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
|
+$9.19M |
| 2 |
XEC
CIMAREX ENERGY CO
XEC
|
+$834K |
| 3 |
Matador Resources
MTDR
|
+$488K |
| 4 |
RH
RH
|
+$297K |
| 5 |
Enterprise Products Partners
EPD
|
+$260K |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
General Motors
GM
|
+$54.8M |
| 2 |
MBLY
Mobileye N.V.
MBLY
|
+$36.8M |
| 3 |
Crown Castle
CCI
|
+$32.7M |
| 4 |
Cemex
CX
|
+$20.9M |
| 5 |
D.R. Horton
DHI
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 71.36% |
| 2 | Consumer Discretionary | 17.12% |
| 3 | Technology | 5.69% |
| 4 | Real Estate | 2.82% |
| 5 | Energy | 2.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ARMH
26
DELISTED
ARM HOLDINGS PLC ADS
ARMH
| $283K | 0.09% |
6,000
| – | – |
|
27
PUT
SBA Communications
SBAC
$19.4B
| $240K | 0.08% |
+1,000
| New | +$108K |
|
|
VIVS
28
VivoSim Labs
VIVS
$3.83M
| $210K | 0.07% |
100
| – | – |
|
29
3D Systems Corp
DDD
$530M
| $207K | 0.07% |
+4,500
| New | +$46.4K |
|
|
HW
30
DELISTED
Headwaters Inc
HW
| $140K | 0.05% |
10,000
| – | – |
|
31
Inseego
INSG
$72.1M
| $29K | 0.01% |
1,000
| – | – |
|
|
OCLR
32
DELISTED
Oclaro Inc.
OCLR
| $24K | 0.01% |
10,000
| – | – |
|
33
Ciena
CIEN
$56B
| – | – |
-531,300
| Closed | -$11M |
|
|
34
Cemex
CX
$16B
| – | – |
-3,240,582
| Closed | -$20.9M |
|
|
35
D.R. Horton
DHI
$41.5B
| – | – |
-669,010
| Closed | -$19.6M |
|
36
Lennar Class A
LEN
$21B
| – | – |
-237,952
| Closed | -$10.9M |
|
37
Toll Brothers
TOL
$13.7B
| – | – |
-150,000
| Closed | -$5.14M |
|
38
State Street Utilities Select Sector SPDR ETF
XLU
$22.2B
| – | – |
-124,600
| Closed | -$2.7M |
|
|
NEPT
39
DELISTED
Neptune Wellness Solutions Inc. Ordinary Shares
NEPT
| – | – |
-74
| Closed | -$115K |
|
|
MBLY
40
DELISTED
Mobileye N.V.
MBLY
| – | – |
-808,430
| Closed | -$36.8M |
|
Similar funds
William Harnisch's Q4 2015 Portfolio in Review
As of Q4 2015, William Harnisch held 40 positions worth $302M, down 51% from $612M the previous quarter. Its ten largest holdings account for 95% of the portfolio.
William Harnisch withdrew a net $217M in Q4 2015, closing 8 positions and reducing 13 holdings. Its most notable exit was Mobileye N.V., an estimated $36.8M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 71% of assets, up from 48% a quarter earlier, followed by Consumer Discretionary and Technology.
Against the trend, William Harnisch opened a new position in CIMAREX ENERGY CO worth $658K.
- William Harnisch's largest Q4 2015 buy was CIMAREX ENERGY CO: 7,500 shares worth $658K.
- William Harnisch added most to MasTec in Q4 2015, an estimated $9.19M increase.
- William Harnisch's biggest Q4 2015 reduction was General Motors, cutting an estimated $54.8M.
- William Harnisch fully exited Mobileye N.V. in Q4 2015, selling an estimated $36.8M.
- William Harnisch's ten largest holdings make up 95% of its $302M portfolio in Q4 2015.
- William Harnisch opened 4 new positions and closed 8 in Q4 2015.
- William Harnisch's portfolio value fell 51% quarter-over-quarter to $302M.
Based on Peconic Partners's 13F filing for Q4 2015, filed 16 Feb 2016.