12.7M
Reduced
4
Est. −$7.48M
Sold out
4
Est. −$15.7M

Top 5 holdings

Share of this quarter's portfolio value

  1. GVAGranite Construction Inc
    14.8%$20.9MHistory
  2. CWSTCasella Waste Systems Inc
    12.9%$18.4MHistory
  3. TELTE Connectivity plc
    9.5%$13.4MHistory
  4. VSTVistra Corp.
    9.1%$12.9MHistory
  5. CTRICenturi Holdings, Inc.
    8.6%$12.1MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. APHAmphenol Corp
    +$11.5MNewHistory
  2. CTRICenturi Holdings, Inc.
    +$3.51MAddedHistory
  3. TELTE Connectivity plc
    +$2.75MAddedHistory
  4. ATSATS Corp
    +$2.39MNewHistory
  5. CWSTCasella Waste Systems Inc
    +$2.34MAddedHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. APHAmphenol Corp
    +8.07 pp0.0% → 8.1%History
  2. SEISolaris Energy Infrastructure, Inc.
    +2.95 pp5.4% → 8.3%History
  3. CWSTCasella Waste Systems Inc
    +2.57 pp10.4% → 12.9%History
  4. CTRICenturi Holdings, Inc.
    +1.96 pp6.6% → 8.6%History
  5. ATSATS Corp
    +1.68 pp0.0% → 1.7%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. BDCBelden Inc.
    −$7.07MSold outHistory
  2. MRVLMarvell Technology, Inc.
    −$6.92MSold outHistory
  3. EXPEagle Materials Inc
    −$3.34MReducedHistory
  4. GFLGFL Environmental Inc.
    −$1.95MReducedHistory
  5. CLHClean Harbors Inc
    −$1.85MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. BDCBelden Inc.
    −5.59 pp5.6% → 0.0%History
  2. MRVLMarvell Technology, Inc.
    −5.47 pp5.5% → 0.0%History
  3. GFLGFL Environmental Inc.
    −3.64 pp10.5% → 6.9%History
  4. CLHClean Harbors Inc
    −2.06 pp10.5% → 8.4%History
  5. EXPEagle Materials Inc
    −2.03 pp5.6% → 3.6%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$141.9M
+$15.5M (+12.3%) vs. prior quarter
Positions
13
−2 vs. prior quarter
Top 10 concentration
92.0%
Top 10 as share of value
Turnover
17.3%
Q2 2026, one quarter
Average holding period
2.6 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2025), so positions held before then are understated.

13F filings by quarter

3 quarters, going back to Q4 2025. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $141.9M (Q2 2026)

Q4 2025: $134.2MQ1 2026: $126.4MQ2 2026: $141.9M
Q4 2025Q2 2026
13F filings of Hallstatt Advisors L.P. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 3, 202613$141.9MGVACWSTTELvs. Q1 2026SEC
Q1 2026May 7, 202615$126.4MGVAGFLCLHvs. Q4 2025SEC
Q4 2025Feb 10, 202616$134.2MGVACLHCWST–SEC