Vault-13

Hill City Capital, LP

BOSTON, MA · CIK 1837343 · 13F filing filed 2026-08-17

SEC-registered investment adviser since 2020 · limited partnership

$4.3bn reported value +53.0% vs Q1 2026
28positions
79.9%in top 10
6 new 10 added 1 reduced 1 sold out vs Q1 2026

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#SecurityTickerShares Value% of portfolioChangeShares change
1 MASTEC INC COM MTZ MTZ 2,155,000 $896.6m20.94% 20.94% UnchangedShares held: Q3 2025 2.2m, Q4 2025 2.2m, Q1 2026 2.2m, Q2 2026 2.2m
2 FIRST SOLAR INC COM FSLR FSLR 2,628,130 $620.1m14.48% 14.48% AddedShares held: Q3 2025 2.1m, Q4 2025 2.1m, Q1 2026 2.2m, Q2 2026 2.6m +450.6k +450,590 20.7%
3 DYCOM INDS INC COM DY DY 1,009,784 $510.5m11.92% 11.92% UnchangedShares held: Q3 2025 1.0m, Q4 2025 1.0m, Q1 2026 1.0m, Q2 2026 1.0m
4 DPC HOLDINGS PLC ORDINARY SHARES DPC DPC 7,693,605 $377.4m8.81% 8.81% NewShares held: Q3 2025 0, Q4 2025 0, Q1 2026 0, Q2 2026 7.7m
5 STMICROELECTRONICS N V NY REGISTRY STM STM 3,100,000 $232.2m5.42% 5.42% AddedShares held: Q3 2025 0, Q4 2025 0, Q1 2026 2.3m, Q2 2026 3.1m +800.0k +800,000 34.8%
6 INTERNATIONAL PAPER CO COM IP IP 5,100,000 $194.3m4.54% 4.54% AddedShares held: Q3 2025 2.0m, Q4 2025 2.4m, Q1 2026 4.2m, Q2 2026 5.1m +900.0k +900,000 21.4%
7 GRANITE CONSTR INC COM GVA GVA 1,110,248 $175.5m4.10% 4.10% AddedShares held: Q3 2025 1.1m, Q4 2025 1.1m, Q1 2026 1.1m, Q2 2026 1.1m +200 +200 0.0%
8 JAMES HARDIE INDS PLC ORD SHS JHX JHX 5,723,900 $149.9m3.50% 3.50% AddedShares held: Q3 2025 4.2m, Q4 2025 5.1m, Q1 2026 5.6m, Q2 2026 5.7m +102.2k +102,200 1.8%
9 BOEING CO COM BA BA 621,583 $134.6m3.14% 3.14% AddedShares held: Q3 2025 0, Q4 2025 518.5k, Q1 2026 551.5k, Q2 2026 621.6k +70.1k +70,100 12.7%
10 CEMEX SAB DE CV SPON ADR NEW CX CX 10,802,750 $129.6m3.03% 3.03% UnchangedShares held: Q3 2025 10.8m, Q4 2025 10.8m, Q1 2026 10.8m, Q2 2026 10.8m
11 CENTURI HOLDINGS INC COM SHS CTRI CTRI 4,030,000 $121.9m2.85% 2.85% UnchangedShares held: Q3 2025 3.8m, Q4 2025 4.0m, Q1 2026 4.0m, Q2 2026 4.0m
12 CRH PLC ORD CRH CRH 1,106,400 $118.4m2.76% 2.76% AddedShares held: Q3 2025 1.0m, Q4 2025 1.0m, Q1 2026 1.1m, Q2 2026 1.1m +30.0k +30,000 2.8%
13 ARRAY TECHNOLOGIES INC COM SHS ARRY ARRY 12,891,300 $95.5m2.23% 2.23% UnchangedShares held: Q3 2025 12.9m, Q4 2025 12.9m, Q1 2026 12.9m, Q2 2026 12.9m
14 ADVANCED DRAIN SYS INC DEL COM WMS WMS 480,000 $75.3m1.76% 1.76% AddedShares held: Q3 2025 150.0k, Q4 2025 160.0k, Q1 2026 370.0k, Q2 2026 480.0k +110.0k +110,000 29.7%
