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 | |
|---|---|---|---|---|---|---|
|
CNSL
2101
DELISTED
Consolidated Communications Holdings, Inc.
CNSL
| $26K | ﹤0.01% |
3,601
-6,306
| -64% | -$45.5K |
|
|
ALBO
2102
DELISTED
Albireo Pharma, Inc. Common Stock
ALBO
| $26K | ﹤0.01% |
1,125
+290
| +35% | +$6.7K |
|
|
ZY
2103
DELISTED
Zymergen Inc. Common Stock
ZY
| $26K | ﹤0.01% |
3,987
-4,947
| -55% | -$32.3K |
|
|
TREC
2104
DELISTED
Trecora Resources
TREC
| $26K | ﹤0.01% |
3,341
+2,385
| +249% | +$18.6K |
|
2105
Adaptive Biotechnologies
ADPT
$1.97B
| $25K | ﹤0.01% |
903
+210
| +30% | +$5.81K |
|
2106
Ceragon Networks
CRNT
$214M
| $25K | ﹤0.01% |
9,827
-72,204
| -88% | -$184K |
|
2107
Luminar Technologies
LAZR
$160M
| $25K | ﹤0.01% |
99
+7
| +8% | +$1.77K |
|
|
NAAS
2108
NaaS Technology Inc
NAAS
$8.71M
| $25K | ﹤0.01% |
+6
| New | +$25K |
|
|
ORLA
2109
Orla Mining
ORLA
$3.76B
| $25K | ﹤0.01% |
6,576
+5,109
| +348% | +$19.4K |
|
2110
Pluri
PLUR
$37.4M
| $25K | ﹤0.01% |
2,147
-1,552
| -42% | -$18.1K |
|
2111
Protolabs
PRLB
$1.19B
| $25K | ﹤0.01% |
494
-11,201
| -96% | -$567K |
|
2112
Invesco S&P 500 Equal Weight Real Estate ETF
RSPR
$109M
| $25K | ﹤0.01% |
+607
| New | +$25K |
|
2113
Solid Biosciences
SLDB
$433M
| $25K | ﹤0.01% |
966
-609
| -39% | -$15.8K |
|
2114
Smart Sand
SND
$77.9M
| $25K | ﹤0.01% |
14,164
+11,249
| +386% | +$19.9K |
|
|
CASA
2115
DELISTED
Casa Systems, Inc. Common Stock
CASA
| $25K | ﹤0.01% |
4,479
-2,971
| -40% | -$16.6K |
|
|
EMAN
2116
DELISTED
eMagin Corporation
EMAN
| $25K | ﹤0.01% |
20,050
-29,138
| -59% | -$36.3K |
|
|
RUBY
2117
DELISTED
Rubius Therapeutics, Inc
RUBY
| $25K | ﹤0.01% |
2,627
+317
| +14% | +$3.02K |
|
|
BRAG
2118
Bragg Gaming Group
BRAG
$74.3M
| $24K | ﹤0.01% |
+4,897
| New | +$24K |
|
2119
Catalyst Pharmaceutical
CPRX
$2.47B
| $24K | ﹤0.01% |
3,691
-73,709
| -95% | -$479K |
|
2120
Fate Therapeutics
FATE
$113M
| $24K | ﹤0.01% |
+426
| New | +$24K |
|
2121
GoHealth
GOCO
$77.7M
| $24K | ﹤0.01% |
427
-115
| -21% | -$6.46K |
|
2122
Matthews International
MATW
$797M
| $24K | ﹤0.01% |
675
+660
| +4,400% | +$23.5K |
|
2123
Milestone Scientific
MLSS
$44.5M
| $24K | ﹤0.01% |
12,015
+8,491
| +241% | +$17K |
|
2124
ODP
ODP
$665M
| $24K | ﹤0.01% |
631
-22,668
| -97% | -$862K |
|
2125
Phunware
PHUN
$55.5M
| $24K | ﹤0.01% |
+190
| New | +$24K |
|