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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
801
Cinemark Holdings
CNK
$3.24B
| $223K | ﹤0.01% |
22,373
+19,840
| +783% | +$198K |
|
802
Monster Beverage
MNST
$62.3B
| $223K | ﹤0.01% |
5,566
-122
| -2% | -$4.89K |
|
803
Greif
GEF
$3.6B
| $222K | ﹤0.01% |
+6,134
| New | +$222K |
|
|
SIOX
804
DELISTED
Sio Gene Therapies Inc. Common Stock
SIOX
| $222K | ﹤0.01% |
48,244
+40,657
| +536% | +$187K |
|
805
Standard BioTools
LAB
$508M
| $221K | ﹤0.01% |
+29,761
| New | +$221K |
|
806
Repay Holdings
RPAY
$509M
| $220K | ﹤0.01% |
9,393
+474
| +5% | +$11.1K |
|
807
Coty
COTY
$3.6B
| $219K | ﹤0.01% |
81,398
+52,264
| +179% | +$141K |
|
808
Direxion Work From Home ETF
WFH
$14.1M
| $219K | ﹤0.01% |
+4,073
| New | +$219K |
|
809
A10 Networks
ATEN
$1.29B
| $218K | ﹤0.01% |
34,238
+31,825
| +1,319% | +$203K |
|
810
Baxter International
BAX
$12.6B
| $218K | ﹤0.01% |
2,720
-12,731
| -82% | -$1.02M |
|
811
BGC Group
BGC
$4.84B
| $218K | ﹤0.01% |
91,027
+19,284
| +27% | +$46.2K |
|
812
VanEck High Yield Muni ETF
HYD
$3.38B
| $218K | ﹤0.01% |
3,646
+3,443
| +1,696% | +$206K |
|
813
Talos Energy
TALO
$1.7B
| $218K | ﹤0.01% |
33,933
+23,591
| +228% | +$152K |
|
814
Trex
TREX
$6.68B
| $218K | ﹤0.01% |
+3,053
| New | +$218K |
|
|
VMW
815
DELISTED
VMware, Inc
VMW
| $218K | ﹤0.01% |
1,522
-4,219
| -73% | -$604K |
|
816
FMC
FMC
$4.77B
| $217K | ﹤0.01% |
+2,054
| New | +$217K |
|
817
Under Armour
UAA
$2.16B
| $217K | ﹤0.01% |
+19,331
| New | +$217K |
|
|
WPX
818
DELISTED
WPX Energy, Inc.
WPX
| $217K | ﹤0.01% |
44,348
+37,338
| +533% | +$183K |
|
819
Innospec
IOSP
$2.08B
| $215K | ﹤0.01% |
+3,396
| New | +$215K |
|
820
Cardlytics
CDLX
$61.2M
| $213K | ﹤0.01% |
3,019
-811
| -21% | -$57.2K |
|
821
Lamar Advertising Co
LAMR
$13B
| $213K | ﹤0.01% |
3,219
-597
| -16% | -$39.5K |
|
822
Asure Software
ASUR
$220M
| $212K | ﹤0.01% |
28,127
+17,691
| +170% | +$133K |
|
823
Brixmor Property Group
BRX
$8.6B
| $212K | ﹤0.01% |
18,166
-5,475
| -23% | -$63.9K |
|
|
VBIV
824
DELISTED
VBI Vaccines, Inc. New Common Stock (Canada)
VBIV
| $212K | ﹤0.01% |
2,472
+2,469
| +82,300% | +$212K |
|
825
Compañía de Minas Buenaventura
BVN
$5.13B
| $211K | ﹤0.01% |
17,322
-12,638
| -42% | -$154K |
|