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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2951
PUT
Aon
AON
$77.3B
| $20K | ﹤0.01% |
325
+298
| +1,104% | +$32.9K |
|
2952
PUT
ATI
ATI
$27B
| $20K | ﹤0.01% |
130
-192
| -60% | -$3.18K |
|
|
AXON
2953
PUT
Axon Enterprise
AXON
$40.5B
| $20K | ﹤0.01% |
183
+99
| +118% | +$2.75K |
|
2954
Axalta
AXTA
$7.01B
| $20K | ﹤0.01% |
740
-11,463
| -94% | -$321K |
|
2955
PUT
Crown Castle
CCI
$32.7B
| $20K | ﹤0.01% |
233
+105
| +82% | +$10.1K |
|
2956
CALL
Celanese
CE
$5.09B
| $20K | ﹤0.01% |
146
-46
| -24% | -$3.01K |
|
2957
CALL
Chegg
CHGG
$108M
| $20K | ﹤0.01% |
98
-10
| -9% | -$64 |
|
2958
CALL
Citizens
CIA
$245M
| $20K | ﹤0.01% |
333
+302
| +974% | +$2.8K |
|
|
CTRA
2959
PUT
DELISTED
Coterra Energy
CTRA
| $20K | ﹤0.01% |
1,286
-261
| -17% | -$6.53K |
|
2960
PUT
Emergent Biosolutions
EBS
$375M
| $20K | ﹤0.01% |
56
+4
| +8% | +$116 |
|
2961
CALL
Ecolab
ECL
$75.6B
| $20K | ﹤0.01% |
85
+39
| +85% | +$4.71K |
|
2962
CALL
Encompass Health
EHC
$11.2B
| $20K | ﹤0.01% |
626
-476
| -43% | -$15.4K |
|
2963
Fluor
FLR
$7.29B
| $20K | ﹤0.01% |
396
-3,642
| -90% | -$188K |
|
|
GES
2964
CALL
DELISTED
Guess Inc
GES
| $20K | ﹤0.01% |
263
+34
| +15% | +$515 |
|
2965
PUT
Genworth Financial
GNW
$3.8B
| $20K | ﹤0.01% |
425
+171
| +67% | +$657 |
|
2966
CALL
Group 1 Automotive
GPI
$3.94B
| $20K | ﹤0.01% |
97
+68
| +234% | +$4.01K |
|
2967
PUT
Huntington Ingalls Industries
HII
$11.3B
| $20K | ﹤0.01% |
97
+81
| +506% | +$13.4K |
|
2968
PUT
Hilton Worldwide
HLT
$74B
| $20K | ﹤0.01% |
163
-15
| -8% | -$1.06K |
|
2969
CALL
Hormel Foods
HRL
$13.9B
| $20K | ﹤0.01% |
274
+157
| +134% | +$5.83K |
|
2970
CALL
Lithia Motors
LAD
$7.78B
| $20K | ﹤0.01% |
+71
| New | +$5.97K |
|
2971
CALL
LKQ Corp
LKQ
$6.58B
| $20K | ﹤0.01% |
159
+101
| +174% | +$3.5K |
|
2972
Martin Midstream Partners
MMLP
$95.9M
| $20K | ﹤0.01% |
+1,038
| New | +$22.3K |
|
2973
CALL
Monro
MNRO
$525M
| $20K | ﹤0.01% |
+35
| New | +$2.12K |
|
2974
PUT
OFG Bancorp
OFG
$2.21B
| $20K | ﹤0.01% |
481
+391
| +434% | +$4K |
|
2975
CALL
O-I Glass
OI
$1.39B
| $20K | ﹤0.01% |
435
+363
| +504% | +$6.58K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.