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 | |
|---|---|---|---|---|---|---|
3226
PUT
DHT Holdings
DHT
$2.95B
| $14K | ﹤0.01% |
169
+154
| +1,027% | +$853 |
|
3227
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$794M
| $14K | ﹤0.01% |
+606
| New | +$14.1K |
|
3228
PUT
DNOW Inc
DNOW
$2.59B
| $14K | ﹤0.01% |
236
-30
| -11% | -$527 |
|
3229
PUT
Consolidated Edison
ED
$41.1B
| $14K | ﹤0.01% |
173
-283
| -62% | -$21.3K |
|
3230
PUT
Equifax
EFX
$20.8B
| $14K | ﹤0.01% |
343
+299
| +680% | +$36.2K |
|
3231
CALL
Ezcorp Inc
EZPW
$1.87B
| $14K | ﹤0.01% |
+118
| New | +$665 |
|
3232
PUT
Factset
FDS
$9.46B
| $14K | ﹤0.01% |
134
+97
| +262% | +$15K |
|
3233
PUT
Genesis Energy
GEL
$1.81B
| $14K | ﹤0.01% |
232
-83
| -26% | -$2.91K |
|
|
GLDD
3234
DELISTED
Great Lakes Dredge & Dock
GLDD
| $14K | ﹤0.01% |
+3,292
| New | +$14.8K |
|
3235
Groupon
GRPN
$1.05B
| $14K | ﹤0.01% |
228
-1,119
| -83% | -$82.8K |
|
3236
Granite Construction
GVA
$5.49B
| $14K | ﹤0.01% |
+329
| New | +$14.5K |
|
3237
PUT
Inseego
INSG
$114M
| $14K | ﹤0.01% |
5
| – | – |
|
3238
Intrepid Potash
IPI
$461M
| $14K | ﹤0.01% |
1,023
+678
| +197% | +$8.56K |
|
|
IRBT
3239
PUT
DELISTED
iRobot
IRBT
| $14K | ﹤0.01% |
35
+14
| +67% | +$514 |
|
3240
PUT
Invesco
IVZ
$13.3B
| $14K | ﹤0.01% |
120
+92
| +329% | +$2.73K |
|
3241
PUT
Jefferies Financial Group
JEF
$13B
| $14K | ﹤0.01% |
86
+57
| +197% | +$871 |
|
3242
Lincoln Electric
LECO
$14.1B
| $14K | ﹤0.01% |
+251
| New | +$15.1K |
|
3243
CALL
Lennar Class B
LEN.B
$20.1B
| $14K | ﹤0.01% |
204
-65
| -24% | -$2.22K |
|
3244
CALL
Lumentum
LITE
$55.4B
| $14K | ﹤0.01% |
138
+59
| +75% | +$1.46K |
|
3245
CALL
La-Z-Boy
LZB
$1.62B
| $14K | ﹤0.01% |
59
+8
| +16% | +$209 |
|
3246
PUT
Magna International
MGA
$18.3B
| $14K | ﹤0.01% |
161
+120
| +293% | +$4.83K |
|
3247
CALL
MGP Ingredients
MGPI
$384M
| $14K | ﹤0.01% |
20
-218
| -92% | -$6.47K |
|
3248
CALL
M&T Bank
MTB
$36B
| $14K | ﹤0.01% |
99
+10
| +11% | +$1.16K |
|
3249
Nektar Therapeutics
NKTR
$2.41B
| $14K | ﹤0.01% |
69
-27
| -28% | -$6.04K |
|
3250
PUT
Nelnet
NNI
$4.81B
| $14K | ﹤0.01% |
25
+12
| +92% | +$448 |
|
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.