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
|
+$19.2M |
| 2 |
Uber
UBER
|
+$15.6M |
| 3 |
WCC
WESCO International
WCC
|
+$12.6M |
| 4 |
Caesars Entertainment
CZR
|
+$8.04M |
| 5 |
PENN Entertainment
PENN
|
+$6.16M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
ETRN
Equitrans Midstream Corporation Common Stock
ETRN
|
+$21.4M |
| 2 |
Warner Bros
WBD
|
+$19.3M |
| 3 |
Bumble
BMBL
|
+$11M |
| 4 |
Global Payments
GPN
|
+$10.8M |
| 5 |
Global X Uranium ETF
URA
|
+$7.93M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 88.65% |
| 2 | Consumer Discretionary | 5.27% |
| 3 | Technology | 3.6% |
| 4 | Real Estate | 1.16% |
| 5 | Energy | 0.67% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$311M
| $488K | 0.03% |
15,000
-235,000
| -94% | -$7.65M |
|
27
NextEra Energy
NEE
$174B
| $435K | 0.03% |
5,200
| – | – |
|
28
Apple
AAPL
$4.51T
| $286K | 0.02% |
2,200
| – | – |
|
29
Idexx Laboratories
IDXX
$43.9B
| $180K | 0.01% |
440
| – | – |
|
|
30
Warner Bros
WBD
$71.6B
| $91.7K | 0.01% |
9,676
-1,710,000
| -99% | -$19.3M |
|
31
Zoetis
ZTS
$32.1B
| $80.6K | 0.01% |
550
| – | – |
|
32
Shopify
SHOP
$192B
| $67K | ﹤0.01% |
1,930
| – | – |
|
|
VMEO
33
DELISTED
Vimeo
VMEO
| $6.13K | ﹤0.01% |
1,786
| – | – |
|
|
34
Bumble
BMBL
$370M
| – | – |
-512,580
| Closed | -$11M |
|
35
Coinbase
COIN
$49.2B
| – | – |
-830
| Closed | -$54K |
|
36
FLEX LNG
FLNG
$1.73B
| – | – |
-60,000
| Closed | -$1.9M |
|
|
37
Global Payments
GPN
$24.7B
| – | – |
-100,000
| Closed | -$10.8M |
|
38
NVIDIA
NVDA
$5.2T
| – | – |
-3,000
| Closed | -$36K |
|
39
PayPal
PYPL
$52.7B
| – | – |
-1,250
| Closed | -$108K |
|
40
iShares 20+ Year Treasury Bond ETF
TLT
$45.5B
| – | – |
-10,000
| Closed | -$1.02M |
|
|
41
Global X Uranium ETF
URA
$6.46B
| – | – |
-400,000
| Closed | -$7.93M |
|
42
Vanguard S&P 500 ETF
VOO
$1.02T
| – | – |
-10,000
| Closed | -$3.28M |
|
|
SWN
43
DELISTED
Southwestern Energy Company
SWN
| – | – |
-100,000
| Closed | -$612K |
|
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William Harnisch's Q4 2022 Portfolio in Review
As of Q4 2022, William Harnisch held 43 positions worth $1.55B, up 7.1% from $1.45B the previous quarter. Its ten largest holdings account for 98% of the portfolio.
William Harnisch's Q4 2022 filing shows 9 new, 4 increased, 6 reduced and 10 closed positions. Its largest new stake was MasTec: 234,300 shares worth $20M. The largest sale was Equitrans Midstream Corporation Common Stock, an estimated $21.4M.
By sector, the portfolio is most concentrated in Industrials at 89% of assets, up from 85% a quarter earlier, followed by Consumer Discretionary and Technology.
- William Harnisch's largest Q4 2022 buy was MasTec: 234,300 shares worth $20M.
- William Harnisch added most to Uber in Q4 2022, an estimated $15.6M increase.
- William Harnisch's biggest Q4 2022 reduction was Equitrans Midstream Corporation Common Stock, cutting an estimated $21.4M.
- William Harnisch fully exited Bumble in Q4 2022, selling an estimated $11M.
- William Harnisch's ten largest holdings make up 98% of its $1.55B portfolio in Q4 2022.
- William Harnisch opened 9 new positions and closed 10 in Q4 2022.
- William Harnisch's portfolio value rose 7.1% quarter-over-quarter to $1.55B.
Based on Peconic Partners's 13F filing for Q4 2022, filed 14 Feb 2023.