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 |
Alibaba
BABA
|
$48.9M |
| 2 |
Boeing
BA
|
$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
FedEx
FDX
|
$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
$17.5M |
| 4 |
Netflix
NFLX
|
$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Canadian Solar
CSIQ
$650M
| $1.28M | ﹤0.01% |
68,029
+21,517
| +46% | +$406K |
|
177
Fastenal
FAST
$57.7B
| $1.28M | ﹤0.01% |
+78,550
| New | +$1.28M |
|
178
Freeport-McMoran
FCX
$66.1B
| $1.27M | ﹤0.01% |
132,774
+79,688
| +150% | +$762K |
|
179
Foot Locker
FL
$2.3B
| $1.25M | ﹤0.01% |
28,957
+2,595
| +10% | +$112K |
|
180
Teva Pharmaceuticals
TEVA
$21.2B
| $1.24M | ﹤0.01% |
180,136
+39,344
| +28% | +$271K |
|
181
Illumina
ILMN
$15.5B
| $1.24M | ﹤0.01% |
4,176
+3,198
| +327% | +$946K |
|
182
Liberty Global Class A
LBTYA
$4.06B
| $1.23M | ﹤0.01% |
49,762
+8,343
| +20% | +$206K |
|
183
Bread Financial
BFH
$3.12B
| $1.23M | ﹤0.01% |
12,005
+5,756
| +92% | +$588K |
|
184
Neurocrine Biosciences
NBIX
$13.9B
| $1.22M | ﹤0.01% |
13,502
+5,176
| +62% | +$466K |
|
185
SPDR Portfolio S&P 1500 Composite Stock Market ETF
SPTM
$11.1B
| $1.22M | ﹤0.01% |
33,091
+31,829
| +2,522% | +$1.17M |
|
186
Kohl's
KSS
$1.84B
| $1.21M | ﹤0.01% |
24,423
-10,164
| -29% | -$504K |
|
187
Lear
LEA
$5.87B
| $1.21M | ﹤0.01% |
10,226
-3,608
| -26% | -$425K |
|
|
MNDT
188
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.21M | ﹤0.01% |
90,335
+42,702
| +90% | +$570K |
|
189
Dollar General
DG
$23.9B
| $1.2M | ﹤0.01% |
7,575
-14,700
| -66% | -$2.33M |
|
|
UN
190
DELISTED
Unilever NV New York Registry Shares
UN
| $1.2M | ﹤0.01% |
20,056
-5,298
| -21% | -$318K |
|
191
Bath & Body Works
BBWI
$6.57B
| $1.18M | ﹤0.01% |
74,346
-27,428
| -27% | -$434K |
|
|
HTZ
192
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $1.17M | ﹤0.01% |
+84,812
| New | +$1.17M |
|
193
Ecolab
ECL
$78B
| $1.17M | ﹤0.01% |
+5,923
| New | +$1.17M |
|
194
Estee Lauder
EL
$31.5B
| $1.17M | ﹤0.01% |
+5,884
| New | +$1.17M |
|
195
Zimmer Biomet
ZBH
$20.8B
| $1.17M | ﹤0.01% |
+8,780
| New | +$1.17M |
|
|
JOYY
196
JOYY Inc. American Depositary Shares
JOYY
$3.19B
| $1.17M | ﹤0.01% |
20,762
+14,130
| +213% | +$794K |
|
197
BorgWarner
BWA
$9.49B
| $1.15M | ﹤0.01% |
35,461
+22,317
| +170% | +$721K |
|
198
Ambarella
AMBA
$3.47B
| $1.13M | ﹤0.01% |
18,061
+2,573
| +17% | +$162K |
|
199
WisdomTree India Earnings Fund ETF
EPI
$2.9B
| $1.13M | ﹤0.01% |
47,302
-16,827
| -26% | -$401K |
|
|
AABA
200
DELISTED
Altaba Inc. Common Stock
AABA
| $1.13M | ﹤0.01% |
57,919
+929
| +2% | +$18.1K |
|