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 | |
|---|---|---|---|---|---|---|
|
CIE
976
PUT
DELISTED
Cobalt International Energy, Inc
CIE
| $205K | 0.01% |
53
+14
| +36% | +$539 |
|
977
Coty
COTY
$2.29B
| $204K | 0.01% |
7,875
+7,445
| +1,731% | +$204K |
|
978
Digital Realty Trust
DLR
$66.4B
| $204K | 0.01% |
1,879
+1,718
| +1,067% | +$163K |
|
|
EXAS
979
CALL
DELISTED
Exact Sciences
EXAS
| $203K | 0.01% |
1,065
+757
| +246% | +$5.7K |
|
980
CALL
Martin Marietta Materials
MLM
$32.8B
| $203K | 0.01% |
212
-41
| -16% | -$7.33K |
|
981
Urban Outfitters
URBN
$5.96B
| $203K | 0.01% |
7,407
+3,534
| +91% | +$102K |
|
|
IMMU
982
DELISTED
Immunomedics Inc
IMMU
| $203K | 0.01% |
+87,650
| New | +$293K |
|
|
TECD
983
DELISTED
Tech Data Corp
TECD
| $203K | 0.01% |
2,832
+2,309
| +441% | +$168K |
|
|
JUNO
984
PUT
DELISTED
Juno Therapeutics, Inc.
JUNO
| $203K | 0.01% |
440
+298
| +210% | +$12.4K |
|
985
PUT
Cal-Maine
CALM
$4.18B
| $202K | 0.01% |
265
-293
| -53% | -$13.8K |
|
|
EXAS
986
PUT
DELISTED
Exact Sciences
EXAS
| $202K | 0.01% |
1,437
+1,022
| +246% | +$7.7K |
|
987
CALL
The Greenbrier Companies
GBX
$1.59B
| $202K | 0.01% |
947
+236
| +33% | +$6.79K |
|
988
CALL
Waste Management
WM
$95.3B
| $202K | 0.01% |
213
-91
| -30% | -$5.5K |
|
|
CPPL
989
DELISTED
Columbia Pipeline Partners LP
CPPL
| $202K | 0.01% |
13,533
-2,350
| -15% | -$33.8K |
|
|
MESG
990
DELISTED
XURA INC COM (DE)
MESG
| $202K | 0.01% |
8,283
+837
| +11% | +$18.9K |
|
991
CALL
General Motors
GM
$73B
| $201K | 0.01% |
2,966
+513
| +21% | +$15.6K |
|
992
PUT
Pan American Silver
PAAS
$18.6B
| $201K | 0.01% |
740
+274
| +59% | +$3.92K |
|
993
PUT
Carnival Corporation Ltd
CCL
$34.6B
| $199K | 0.01% |
679
+443
| +188% | +$21.7K |
|
994
PUT
Hewlett Packard
HPE
$63.1B
| $199K | 0.01% |
3,097
+2,195
| +243% | +$22.3K |
|
995
PUT
Pacira BioSciences
PCRX
$1.02B
| $199K | 0.01% |
150
+94
| +168% | +$4.62K |
|
996
PUT
PayPal
PYPL
$49.4B
| $199K | 0.01% |
1,456
-199
| -12% | -$7.61K |
|
|
ARMH
997
CALL
DELISTED
ARM HOLDINGS PLC ADS
ARMH
| $199K | 0.01% |
613
+428
| +231% | +$18.1K |
|
998
CALL
Domino's
DPZ
$10.7B
| $198K | 0.01% |
336
-160
| -32% | -$20.3K |
|
999
Fluor
FLR
$7.44B
| $198K | 0.01% |
+4,038
| New | +$210K |
|
1000
ProShares UltraShort Bloomberg Crude Oil
SCO
$581M
| $198K | 0.01% |
61
+22
| +56% | +$83K |
|
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.