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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
DOC
826
DELISTED
PHYSICIANS REALTY TRUST
DOC
| $439K | ﹤0.01% |
23,322
+19,571
| +522% | +$368K |
|
827
Valvoline
VVV
$5.15B
| $438K | ﹤0.01% |
+11,772
| New | +$438K |
|
828
Community Health Systems
CYH
$420M
| $437K | ﹤0.01% |
32,876
+30,718
| +1,423% | +$408K |
|
829
Genius Sports
GENI
$3.01B
| $435K | ﹤0.01% |
57,277
-14,663
| -20% | -$111K |
|
830
ProShares UltraShort Bloomberg Natural Gas
KOLD
$193M
| $435K | ﹤0.01% |
+3,598
| New | +$435K |
|
831
Dole
DOLE
$1.33B
| $434K | ﹤0.01% |
+32,594
| New | +$434K |
|
832
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$585M
| $433K | ﹤0.01% |
15,114
+5,327
| +54% | +$153K |
|
|
LSXMK
833
DELISTED
Liberty Media Corporation Series C Liberty SiriusXM Common Stock
LSXMK
| $433K | ﹤0.01% |
11,016
+2,708
| +33% | +$106K |
|
834
CONMED
CNMD
$1.67B
| $432K | ﹤0.01% |
3,054
+2,135
| +232% | +$302K |
|
835
Church & Dwight Co
CHD
$23B
| $431K | ﹤0.01% |
4,209
-21,678
| -84% | -$2.22M |
|
836
Ameren
AEE
$27.1B
| $428K | ﹤0.01% |
+4,819
| New | +$428K |
|
|
BLUE
837
DELISTED
bluebird bio
BLUE
| $428K | ﹤0.01% |
2,145
-836
| -28% | -$167K |
|
838
DigitalBridge
DBRG
$2.24B
| $426K | ﹤0.01% |
+12,800
| New | +$426K |
|
839
Credicorp
BAP
$21.2B
| $424K | ﹤0.01% |
3,474
-3,095
| -47% | -$378K |
|
840
HCA Healthcare
HCA
$94.3B
| $421K | ﹤0.01% |
+1,642
| New | +$421K |
|
841
Designer Brands
DBI
$224M
| $418K | ﹤0.01% |
29,433
+21,403
| +267% | +$304K |
|
842
Denali Therapeutics
DNLI
$2.17B
| $418K | ﹤0.01% |
+9,376
| New | +$418K |
|
843
Nautilus Biotechnolgy
NAUT
$89.2M
| $418K | ﹤0.01% |
80,731
+78,291
| +3,209% | +$405K |
|
844
Tower Semiconductor
TSEM
$7.38B
| $418K | ﹤0.01% |
10,545
-63,104
| -86% | -$2.5M |
|
|
RAD
845
DELISTED
Rite Aid Corporation
RAD
| $418K | ﹤0.01% |
28,472
-22,684
| -44% | -$333K |
|
846
Clear Secure
YOU
$3.58B
| $416K | ﹤0.01% |
+13,289
| New | +$416K |
|
847
ProShares Ultra Silver
AGQ
$871M
| $413K | ﹤0.01% |
11,897
-2,286
| -16% | -$79.4K |
|
848
W.W. Grainger
GWW
$48.5B
| $412K | ﹤0.01% |
796
+205
| +35% | +$106K |
|
849
Madrigal Pharmaceuticals
MDGL
$9.79B
| $410K | ﹤0.01% |
4,850
-11,364
| -70% | -$961K |
|
|
LICY
850
DELISTED
Li-Cycle Holdings Corp.
LICY
| $409K | ﹤0.01% |
+5,143
| New | +$409K |
|