Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
MNDT
176
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.61M | 0.11% |
97,642
+65,378
| +203% | +$1.06M |
|
|
X
177
CALL
DELISTED
US Steel
X
| $1.61M | 0.11% |
5,267
+1,427
| +37% | +$24K |
|
178
PUT
Wynn Resorts
WYNN
$9.83B
| $1.6M | 0.11% |
2,747
+86
| +3% | +$8.18K |
|
|
WFM
179
DELISTED
Whole Foods Market Inc
WFM
| $1.6M | 0.11% |
50,065
+47,798
| +2,108% | +$1.49M |
|
180
CALL
Nike
NKE
$62.1B
| $1.6M | 0.11% |
4,988
+1,166
| +31% | +$66.4K |
|
|
181
CALL
Citigroup
C
$222B
| $1.57M | 0.1% |
15,515
+7,431
| +92% | +$329K |
|
|
SWN
182
DELISTED
Southwestern Energy Company
SWN
| $1.56M | 0.1% |
+123,746
| New | +$1.5M |
|
183
Seagate
STX
$206B
| $1.55M | 0.1% |
+63,656
| New | +$1.54M |
|
184
The Mosaic Company
MOS
$7.24B
| $1.54M | 0.1% |
+58,901
| New | +$1.56M |
|
|
WR
185
DELISTED
Westar Energy Inc
WR
| $1.53M | 0.1% |
+27,339
| New | +$1.45M |
|
186
NextEra Energy
NEE
$186B
| $1.53M | 0.1% |
46,864
+11,868
| +34% | +$356K |
|
187
CF Industries
CF
$19.4B
| $1.53M | 0.1% |
63,333
+53,926
| +573% | +$1.6M |
|
|
LXK
188
DELISTED
Lexmark Intl Inc
LXK
| $1.52M | 0.1% |
+40,224
| New | +$1.49M |
|
189
PUT
GoPro
GPRO
$124M
| $1.51M | 0.1% |
1,360
-3,914
| -74% | -$43.4K |
|
190
State Street SPDR S&P Retail ETF
XRT
$373M
| $1.5M | 0.1% |
35,843
+8,196
| +30% | +$352K |
|
191
CALL
Capri Holdings
CPRI
$1.83B
| $1.49M | 0.1% |
918
+80
| +10% | +$3.93K |
|
192
CALL
Microsoft
MSFT
$2.9T
| $1.49M | 0.1% |
7,609
-165
| -2% | -$8.57K |
|
|
LNKD
193
PUT
DELISTED
LinkedIn Corporation
LNKD
| $1.47M | 0.1% |
6,792
+4,990
| +277% | +$691K |
|
|
HES
194
CALL
DELISTED
Hess
HES
| $1.46M | 0.1% |
4,400
+1,203
| +38% | +$69.7K |
|
195
CALL
JPMorgan Chase
JPM
$919B
| $1.45M | 0.1% |
8,460
+2,789
| +49% | +$174K |
|
|
QLIK
196
DELISTED
QLIK TECHNOLOGIES INC COM STK (DE)
QLIK
| $1.43M | 0.1% |
48,459
+47,630
| +5,745% | +$1.42M |
|
|
MRO
197
DELISTED
Marathon Oil Corporation
MRO
| $1.43M | 0.1% |
+95,455
| New | +$1.26M |
|
198
Carnival Corporation Ltd
CCL
$35.8B
| $1.43M | 0.1% |
+32,369
| New | +$1.59M |
|
199
CALL
Procter & Gamble
PG
$349B
| $1.43M | 0.1% |
3,706
+716
| +24% | +$58.8K |
|
200
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$77.3M
| $1.41M | 0.09% |
1,475
+1,234
| +512% | +$173K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.