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
| 1 |
Apple
AAPL
|
$32.1M |
| 2 |
Bausch Health
BHC
|
$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
$14.9M |
| 5 |
Amazon
AMZN
|
$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$12.1M |
| 4 |
Netflix
NFLX
|
$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Markel Group
MKL
$24.8B
| $977K | 0.08% |
+1,107
| New | +$977K |
|
127
Republic Services
RSG
$73B
| $969K | 0.08% |
22,029
+21,463
| +3,792% | +$944K |
|
|
RLYP
128
DELISTED
RELYPSA INC COM
RLYP
| $958K | 0.08% |
33,826
+28,610
| +549% | +$810K |
|
|
RDS.B
129
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $952K | 0.07% |
20,694
+7,506
| +57% | +$345K |
|
130
Community Health Systems
CYH
$398M
| $942K | 0.07% |
+42,974
| New | +$942K |
|
131
Puma Biotechnology
PBYI
$257M
| $940K | 0.07% |
11,991
+2,181
| +22% | +$171K |
|
132
Crown Castle
CCI
$41.6B
| $935K | 0.07% |
10,820
+7,499
| +226% | +$648K |
|
|
STRZA
133
DELISTED
Starz - Series A
STRZA
| $926K | 0.07% |
+27,657
| New | +$926K |
|
134
Delta Air Lines
DAL
$39.5B
| $925K | 0.07% |
18,264
+3,295
| +22% | +$167K |
|
135
Paychex
PAYX
$49.4B
| $922K | 0.07% |
+17,438
| New | +$922K |
|
136
Skyworks Solutions
SWKS
$11.1B
| $912K | 0.07% |
11,882
-13,554
| -53% | -$1.04M |
|
|
EMC
137
DELISTED
EMC CORPORATION
EMC
| $905K | 0.07% |
+35,251
| New | +$905K |
|
138
BP
BP
$88.4B
| $902K | 0.07% |
34,296
-51,667
| -60% | -$1.36M |
|
139
Bunge Global
BG
$16.2B
| $892K | 0.07% |
13,078
+2,040
| +18% | +$139K |
|
140
Hershey
HSY
$37.6B
| $874K | 0.07% |
+9,794
| New | +$874K |
|
|
FIT
141
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $870K | 0.07% |
29,408
+4,936
| +20% | +$146K |
|
142
Kraft Heinz
KHC
$31.9B
| $868K | 0.07% |
11,939
-9,990
| -46% | -$726K |
|
|
GOLD
143
DELISTED
Randgold Resources Ltd
GOLD
| $866K | 0.07% |
14,091
-114
| -0.8% | -$7.01K |
|
144
ProShares UltraPro Short S&P 500
SPXU
$517M
| $864K | 0.07% |
273
+59
| +28% | +$187K |
|
145
Post Holdings
POST
$5.86B
| $863K | 0.07% |
21,395
+7,472
| +54% | +$301K |
|
|
MDVN
146
DELISTED
MEDIVATION, INC.
MDVN
| $846K | 0.07% |
17,507
-17,824
| -50% | -$861K |
|
147
GSK
GSK
$79.8B
| $844K | 0.07% |
16,740
+11,154
| +200% | +$562K |
|
148
Target
TGT
$42.1B
| $825K | 0.06% |
11,373
+1,593
| +16% | +$116K |
|
149
Lennox International
LII
$19.7B
| $821K | 0.06% |
6,578
+4,178
| +174% | +$521K |
|
150
Enterprise Products Partners
EPD
$68.9B
| $819K | 0.06% |
+32,034
| New | +$819K |
|