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WH

William Harnisch Peconic Partners

AUM $8.04B
1-Year Est. Return 107.18%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+17.21%
1 Year Est. Return
+107.18%
3 Year Est. Return
+300.02%
5 Year Est. Return
+691.8%
10 Year Est. Return
+3,202.62%
AUM
$1.76B
AUM Growth
+$212M
Cap. Flow
-$6.24M
Cap. Flow %
-0.35%
Top 10 Hldgs %
98.77%
Holding
46
New
13
Increased
5
Reduced
2
Closed
12

Top Buys

Rank Stock Value
1
UBER icon
Uber
UBER
+$41.5M
2
RH icon
RH
RH
+$25.6M
3
DY icon
Dycom Industries
DY
+$15.8M
4
CLF icon
Cleveland-Cliffs
CLF
+$9.9M
5
RIOT icon
Riot Platforms
RIOT
+$9.76M

Top Sells

Rank Stock Value
1
GM icon
General Motors
GM
+$75.8M
2
MTZ icon
MasTec
MTZ
+$20M
3
CZR icon
Caesars Entertainment
CZR
+$7.51M
4
PENN icon
PENN Entertainment
PENN
+$5.64M
5
ENPH icon
Enphase Energy
ENPH
+$5.3M

Sector Composition

Rank Sector Weight
1 Industrials 88.73%
2 Technology 5.62%
3 Consumer Discretionary 1.65%
4 Materials 1.44%
5 Real Estate 0.96%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PWR icon
1
Quanta Services
PWR
$96.1B
$927M 52.61%
5,563,365
+418
+0% +$64.3K
WCC
2
WESCO International
WCC
$17B
$384M 21.79%
2,485,143
– –
DY icon
3
Dycom Industries
DY
$11.8B
$252M 14.3%
2,690,382
+170,490
+7% +$15.8M
UBER icon
4
Uber
UBER
$161B
$94.5M 5.36%
2,980,437
+1,308,737
+78% +$41.5M
RH icon
5
RH
RH
$2.9B
$27.9M 1.58%
+88,100
New +$25.6M
SBAC icon
6
SBA Communications
SBAC
$19.4B
$16.3M 0.92%
62,359
– –
RIOT icon
7
Riot Platforms
RIOT
$7.44B
$15M 0.85%
+1,500,000
New +$9.76M
CLF icon
8
Cleveland-Cliffs
CLF
$6.43B
$9.16M 0.52%
+500,000
New +$9.9M
FCX icon
9
Freeport-McMoran
FCX
$110B
$8.8M 0.5%
+215,000
New +$8.94M
FANG icon
10
Diamondback Energy
FANG
$59B
$5.86M 0.33%
43,360
-6,640
-13% -$925K
SMG icon
11
ScottsMiracle-Gro
SMG
$3.55B
$3.49M 0.2%
+50,000
New +$3.6M
TECK icon
12
Teck Resources
TECK
$33.9B
$2.56M 0.15%
70,000
+10,000
+17% +$397K
ABBV icon
13
AbbVie
ABBV
$468B
$2.39M 0.14%
15,000
– –
CSCO icon
14
Cisco
CSCO
$438B
$2.09M 0.12%
+40,000
New +$1.95M
NXPI icon
15
NXP Semiconductors
NXPI
$56.9B
$1.86M 0.11%
10,000
– –
XIFR
16
XPLR Infrastructure LP
XIFR
$1.05B
$1.22M 0.07%
20,000
+10,000
+100% +$688K
GM icon
17
General Motors
GM
$77.2B
$1.11M 0.06%
30,234
-2,005,624
-99% -$75.8M
DEN
18
DELISTED
Denbury Inc.
DEN
$876K 0.05%
10,000
– –
XLE icon
19
State Street Energy Select Sector SPDR ETF
XLE
$41.7B
$828K 0.05%
+20,000
New +$855K
AMR icon
20
Alpha Metallurgical Resources
AMR
$2.66B
$780K 0.04%
5,000
– –
ARCH
21
DELISTED
Arch Resources, Inc.
ARCH
$657K 0.04%
5,000
– –
GTLS
22
DELISTED
Chart Industries
GTLS
$627K 0.04%
+5,000
New +$644K
CCI icon
23
Crown Castle
CCI
$32.1B
$552K 0.03%
4,126
– –
HCC icon
24
Warrior Met Coal
HCC
$5.64B
$551K 0.03%
+15,000
New +$555K
MTDR icon
25
Matador Resources
MTDR
$7.22B
$477K 0.03%
+10,000
New +$562K
1
2

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William Harnisch's Q1 2023 Portfolio in Review

As of Q1 2023, William Harnisch held 46 positions worth $1.76B, up 14% from $1.55B the previous quarter. Its ten largest holdings account for 99% of the portfolio.

William Harnisch's Q1 2023 filing shows 13 new, 5 increased, 2 reduced and 12 closed positions. Its largest new stake was RH: 88,100 shares worth $27.9M. The largest sale was General Motors, an estimated $75.8M.

By sector, the portfolio is most concentrated in Industrials at 89% of assets, up from 89% a quarter earlier, followed by Technology and Consumer Discretionary.

  • William Harnisch's largest Q1 2023 buy was RH: 88,100 shares worth $27.9M.
  • William Harnisch added most to Uber in Q1 2023, an estimated $41.5M increase.
  • William Harnisch's biggest Q1 2023 reduction was General Motors, cutting an estimated $75.8M.
  • William Harnisch fully exited MasTec in Q1 2023, selling an estimated $20M.
  • William Harnisch's ten largest holdings make up 99% of its $1.76B portfolio in Q1 2023.
  • William Harnisch opened 13 new positions and closed 12 in Q1 2023.
  • William Harnisch's portfolio value rose 14% quarter-over-quarter to $1.76B.

Based on Peconic Partners's 13F filing for Q1 2023, filed 15 May 2023.