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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Buckle
BKE
$3.06B
| $90K | ﹤0.01% |
2,063
-1,187
| -37% | -$51.8K |
|
1127
Ocugen
OCGN
$334M
| $90K | ﹤0.01% |
90,963
-39,499
| -30% | -$39.1K |
|
|
SVM
1128
Silvercorp Metals
SVM
$1.13B
| $90K | ﹤0.01% |
20,645
-100,265
| -83% | -$437K |
|
1129
Zynex
ZYXI
$44.2M
| $90K | ﹤0.01% |
11,130
+11,124
| +185,400% | +$90K |
|
1130
Aemetis
AMTX
$136M
| $89K | ﹤0.01% |
38,847
-9,535
| -20% | -$21.8K |
|
1131
CMS Energy
CMS
$21.3B
| $89K | ﹤0.01% |
1,273
+71
| +6% | +$4.96K |
|
1132
Trinseo
TSE
$81.6M
| $89K | ﹤0.01% |
17,521
+11,978
| +216% | +$60.8K |
|
1133
Eldorado Gold
EGO
$5.45B
| $88K | ﹤0.01% |
+5,103
| New | +$88K |
|
|
EU
1134
enCore Energy
EU
$438M
| $88K | ﹤0.01% |
22,029
+19,246
| +692% | +$76.9K |
|
1135
Lindsay Corp
LNN
$1.5B
| $88K | ﹤0.01% |
707
+265
| +60% | +$33K |
|
1136
Americold
COLD
$3.76B
| $87K | ﹤0.01% |
3,091
+2,985
| +2,816% | +$84K |
|
1137
Universal Technical Institute
UTI
$1.48B
| $87K | ﹤0.01% |
+5,368
| New | +$87K |
|
1138
Atlas Lithium Corp
ATLX
$95.1M
| $86K | ﹤0.01% |
12,773
-3,685
| -22% | -$24.8K |
|
1139
Prosperity Bancshares
PB
$6.4B
| $86K | ﹤0.01% |
1,197
-1,171
| -49% | -$84.1K |
|
1140
Lantronix
LTRX
$184M
| $85K | ﹤0.01% |
20,815
+8,255
| +66% | +$33.7K |
|
1141
CubeSmart
CUBE
$9.29B
| $85K | ﹤0.01% |
+1,584
| New | +$85K |
|
1142
Methode Electronics
MEI
$292M
| $84K | ﹤0.01% |
+7,046
| New | +$84K |
|
1143
Sterling Infrastructure
STRL
$9.16B
| $84K | ﹤0.01% |
580
-183
| -24% | -$26.5K |
|
1144
Magnachip Semiconductor
MX
$110M
| $83K | ﹤0.01% |
17,907
+141
| +0.8% | +$654 |
|
1145
Synaptics
SYNA
$2.67B
| $83K | ﹤0.01% |
+1,079
| New | +$83K |
|
1146
VirTra
VTSI
$62.8M
| $83K | ﹤0.01% |
13,420
+3,557
| +36% | +$22K |
|
|
DADA
1147
DELISTED
Dada Nexus
DADA
| $82K | ﹤0.01% |
43,327
+31,279
| +260% | +$59.2K |
|
1148
FLEX LNG
FLNG
$1.37B
| $82K | ﹤0.01% |
+3,244
| New | +$82K |
|
1149
Immersion
IMMR
$221M
| $82K | ﹤0.01% |
+9,287
| New | +$82K |
|
1150
Unusual Whales Subversive Democratic Trading ETF
NANC
$242M
| $82K | ﹤0.01% |
2,207
-2,012
| -48% | -$74.8K |
|