2026 Q2 Portfolio Activity
In 2026 Q2, HALLSTATT ADVISORS L.P. maintained a portfolio of 17 distinct positions. The most significant new addition was AMPHENOL CORP CL A, now representing 8.07% of the total fund value. They heavily accumulated shares in SOLARIS ENERGY INFRAS INC COM , increasing the position by 22.2%. Conversely, HALLSTATT ADVISORS L.P. completely exited their position in BELDEN INC.
Position History
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HALLSTATT ADVISORS L.P.
AUM $142M
Total Positions
17
Quarter
2026 Q2
Top Holding
GVA (14.8%)
Top 10 Concentration
92.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-17 of 17
HALLSTATT ADVISORS L.P. Full Holdings List — 2026 Q2
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
GVA
GRANITE CONSTR ...
|
Industrials | 14.76% | 12.56% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
132,484 | $20,943,071 |
$115.13
+10.4%
|
2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | ||
|
CWST
CASELLA WASTE S...
|
Industrials | 12.95% | 10.38% |
#2
2
Prev: #4
|
7.5 |
—
|
24,142 | 14.6% |
P
S
|
189,527 | $18,378,433 |
$95.83
-5.3%
|
2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | ||
|
TEL
TE CONNECTIVITY...
|
Technology | 9.46% | 8.75% |
#3
2
Prev: #5
|
7.3 |
—
|
13,640 | 25.8% |
P
S
|
66,564 | $13,419,968 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
VST
VISTRA CORP
|
Utilities | 9.10% | 8.22% |
#4
2
Prev: #6
|
6.1 |
—
|
12,367 | 17.9% |
P
S
|
81,444 | $12,919,462 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
CTRI
CENTURI HOLDING...
|
Utilities | 8.56% | 6.60% |
#5
2
Prev: #7
|
6.4 |
—
|
115,994 | 40.6% |
P
S
|
401,715 | $12,147,862 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
CLH
CLEAN HARBORS I...
|
Industrials | 8.40% | 10.46% |
#6
3
Prev: #3
|
3.9 |
—
|
-6,198 | -13.4% |
P
S
|
39,917 | $11,925,204 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
SEI
SOLARIS ENERGY ...
|
Energy | 8.33% | 5.37% |
#7
5
Prev: #12
|
5.8 |
—
|
26,698 | 22.2% |
P
S
|
146,907 | $11,820,137 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
APH
AMPHENOL CORP C...
|
Technology | 8.07% | — |
#8
Prev: #—
|
6.7 |
—
|
64,975 | — |
NEW
|
64,975 | $11,456,392 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
GFL
GFL ENVIRONMENT...
|
Industrials | 6.90% | 10.54% |
#9
7
Prev: #2
|
3.3 |
—
|
-53,083 | -16.6% |
P
S
|
266,189 | $9,793,093 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
SECYF
SECURE WASTE IN...
|
Industrials | 5.52% | 6.23% |
#10
2
Prev: #8
|
3.2 |
—
|
no change | no change |
P
S
|
501,743 | $7,831,959 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
EXP
EAGLE MATLS INC
|
Basic Materials | 3.56% | 5.59% |
#11
2
Prev: #9
|
1.4 |
—
|
-14,860 | -39.8% |
P
S
|
22,463 | $5,054,175 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
MT
ARCELORMITTAL S...
|
Basic Materials | 2.71% | 2.86% |
#12
1
Prev: #13
|
1.6 |
—
|
-5,540 | -8.0% |
P
S
|
63,949 | $3,851,009 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
ATS
ATS CORPORATION
|
Industrials | 1.68% | — |
#13
Prev: #—
|
4.2 |
—
|
83,020 | — |
NEW
|
83,020 | $2,390,633 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
N/A
SIEMENS ENERGY ...
|
|
Unknown | 0.00% | 0.28% |
Sold All 😨
(Was: #15) |
0.0 |
—
|
-2,125 | -100.0% |
CLOSED
|
— | $— | — | 13F Filing | 2026-06-30 | 2026-08-04 | ||
|
AER
AERCAP HOLDINGS...
|
Industrials | 0.00% | 1.09% |
Sold All 😨
(Was: #14) |
0.0 |
—
|
-10,040 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
MRVL
MARVELL TECHNOL...
|
Technology | 0.00% | 5.47% |
Sold All 😨
(Was: #11) |
0.0 |
—
|
-69,828 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-04 | |||
|
BDC
BELDEN INC
|
Technology | 0.00% | 5.59% |
Sold All 😨
(Was: #10) |
0.0 |
—
|
-61,576 | -100.0% |
CLOSED
|
— | $— | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-04 |
Showing 1-17 of 17 holdings