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 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MJN
176
DELISTED
Mead Johnson Nutrition Company
MJN
| $658K | 0.05% |
9,355
+1,001
| +12% | +$70.4K |
|
177
Charter Communications
CHTR
$35.7B
| $653K | 0.05% |
+3,716
| New | +$653K |
|
178
Magna International
MGA
$12.9B
| $653K | 0.05% |
13,611
+10,086
| +286% | +$484K |
|
|
DCP
179
DELISTED
DCP Midstream, LP
DCP
| $653K | 0.05% |
27,012
+23,686
| +712% | +$573K |
|
180
Cheniere Energy
LNG
$51.8B
| $650K | 0.05% |
+13,473
| New | +$650K |
|
181
Jazz Pharmaceuticals
JAZZ
$7.86B
| $649K | 0.05% |
4,894
+4,594
| +1,531% | +$609K |
|
|
P
182
DELISTED
Pandora Media Inc
P
| $648K | 0.05% |
30,406
-730
| -2% | -$15.6K |
|
183
Franklin Resources
BEN
$13B
| $646K | 0.05% |
17,346
+15,141
| +687% | +$564K |
|
184
Core Laboratories
CLB
$592M
| $646K | 0.05% |
6,476
+4,300
| +198% | +$429K |
|
185
iShares TIPS Bond ETF
TIP
$13.6B
| $643K | 0.05% |
5,817
-2,427
| -29% | -$268K |
|
186
National Fuel Gas
NFG
$7.82B
| $639K | 0.05% |
12,790
+12,609
| +6,966% | +$630K |
|
|
VIMC
187
DELISTED
VIMICRO INTERNATIONAL CORP ADR (KY)
VIMC
| $633K | 0.05% |
50,868
+43,728
| +612% | +$544K |
|
188
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.79B
| $632K | 0.05% |
23,154
-4,986
| -18% | -$136K |
|
|
RDS.B
189
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $626K | 0.05% |
13,188
-15,191
| -54% | -$721K |
|
190
iShares Core S&P Small-Cap ETF
IJR
$86B
| $624K | 0.05% |
+11,728
| New | +$624K |
|
|
RAI
191
DELISTED
Reynolds American Inc
RAI
| $624K | 0.05% |
14,096
+10,334
| +275% | +$457K |
|
192
Bank of America
BAC
$369B
| $623K | 0.05% |
40,020
+5,507
| +16% | +$85.7K |
|
|
TTPH
193
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
| $620K | 0.05% |
4,162
+3,724
| +850% | +$555K |
|
194
Harley-Davidson
HOG
$3.67B
| $619K | 0.05% |
11,290
+8,186
| +264% | +$449K |
|
|
PBFX
195
DELISTED
PBF LOGISTICS LP
PBFX
| $618K | 0.05% |
35,893
+35,130
| +4,604% | +$605K |
|
|
OMG
196
DELISTED
OM GROUP INC.
OMG
| $611K | 0.04% |
18,590
+18,224
| +4,979% | +$599K |
|
|
NUVA
197
DELISTED
NuVasive, Inc.
NUVA
| $600K | 0.04% |
12,443
+11,612
| +1,397% | +$560K |
|
198
Skechers
SKX
$9.5B
| $599K | 0.04% |
+13,419
| New | +$599K |
|
|
BLUE
199
DELISTED
bluebird bio
BLUE
| $580K | 0.04% |
524
-170
| -24% | -$188K |
|
|
SINA
200
DELISTED
Sina Corp
SINA
| $573K | 0.04% |
14,301
+11,408
| +394% | +$457K |
|