15 ATKORE INC COM ATKR ATKR 724,106 $55.1m1.29% 1.29% ReducedShares held: Q3 2025 728.2k, Q4 2025 728.2k, Q1 2026 728.2k, Q2 2026 724.1k -4.1k -4,100 -0.6%
16 LITTELFUSE INC COM LFUS LFUS 120,000 $54.6m1.28% 1.28% NewShares held: Q3 2025 0, Q4 2025 0, Q1 2026 0, Q2 2026 120.0k
17 BORGWARNER INC COM BWA BWA 802,170 $53.3m1.24% 1.24% NewShares held: Q3 2025 0, Q4 2025 0, Q1 2026 0, Q2 2026 802.2k
18 CORE & MAIN INC CL A CNM CNM 1,028,650 $49.6m1.16% 1.16% AddedShares held: Q3 2025 775.5k, Q4 2025 797.0k, Q1 2026 867.6k, Q2 2026 1.0m +161.1k +161,050 18.6%
19 ATS CORPORATION COM ATS ATS 1,649,857 $47.5m1.11% 1.11% UnchangedShares held: Q3 2025 1.6m, Q4 2025 1.6m, Q1 2026 1.6m, Q2 2026 1.6m
20 WOLFSPEED INC COMMON STOCK WOLF WOLF 935,000 $45.1m1.05% 1.05% AddedShares held: Q3 2025 0, Q4 2025 0, Q1 2026 885.0k, Q2 2026 935.0k +50.0k +50,000 5.7%
21 ENERSYS COM ENS ENS 190,000 $44.4m1.04% 1.04% UnchangedShares held: Q3 2025 467.5k, Q4 2025 467.5k, Q1 2026 190.0k, Q2 2026 190.0k
22 TREX CO INC COM TREX TREX 550,000 $27.5m0.64% 0.64% UnchangedShares held: Q3 2025 0, Q4 2025 552.0k, Q1 2026 550.0k, Q2 2026 550.0k
23 WATERBRIDGE INFRASTRUCTURE L CL A SHS REPSTG WBI WBI 700,000 $24.0m0.56% 0.56% UnchangedShares held: Q3 2025 700.0k, Q4 2025 700.0k, Q1 2026 700.0k, Q2 2026 700.0k
24 TFI INTL INC COM TFII TFII 145,000 $20.8m0.49% 0.49% UnchangedShares held: Q3 2025 145.0k, Q4 2025 145.0k, Q1 2026 145.0k, Q2 2026 145.0k
25 GARRETT MOTION INC COM GTX GTX 500,000 $18.1m0.42% 0.42% NewShares held: Q3 2025 0, Q4 2025 0, Q1 2026 0, Q2 2026 500.0k
26 SOLV ENERGY INC COM SHS CL A MWH MWH 250,000 $8.5m0.20% 0.20% UnchangedShares held: Q3 2025 0, Q4 2025 0, Q1 2026 250.0k, Q2 2026 250.0k
27 EROCK INC CL A COM EROC EROC 110,000 $1.6m0.04% 0.04% NewShares held: Q3 2025 0, Q4 2025 0, Q1 2026 0, Q2 2026 110.0k
28 SITEONE LANDSCAPE SUPPLY INC COM SITE SITE 2,900 $331.8k0.01% 0.01% NewShares held: Q3 2025 100.2k, Q4 2025 99.2k, Q1 2026 0, Q2 2026 2.9k

Sold out since Q1 2026

SecurityTickerShares held beforeValue then
EQUIPMENTSHARE COM INC EQPT EQPT 750,000 $15.3m750.0k shares

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

CompanyTickerStakeChange ScheduleLast filed
ARRAY TECHNOLOGIES INC ARRY · 13G · filed 2026-08-10 ARRY 8.4%≈ $95.5m 13G 2026-08-10
DPC HOLDINGS PLC DPC · 13G · filed 2026-08-11 DPC 5.1%≈ $377.4m new 13G 2026-08-11