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Super Investors HALLSTATT ADVISORS L.P.
HA

HALLSTATT ADVISORS L.P.

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$142M
Positions
13
Quarter ended
June 30, 2026
Filed
August 04, 2026

Reported portfolio value by quarter (3 quarters reported)

$142M $126M
Q4 25 Q1 26 Q2 26

$134M in Q4 2025 → $142M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
GC Granite Constr Inc 14.8% Unchanged 132,484 $20.9M
CW Casella Waste Sys Inc Cl A 12.9% Added 15% 189,527 $18.4M
TC Te Connectivity PLC Ord Shs 9.5% Added 26% 66,564 $13.4M
Vistra Corp 9.1% Added 18% 81,444 $12.9M
CH Centuri Holdings Inc Com Shs 8.6% Added 41% 401,715 $12.1M
Clean Harbors Inc 8.4% Trimmed 13% 39,917 $11.9M
SE Solaris Energy Infras Inc Com Cl A 8.3% Added 22% 146,907 $11.8M
AC Amphenol Corp Cl A 8.1% New 64,975 $11.5M
GE Gfl Environmental Inc Sub Vtg Shs 6.9% Trimmed 17% 266,189 $9.79M
SW Secure Waste Infrastructu Corp 5.5% Unchanged 501,743 $7.83M
EM Eagle Matls Inc 3.6% Trimmed 40% 22,463 $5.05M
AS Arcelormittal Sa Luxembourg Ny Registry Sh 2.7% Trimmed 8.0% 63,949 $3.85M
Ats Corporation 1.7% New 83,020 $2.39M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 2 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 04, 2026

Company Action Shares changed Value of change % of portfolio
AC Amphenol Corp Cl A New +64,975 +$11.5M 8.1%
Belden Inc Exited −61,576 −$7.07M —
Marvell Technology Inc Exited −69,828 −$6.92M —
CH Centuri Holdings Inc Com Shs Added +115,994 +$3.51M 8.6%
EM Eagle Matls Inc Trimmed −14,860 −$3.34M 3.6%
TC Te Connectivity PLC Ord Shs Added +13,640 +$2.75M 9.5%
Ats Corporation New +83,020 +$2.39M 1.7%
CW Casella Waste Sys Inc Cl A Added +24,142 +$2.34M 12.9%
SE Solaris Energy Infras Inc Com Cl A Added +26,698 +$2.15M 8.3%
Vistra Corp Added +12,367 +$1.96M 9.1%

Showing the 10 largest of 15 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 07, 2026

Company Action Shares changed Value of change % of portfolio
AH Aercap Holdings Nv Trimmed −83,205 −$11.4M 1.1%
Vistra Corp New +69,077 +$10.4M 8.2%
Idex Corp Exited −46,411 −$8.26M —
SW Secure Waste Infrastructu Corp New +501,743 +$7.87M 6.2%
Belden Inc New +61,576 +$7.07M 5.6%
SE Solaris Energy Infras Inc Com Cl A New +120,209 +$6.79M 5.4%
AS Arcelormittal Sa Luxembourg Ny Registry Sh Trimmed −117,966 −$6.13M 2.9%
HG Hub Group Inc Cl A Exited −133,823 −$5.7M —
EE Emerson Elec Co Exited −41,978 −$5.57M —
Clean Harbors Inc Trimmed −18,986 −$5.44M 10.5%

Showing the 10 largest of 21 changes.

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