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 |
State Street Utilities Select Sector SPDR ETF
XLU
|
+$101M |
| 2 |
Micron Technology
MU
|
+$61.1M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$56.9M |
| 4 |
Dycom Industries
DY
|
+$40.8M |
| 5 |
Quanta Services
PWR
|
+$15.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
WCC
WESCO International
WCC
|
+$426M |
| 2 |
Cleveland-Cliffs
CLF
|
+$42.4M |
| 3 |
Amazon
AMZN
|
+$16.5M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$14M |
| 5 |
Cinemark Holdings
CNK
|
+$7.04M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 87.51% |
| 2 | Technology | 4.09% |
| 3 | Consumer Discretionary | 2.57% |
| 4 | Utilities | 1.13% |
| 5 | Communication Services | 0% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Quanta Services
PWR
$96.1B
| $1.45B | 64.59% |
5,598,565
+70,200
| +1% | +$15.5M |
|
|
2
Dycom Industries
DY
$11.8B
| $516M | 22.92% |
3,596,582
+330,900
| +10% | +$40.8M |
|
|
3
State Street Utilities Select Sector SPDR ETF
XLU
$22.2B
| $106M | 4.7% |
+3,222,968
| New | +$101M |
|
|
4
Micron Technology
MU
$1.09T
| $91.4M | 4.06% |
775,000
+675,000
| +675% | +$61.1M |
|
|
5
Carnival Corporation Ltd
CCL
$35.2B
| $57.2M | 2.54% |
+3,500,000
| New | +$56.9M |
|
6
NextEra Energy
NEE
$174B
| $16M | 0.71% |
+250,000
| New | +$14.6M |
|
7
Southern Company
SO
$102B
| $5.51M | 0.24% |
+76,819
| New | +$5.3M |
|
8
FirstEnergy
FE
$26.6B
| $3.86M | 0.17% |
+100,000
| New | +$3.74M |
|
9
Uber
UBER
$161B
| $795K | 0.04% |
10,330
| – | – |
|
|
10
Amazon
AMZN
$2.79T
| $718K | 0.03% |
3,980
-98,935
| -96% | -$16.5M |
|
|
11
Cleveland-Cliffs
CLF
$6.43B
| – | – |
-2,074,927
| Closed | -$42.4M |
|
|
12
Cinemark Holdings
CNK
$4.24B
| – | – |
-500,000
| Closed | -$7.04M |
|
|
13
Alphabet (Google) Class A
GOOGL
$4.22T
| – | – |
-100,000
| Closed | -$14M |
|
|
WCC
14
WESCO International
WCC
$17B
| – | – |
-2,450,348
| Closed | -$426M |
|
Similar funds
William Harnisch's Q1 2024 Portfolio in Review
As of Q1 2024, William Harnisch held 14 positions worth $2.25B, up 8.1% from $2.08B the previous quarter. Its ten largest holdings account for 100% of the portfolio.
William Harnisch withdrew a net $207M in Q1 2024, closing 4 positions and reducing 1 holding. Its most notable exit was WESCO International, an estimated $426M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 88% of assets, down from 96% a quarter earlier, followed by Technology and Consumer Discretionary.
Against the trend, William Harnisch opened a new position in State Street Utilities Select Sector SPDR ETF worth $106M.
- William Harnisch's largest Q1 2024 buy was State Street Utilities Select Sector SPDR ETF: 3,222,968 shares worth $106M.
- William Harnisch added most to Micron Technology in Q1 2024, an estimated $61.1M increase.
- William Harnisch's biggest Q1 2024 reduction was Amazon, cutting an estimated $16.5M.
- William Harnisch fully exited WESCO International in Q1 2024, selling an estimated $426M.
- William Harnisch's ten largest holdings make up 100% of its $2.25B portfolio in Q1 2024.
- William Harnisch opened 5 new positions and closed 4 in Q1 2024.
- William Harnisch's portfolio value rose 8.1% quarter-over-quarter to $2.25B.
Based on Peconic Partners's 13F filing for Q1 2024, filed 15 May 2024.