William Harnisch Peconic Partners
William Harnisch is the founder of Peconic Partners, a concentrated investment firm known for high-conviction equity positions. The firm’s portfolio often differs sharply from broad market benchmarks, reflecting a willingness to concentrate capital. Harnisch’s disclosures are tracked by investors interested in bold, research-driven concentration.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
MasTec
MTZ
|
+$48.7M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$36.4M |
| 3 |
Dominion Energy
D
|
+$30.6M |
| 4 |
Duke Energy
DUK
|
+$20M |
| 5 |
Carnival Corporation Ltd
CCL
|
+$13M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Utilities Select Sector SPDR ETF
XLU
|
+$110M |
| 2 |
Micron Technology
MU
|
+$23.2M |
| 3 |
NextEra Energy
NEE
|
+$17.3M |
| 4 |
Southern Company
SO
|
+$5.51M |
| 5 |
FirstEnergy
FE
|
+$3.86M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 89.43% |
| 2 | Consumer Discretionary | 3.52% |
| 3 | Technology | 3.33% |
| 4 | Utilities | 2.14% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1
Quanta Services
PWR
$96.1B
| $1.42B | 60.98% |
5,598,565
| – | – |
|
2
Dycom Industries
DY
$11.8B
| $612M | 26.24% |
3,627,655
+31,073
| +0.9% | +$4.85M |
|
|
3
Carnival Corporation Ltd
CCL
$35.2B
| $81.3M | 3.48% |
4,342,000
+842,000
| +24% | +$13M |
|
|
4
Micron Technology
MU
$1.09T
| $77.7M | 3.33% |
591,000
-184,000
| -24% | -$23.2M |
|
|
5
MasTec
MTZ
$21.4B
| $51.5M | 2.21% |
+481,720
| New | +$48.7M |
|
|
6
iShares 20+ Year Treasury Bond ETF
TLT
$45.5B
| $36.7M | 1.57% |
+399,900
| New | +$36.4M |
|
|
7
Dominion Energy
D
$58.6B
| $29.4M | 1.26% |
+600,000
| New | +$30.6M |
|
|
8
Duke Energy
DUK
$93.4B
| $20M | 0.86% |
+200,000
| New | +$20M |
|
9
Amazon
AMZN
$2.79T
| $769K | 0.03% |
3,980
| – | – |
|
|
10
NextEra Energy
NEE
$174B
| $459K | 0.02% |
6,485
-243,515
| -97% | -$17.3M |
|
|
11
State Street Utilities Select Sector SPDR ETF
XLU
$22.2B
| $199K | 0.01% |
5,850
-3,217,118
| -100% | -$110M |
|
|
12
FirstEnergy
FE
$26.6B
| – | – |
-100,000
| Closed | -$3.86M |
|
|
13
Southern Company
SO
$102B
| – | – |
-76,819
| Closed | -$5.51M |
|
14
Uber
UBER
$161B
| – | – |
-10,330
| Closed | -$795K |
|
Similar funds
William Harnisch's Q2 2024 Portfolio in Review
As of Q2 2024, William Harnisch held 14 positions worth $2.33B, up 3.6% from $2.25B the previous quarter. Its ten largest holdings account for 100% of the portfolio.
William Harnisch's Q2 2024 filing shows 4 new, 2 increased, 3 reduced and 3 closed positions. Its largest new stake was MasTec: 481,720 shares worth $51.5M. The largest sale was State Street Utilities Select Sector SPDR ETF, an estimated $110M.
By sector, the portfolio is most concentrated in Industrials at 89% of assets, up from 88% a quarter earlier, followed by Consumer Discretionary and Technology.
- William Harnisch's largest Q2 2024 buy was MasTec: 481,720 shares worth $51.5M.
- William Harnisch added most to Carnival Corporation Ltd in Q2 2024, an estimated $13M increase.
- William Harnisch's biggest Q2 2024 reduction was State Street Utilities Select Sector SPDR ETF, cutting an estimated $110M.
- William Harnisch fully exited Southern Company in Q2 2024, selling an estimated $5.51M.
- William Harnisch's ten largest holdings make up 100% of its $2.33B portfolio in Q2 2024.
- William Harnisch opened 4 new positions and closed 3 in Q2 2024.
- William Harnisch's portfolio value rose 3.6% quarter-over-quarter to $2.33B.
Based on Peconic Partners's 13F filing for Q2 2024, filed 14 Aug 2024.