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 |
Tesla
TSLA
|
$27.1M |
| 2 |
Netflix
NFLX
|
$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
$18.3M |
| 5 |
Alibaba
BABA
|
$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
$71.9M |
| 2 |
Micron Technology
MU
|
$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$26.3M |
| 4 |
Boeing
BA
|
$21M |
| 5 |
Citigroup
C
|
$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
201
Editas Medicine
EDIT
$251M
| $1.03M | 0.05% |
31,060
+19,175
| +161% | +$635K |
|
202
SPDR S&P Regional Banking ETF
KRE
$3.99B
| $1.02M | 0.05% |
16,950
-2,041
| -11% | -$123K |
|
203
Paycom
PAYC
$12.6B
| $1.02M | 0.04% |
9,516
+4,072
| +75% | +$437K |
|
|
AIMT
204
DELISTED
Aimmune Therapeutics, Inc.
AIMT
| $1.02M | 0.04% |
32,108
+31,288
| +3,816% | +$995K |
|
|
OA
205
DELISTED
Orbital ATK, Inc.
OA
| $1.02M | 0.04% |
7,692
-12,840
| -63% | -$1.7M |
|
206
FerroAtlántica
GSM
$801M
| $1.01M | 0.04% |
94,060
+91,757
| +3,984% | +$984K |
|
207
Vanguard FTSE Emerging Markets ETF
VWO
$98.1B
| $1.01M | 0.04% |
21,494
-940
| -4% | -$44.1K |
|
208
Chipotle Mexican Grill
CMG
$53.2B
| $990K | 0.04% |
+153,300
| New | +$990K |
|
|
JKS
209
JinkoSolar
JKS
$1.29B
| $986K | 0.04% |
54,041
+47,662
| +747% | +$870K |
|
210
PACCAR
PCAR
$51.6B
| $983K | 0.04% |
+22,302
| New | +$983K |
|
211
Jacobs Solutions
J
$17.3B
| $981K | 0.04% |
20,052
+8,457
| +73% | +$414K |
|
|
LOMA
212
Loma Negra
LOMA
$932M
| $979K | 0.04% |
+45,929
| New | +$979K |
|
213
iShares China Large-Cap ETF
FXI
$6.74B
| $964K | 0.04% |
+20,407
| New | +$964K |
|
214
Sangamo Therapeutics
SGMO
$158M
| $957K | 0.04% |
+50,400
| New | +$957K |
|
|
GLIBA
215
DELISTED
GCI Liberty, Inc. Class A Common Stock (DE)
GLIBA
| $956K | 0.04% |
+18,104
| New | +$956K |
|
216
EOG Resources
EOG
$64.2B
| $952K | 0.04% |
9,046
-870
| -9% | -$91.6K |
|
217
Cintas
CTAS
$81.7B
| $951K | 0.04% |
22,316
+7,716
| +53% | +$329K |
|
218
Freeport-McMoran
FCX
$67B
| $951K | 0.04% |
54,176
-118,574
| -69% | -$2.08M |
|
|
QCP
219
DELISTED
Quality Care Properties, Inc.
QCP
| $949K | 0.04% |
48,858
+48,699
| +30,628% | +$946K |
|
|
JO
220
DELISTED
iPath Bloomberg Coffee Subindex Total Return ETN due June 24, 2038
JO
| $948K | 0.04% |
66,152
+57,880
| +700% | +$829K |
|
|
APC
221
DELISTED
Anadarko Petroleum
APC
| $944K | 0.04% |
15,639
-3,531
| -18% | -$213K |
|
222
Patterson-UTI
PTEN
$2.16B
| $937K | 0.04% |
+53,555
| New | +$937K |
|
|
ARNA
223
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $935K | 0.04% |
23,682
+8,365
| +55% | +$330K |
|
224
KKR & Co
KKR
$124B
| $924K | 0.04% |
+45,544
| New | +$924K |
|
|
HOME
225
DELISTED
At Home Group Inc.
HOME
| $921K | 0.04% |
28,763
+28,725
| +75,592% | +$920K |
|