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 | |
|---|---|---|---|---|---|---|
|
FDML
3151
DELISTED
Federal-Mogul Holdings Corporation
FDML
| $16K | ﹤0.01% |
+2,038
| New | +$17.8K |
|
3152
PUT
Albemarle
ALB
$13.7B
| $15K | ﹤0.01% |
+61
| New | +$4.48K |
|
3153
AXIS Capital
AXS
$8.63B
| $15K | ﹤0.01% |
+282
| New | +$15.3K |
|
3154
PUT
City Holding Co
CHCO
$2.03B
| $15K | ﹤0.01% |
64
| – | – |
|
3155
CALL
Commercial Metals
CMC
$7.53B
| $15K | ﹤0.01% |
302
+151
| +100% | +$2.6K |
|
3156
CALL
Deckers Outdoor
DECK
$13.6B
| $15K | ﹤0.01% |
294
-72
| -20% | -$665 |
|
3157
ProShares Trust UltraShort MSCI Emerging Markets
EEV
$2.46M
| $15K | ﹤0.01% |
85
-492
| -85% | -$99.7K |
|
3158
PUT
Equinix
EQIX
$103B
| $15K | ﹤0.01% |
66
-53
| -45% | -$18.5K |
|
3159
CALL
FMC
FMC
$1.39B
| $15K | ﹤0.01% |
134
+109
| +436% | +$4.27K |
|
|
GES
3160
PUT
DELISTED
Guess Inc
GES
| $15K | ﹤0.01% |
78
+55
| +239% | +$910 |
|
3161
PUT
HP
HPQ
$24.3B
| $15K | ﹤0.01% |
159
-108
| -40% | -$1.34K |
|
3162
PUT
ING
ING
$95.7B
| $15K | ﹤0.01% |
162
+135
| +500% | +$1.6K |
|
3163
iShares S&P 500 Growth ETF
IVW
$72.2B
| $15K | ﹤0.01% |
544
-2,568
| -83% | -$74.5K |
|
|
JKS
3164
PUT
JinkoSolar
JKS
$799M
| $15K | ﹤0.01% |
90
-21
| -19% | -$444 |
|
3165
CALL
Leggett & Platt
LEG
$1.5B
| $15K | ﹤0.01% |
122
+108
| +771% | +$5.32K |
|
3166
Liberty Latin America Class A
LILA
$1.57B
| $15K | ﹤0.01% |
+743
| New | +$17.5K |
|
3167
CALL
MarketAxess Holdings
MKTX
$4.19B
| $15K | ﹤0.01% |
+10
| New | +$1.33K |
|
|
3168
PUT
MarketAxess Holdings
MKTX
$4.19B
| $15K | ﹤0.01% |
76
+6
| +9% | +$798 |
|
3169
PUT
MGIC Investment
MTG
$6.34B
| $15K | ﹤0.01% |
57
+37
| +185% | +$252 |
|
3170
McEwen Inc
MUX
$1.04B
| $15K | ﹤0.01% |
+400
| New | +$10.6K |
|
3171
PUT
NGL Energy Partners
NGL
$1.87B
| $15K | ﹤0.01% |
293
+60
| +26% | +$835 |
|
3172
PUT
Nexstar Media Group
NXST
$5.67B
| $15K | ﹤0.01% |
190
+116
| +157% | +$5.8K |
|
3173
OneSpan
OSPN
$562M
| $15K | ﹤0.01% |
916
-955
| -51% | -$15.9K |
|
3174
CALL
Open Text
OTEX
$5.73B
| $15K | ﹤0.01% |
76
-60
| -44% | -$1.7K |
|
3175
Oxford Square Capital
OXSQ
$148M
| $15K | ﹤0.01% |
2,947
-3,741
| -56% | -$19.6K |
|
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.