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
|
+$16.8M |
| 2 |
Nutrien
NTR
|
+$15.5M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$15.4M |
| 4 |
WCC
WESCO International
WCC
|
+$14.9M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
EA
Electronic Arts
EA
|
+$14.5M |
| 2 |
SPDR Gold Trust
GLD
|
+$7.53M |
| 3 |
Lowe's Companies
LOW
|
+$5.26M |
| 4 |
Dycom Industries
DY
|
+$4.85M |
| 5 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$3.43M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 70.62% |
| 2 | Real Estate | 4.6% |
| 3 | Communication Services | 4.22% |
| 4 | Financials | 4.09% |
| 5 | Consumer Discretionary | 3.66% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
Dynatrace
DT
$14.2B
| – | – |
-35,000
| Closed | -$1.42M |
|
|
EA
52
DELISTED
Electronic Arts
EA
| – | – |
-110,000
| Closed | -$14.5M |
|
53
Flex
FLEX
$40.8B
| – | – |
-10,616
| Closed | -$82K |
|
54
FNB Corp
FNB
$6.6B
| – | – |
-7,500
| Closed | -$56K |
|
55
Fortinet
FTNT
$113B
| – | – |
-5,000
| Closed | -$137K |
|
|
56
SPDR Gold Trust
GLD
$152B
| – | – |
-45,000
| Closed | -$7.53M |
|
57
General Motors
GM
$77.2B
| – | – |
-234
| Closed | -$6K |
|
|
58
Lowe's Companies
LOW
$121B
| – | – |
-38,963
| Closed | -$5.26M |
|
59
Martin Marietta Materials
MLM
$32.1B
| – | – |
-400
| Closed | -$83K |
|
60
Maximus
MMS
$3.05B
| – | – |
-1,000
| Closed | -$70K |
|
61
Matador Resources
MTDR
$7.22B
| – | – |
-50,000
| Closed | -$425K |
|
62
Micron Technology
MU
$1.09T
| – | – |
-860
| Closed | -$44K |
|
63
Neurocrine Biosciences
NBIX
$15.5B
| – | – |
-900
| Closed | -$110K |
|
64
Netflix
NFLX
$331B
| – | – |
-50,000
| Closed | -$2.27M |
|
65
Twilio
TWLO
$34.6B
| – | – |
-205
| Closed | -$45K |
|
66
US Bancorp
USB
$96.7B
| – | – |
-2,450
| Closed | -$90K |
|
67
Vulcan Materials
VMC
$35.8B
| – | – |
-800
| Closed | -$93K |
|
68
Verizon
VZ
$205B
| – | – |
-3,000
| Closed | -$165K |
|
69
Workday
WDAY
$49.4B
| – | – |
-180
| Closed | -$34K |
|
70
Zoetis
ZTS
$32.1B
| – | – |
-1,000
| Closed | -$137K |
|
|
CVET
71
DELISTED
Covetrus, Inc. Common Stock
CVET
| – | – |
-3,000
| Closed | -$54K |
|
|
CONE
72
DELISTED
CyrusOne Inc Common Stock
CONE
| – | – |
-2,000
| Closed | -$146K |
|
|
ACIA
73
DELISTED
Acacia Communications Inc
ACIA
| – | – |
-2,000
| Closed | -$134K |
|
Similar funds
William Harnisch's Q3 2020 Portfolio in Review
As of Q3 2020, William Harnisch held 73 positions worth $561M, up 56% from $359M the previous quarter. Its ten largest holdings account for 86% of the portfolio.
William Harnisch deployed $108M of net new capital in Q3 2020, opening 12 new positions and adding to 8 existing holdings. Its largest new stake was MasTec: 389,924 shares worth $16.5M.
By sector, the portfolio is most concentrated in Industrials at 71% of assets, down from 76% a quarter earlier, followed by Real Estate and Communication Services.
On the sell side, the largest reduction was Dycom Industries, an estimated $4.85M trimmed.
- William Harnisch's largest Q3 2020 buy was MasTec: 389,924 shares worth $16.5M.
- William Harnisch added most to Alphabet (Google) Class A in Q3 2020, an estimated $15.4M increase.
- William Harnisch's biggest Q3 2020 reduction was Dycom Industries, cutting an estimated $4.85M.
- William Harnisch fully exited Electronic Arts in Q3 2020, selling an estimated $14.5M.
- William Harnisch's ten largest holdings make up 86% of its $561M portfolio in Q3 2020.
- William Harnisch opened 12 new positions and closed 29 in Q3 2020.
- William Harnisch's portfolio value rose 56% quarter-over-quarter to $561M.
Based on Peconic Partners's 13F filing for Q3 2020, filed 16 Nov 2020.