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 | |
|---|---|---|---|---|---|---|
|
MSB
1076
Mesabi Trust
MSB
$416M
| $254K | ﹤0.01% |
9,619
+7,828
| +437% | +$207K |
|
1077
Theravance Biopharma
TBPH
$709M
| $254K | ﹤0.01% |
23,065
+22,215
| +2,614% | +$245K |
|
|
AQUA
1078
DELISTED
Evoqua Water Technologies Corp. Common Stock
AQUA
| $253K | ﹤0.01% |
5,417
-15,018
| -73% | -$701K |
|
1079
Guardant Health
GH
$6.89B
| $252K | ﹤0.01% |
+2,521
| New | +$252K |
|
1080
Lantheus
LNTH
$3.68B
| $252K | ﹤0.01% |
+8,738
| New | +$252K |
|
|
TRHC
1081
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
| $252K | ﹤0.01% |
16,849
+14,494
| +615% | +$217K |
|
1082
Teekay Tankers
TNK
$1.82B
| $250K | ﹤0.01% |
22,951
+16,591
| +261% | +$181K |
|
1083
Trinseo
TSE
$85.6M
| $249K | ﹤0.01% |
4,751
-1,005
| -17% | -$52.7K |
|
1084
Veru
VERU
$51.3M
| $248K | ﹤0.01% |
4,216
+3,257
| +340% | +$192K |
|
1085
Digi International
DGII
$1.32B
| $247K | ﹤0.01% |
10,066
+9,341
| +1,288% | +$229K |
|
|
CMBT
1086
CMB.TECH NV
CMBT
$2.8B
| $247K | ﹤0.01% |
+27,896
| New | +$247K |
|
|
JJC
1087
DELISTED
iPath Series B Bloomberg Copper Subindex Total ReturnSM ETN
JJC
| $247K | ﹤0.01% |
+11,086
| New | +$247K |
|
1088
Arista Networks
ANET
$180B
| $246K | ﹤0.01% |
6,864
-46,080
| -87% | -$1.65M |
|
1089
Eldorado Gold
EGO
$5.7B
| $246K | ﹤0.01% |
26,414
-24,513
| -48% | -$228K |
|
|
SAGE
1090
DELISTED
Sage Therapeutics
SAGE
| $246K | ﹤0.01% |
5,783
-6,896
| -54% | -$293K |
|
1091
abrdn Physical Silver Shares ETF
SIVR
$2.6B
| $245K | ﹤0.01% |
10,963
+1,244
| +13% | +$27.8K |
|
|
FTCV
1092
DELISTED
FinTech Acquisition Corp. V Class A Common Stock
FTCV
| $245K | ﹤0.01% |
24,717
+14,858
| +151% | +$147K |
|
|
FBC
1093
DELISTED
Flagstar Bancorp, Inc. New
FBC
| $245K | ﹤0.01% |
5,126
+3,983
| +348% | +$190K |
|
1094
Dayforce
DAY
$10.9B
| $244K | ﹤0.01% |
2,336
+1,018
| +77% | +$106K |
|
|
FOE
1095
DELISTED
Ferro Corporation
FOE
| $244K | ﹤0.01% |
11,219
+6,374
| +132% | +$139K |
|
1096
Commercial Vehicle Group
CVGI
$72.1M
| $243K | ﹤0.01% |
30,241
+9,080
| +43% | +$73K |
|
1097
The Honest Company
HNST
$437M
| $243K | ﹤0.01% |
30,055
+24,454
| +437% | +$198K |
|
1098
Sasol
SSL
$4.54B
| $243K | ﹤0.01% |
14,866
-15,760
| -51% | -$258K |
|
1099
Talos Energy
TALO
$1.71B
| $243K | ﹤0.01% |
24,887
+14,501
| +140% | +$142K |
|
|
EBIX
1100
DELISTED
Ebix Inc
EBIX
| $243K | ﹤0.01% |
7,999
-1,403
| -15% | -$42.6K |
|