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 | |
|---|---|---|---|---|---|---|
1001
Precigen
PGEN
$1.23B
| $292K | ﹤0.01% |
78,944
+72,960
| +1,219% | +$270K |
|
1002
PTC
PTC
$24.8B
| $292K | ﹤0.01% |
2,414
+889
| +58% | +$108K |
|
1003
ProShares Ultra Financials
UYG
$893M
| $292K | ﹤0.01% |
4,323
-13,508
| -76% | -$912K |
|
|
SLCA
1004
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $292K | ﹤0.01% |
31,066
-9,926
| -24% | -$93.3K |
|
1005
Alamos Gold
AGI
$13.8B
| $291K | ﹤0.01% |
+37,953
| New | +$291K |
|
1006
Akamai
AKAM
$11.4B
| $290K | ﹤0.01% |
+2,486
| New | +$290K |
|
1007
NexGen Energy
NXE
$4.5B
| $289K | ﹤0.01% |
66,208
+4,133
| +7% | +$18K |
|
|
SOL
1008
Emeren Group
SOL
$95.5M
| $289K | ﹤0.01% |
48,544
+4,367
| +10% | +$26K |
|
1009
Aecom
ACM
$16.9B
| $288K | ﹤0.01% |
3,726
+2,645
| +245% | +$204K |
|
1010
Invesco S&P 500 Equal Weight Technology ETF
RSPT
$3.83B
| $288K | ﹤0.01% |
+8,890
| New | +$288K |
|
1011
American Tower
AMT
$92B
| $287K | ﹤0.01% |
982
-32,177
| -97% | -$9.4M |
|
1012
Moody's
MCO
$93B
| $287K | ﹤0.01% |
735
-548
| -43% | -$214K |
|
1013
Icahn Enterprises
IEP
$4.79B
| $286K | ﹤0.01% |
5,780
-6,554
| -53% | -$324K |
|
1014
Verint Systems
VRNT
$1.23B
| $285K | ﹤0.01% |
5,439
+51
| +0.9% | +$2.67K |
|
|
TGH
1015
DELISTED
Textainer Group Holdings limited
TGH
| $285K | ﹤0.01% |
+7,995
| New | +$285K |
|
|
DIDI
1016
DELISTED
DiDi Global Inc. American depositary shares, each four representing one Class A ordinary share
DIDI
| $285K | ﹤0.01% |
+57,229
| New | +$285K |
|
1017
Genworth Financial
GNW
$3.62B
| $284K | ﹤0.01% |
70,329
+25,721
| +58% | +$104K |
|
1018
StepStone Group
STEP
$4.99B
| $283K | ﹤0.01% |
6,829
+4,415
| +183% | +$183K |
|
1019
Carlisle Companies
CSL
$16.8B
| $282K | ﹤0.01% |
1,138
+186
| +20% | +$46.1K |
|
1020
Wingstop
WING
$7.67B
| $282K | ﹤0.01% |
1,635
+1,118
| +216% | +$193K |
|
1021
Bumble
BMBL
$702M
| $281K | ﹤0.01% |
+8,312
| New | +$281K |
|
|
ORC
1022
Orchid Island Capital
ORC
$1.03B
| $280K | ﹤0.01% |
12,486
+9,099
| +269% | +$204K |
|
1023
The SPAC and New Issue ETF
SPCX
$9.21M
| $280K | ﹤0.01% |
10,020
-58,769
| -85% | -$1.64M |
|
1024
Workhorse Group
WKHS
$18.3M
| $280K | ﹤0.01% |
258
-124
| -32% | -$135K |
|
1025
Descartes Systems
DSGX
$9.19B
| $279K | ﹤0.01% |
3,381
+2,981
| +745% | +$246K |
|