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Peconic Partners 13F Portfolio · William Harnisch

Portfolio Manager
William Harnisch
Performance
+33.59% (2026 Q2)
AUM (13F)
$8.04B
# of Holdings
7
Performance Rank
Allocation (Top 20)
99.5%
Latest filing
Q2 2026

Peconic Partners LLC Holdings Map

Top 6 Peconic Partners LLC Holdings

Top 10 holdings

StockCompany% Port.SharesValueActivityOwnershipAvg. CostDate
PWR
QUANTA SCVS INC
45.19%4.72M$3.40B
-5.73%(-286.99K)
2025-Q2: 5.00M shares2025-Q3: 5.01M shares2025-Q4: 5.01M shares2026-Q1: 5.01M shares2026-Q2: 4.72M shares
$48.21(+1348.15%)
2026-06-30
DY
DYCOM INDS INC
29.87%4.44M$2.25B
+8.02%(+330.00K)
2025-Q2: 3.82M shares2025-Q3: 4.12M shares2025-Q4: 4.11M shares2026-Q1: 4.11M shares2026-Q2: 4.44M shares
$131.54(+229.10%)
2026-06-30
MTZ
MASTEC INC
20.35%3.68M$1.53B
+2.79%(+100.00K)
2025-Q2: 0 shares2025-Q3: 750.0K shares2025-Q4: 1.60M shares2026-Q1: 3.58M shares2026-Q2: 3.68M shares
$231.37(+30.74%)
2026-06-30
FCX
FREEPORT-MCMORAN INC
3.27%3.92M$246.3M
+18.09%(+600.00K)
2025-Q2: 0 shares2025-Q3: 0 shares2025-Q4: 2.00M shares2026-Q1: 3.32M shares2026-Q2: 3.92M shares
$50.40(+36.01%)
2026-06-30
AMC
AMC ENTMT HLDGS INC
0.81%32.00M$60.8M
+966.67%(+29.00M)
2025-Q2: 0 shares2025-Q3: 2.00M shares2025-Q4: 3.00M shares2026-Q1: 3.00M shares2026-Q2: 32.00M shares
$1.56(+60.03%)
2026-06-30
GOOGL
ALPHABET INC
0.01%1.8K$643K
+0.00%(+0)
2025-Q2: 180.0K shares2025-Q3: 1.8K shares2025-Q4: 1.8K shares2026-Q1: 1.8K shares2026-Q2: 1.8K shares
$150.15(+129.59%)
2026-06-30

About Peconic Partners LLC’s portfolio

Peconic Partners LLC reports $8.04B in US-listed equity holdings across 7 positions in its most recent 13F filing. Its largest disclosed positions are PWR (45.2%), DY (29.9%) and MTZ (20.4%). The top 20 holdings account for 99.5% of reported assets. Its disclosed equity book has returned +257.22% on a three-year cumulative basis. Figures reflect the Q2 2026 filing.

Portfolio concentration

Portfolio concentration
PWR — 45.4% ($3.40B)DY — 30.0% ($2.25B)MTZ — 20.4% ($1.53B)FCX — 3.3% ($246.34M)AMC — 0.8% ($60.80M)GOOGL — 0.0% ($643.3K)
100%in top 6
  • PWR45.4%
  • DY30.0%
  • MTZ20.4%
  • FCX3.3%
  • AMC0.8%
  • GOOGL0.0%

Portfolio changes

What the fund actually did

Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.

Added to
4
DYDYCOM INDS INC+8.0%
AMCAMC ENTMT HLDGS INC+966.7%
MTZMASTEC INC+2.8%
FCXFREEPORT-MCMORAN INC+18.1%
Trimmed
1
PWRQUANTA SCVS INC-5.7%

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Source filings

Holdings on this page are parsed from Peconic Partners LLC’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 1050464). View Peconic Partners LLC’s 13F filings on SEC

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