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 |
Quanta Services
PWR
|
+$163M |
| 2 |
NUAN
Nuance Communications, Inc.
NUAN
|
+$11.8M |
| 3 |
United Rentals
URI
|
+$11.3M |
| 4 |
WCC
WESCO International
WCC
|
+$7.77M |
| 5 |
ScottsMiracle-Gro
SMG
|
+$3.48M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NFX
Newfield Exploration
NFX
|
+$37.6M |
| 2 |
EOG Resources
EOG
|
+$21.3M |
| 3 |
JUNO
Juno Therapeutics, Inc.
JUNO
|
+$19.8M |
| 4 |
Walmart Inc
WMT
|
+$9.74M |
| 5 |
TJX Companies
TJX
|
+$9.05M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 80.92% |
| 2 | Energy | 6.99% |
| 3 | Real Estate | 4% |
| 4 | Technology | 3.1% |
| 5 | Healthcare | 2.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1
MasTec
MTZ
$21.4B
| $211M | 40.78% |
4,483,036
-150,000
| -3% | -$7.6M |
|
|
2
Quanta Services
PWR
$96.1B
| $155M | 29.89% |
+4,500,381
| New | +$163M |
|
|
3
United Rentals
URI
$68.4B
| $35.1M | 6.78% |
203,008
+63,500
| +46% | +$11.3M |
|
|
WPX
4
DELISTED
WPX Energy, Inc.
WPX
| $28.9M | 5.6% |
1,958,417
-36,428
| -2% | -$525K |
|
|
WCC
5
WESCO International
WCC
$17B
| $17.3M | 3.34% |
278,310
+120,610
| +76% | +$7.77M |
|
|
FLXN
6
DELISTED
Flexion Therapeutics, Inc.
FLXN
| $15M | 2.9% |
668,500
+20,252
| +3% | +$494K |
|
7
SBA Communications
SBAC
$19.4B
| $14.5M | 2.79% |
84,559
-20,000
| -19% | -$3.31M |
|
|
NUAN
8
DELISTED
Nuance Communications, Inc.
NUAN
| $11M | 2.13% |
+808,500
| New | +$11.8M |
|
|
9
ScottsMiracle-Gro
SMG
$3.55B
| $3.14M | 0.61% |
+36,571
| New | +$3.48M |
|
10
Crown Castle
CCI
$32.1B
| $3.01M | 0.58% |
27,500
-25,000
| -48% | -$2.71M |
|
11
Century Communities
CCS
$1.98B
| $3M | 0.58% |
+100,000
| New | +$3.18M |
|
12
Vanguard Financials ETF
VFH
$13.8B
| $2.78M | 0.54% |
40,000
| – | – |
|
13
Diamondback Energy
FANG
$59B
| $2.53M | 0.49% |
20,000
| – | – |
|
|
CXO
14
DELISTED
CONCHO RESOURCES INC.
CXO
| $2.25M | 0.44% |
15,000
| – | – |
|
15
Apple
AAPL
$4.51T
| $2.19M | 0.42% |
52,200
| – | – |
|
16
Flotek Industries
FTK
$894M
| $1.9M | 0.37% |
52,023
| – | – |
|
|
HCR
17
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $1.19M | 0.23% |
112,380
| – | – |
|
18
NXP Semiconductors
NXPI
$56.9B
| $1.17M | 0.23% |
10,000
| – | – |
|
|
ORBC
19
DELISTED
ORBCOMM, Inc.
ORBC
| $937K | 0.18% |
100,000
+45,000
| +82% | +$478K |
|
20
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.93B
| $704K | 0.14% |
5,000
-55,978
| -92% | -$8.02M |
|
|
LOGM
21
DELISTED
LogMein, Inc.
LOGM
| $653K | 0.13% |
5,647
| – | – |
|
22
Dycom Industries
DY
$11.8B
| $646K | 0.12% |
6,000
-13,000
| -68% | -$1.48M |
|
23
Warrior Met Coal
HCC
$5.64B
| $560K | 0.11% |
20,000
-20,000
| -50% | -$579K |
|
|
OCLR
24
DELISTED
Oclaro Inc.
OCLR
| $478K | 0.09% |
50,000
+10,000
| +25% | +$75.1K |
|
|
RSPP
25
DELISTED
RSP Permian, Inc.
RSPP
| $469K | 0.09% |
+10,000
| New | +$394K |
|
Similar funds
William Harnisch's Q1 2018 Portfolio in Review
As of Q1 2018, William Harnisch held 63 positions worth $517M, down 26% from $696M the previous quarter. Its ten largest holdings account for 95% of the portfolio.
William Harnisch withdrew a net $160M in Q1 2018, closing 21 positions and reducing 9 holdings. Its most notable exit was Newfield Exploration, an estimated $37.6M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 81% of assets, up from 39% a quarter earlier, followed by Energy and Real Estate.
Against the trend, William Harnisch opened a new position in Quanta Services worth $155M.
- William Harnisch's largest Q1 2018 buy was Quanta Services: 4,500,381 shares worth $155M.
- William Harnisch added most to United Rentals in Q1 2018, an estimated $11.3M increase.
- William Harnisch's biggest Q1 2018 reduction was State Street SPDR S&P Oil & Gas Exploration & Production ETF, cutting an estimated $8.02M.
- William Harnisch fully exited Newfield Exploration in Q1 2018, selling an estimated $37.6M.
- William Harnisch's ten largest holdings make up 95% of its $517M portfolio in Q1 2018.
- William Harnisch opened 13 new positions and closed 21 in Q1 2018.
- William Harnisch's portfolio value fell 26% quarter-over-quarter to $517M.
Based on Peconic Partners's 13F filing for Q1 2018, filed 15 May 2018.