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
|
$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$57.4M |
| 4 |
Citigroup
C
|
$23.4M |
| 5 |
Goldman Sachs
GS
|
$23M |
Top Sells
| 1 |
Apple
AAPL
|
$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$42.2M |
| 4 |
Micron Technology
MU
|
$26.1M |
| 5 |
Adobe
ADBE
|
$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
GE Aerospace
GE
$293B
| $3.66M | 0.01% |
+324,037
| New | +$3.66M |
|
77
PG&E
PCG
$33.7B
| $3.63M | 0.01% |
78,867
-140,157
| -64% | -$6.45M |
|
78
Stanley Black & Decker
SWK
$11.3B
| $3.59M | 0.01% |
+24,483
| New | +$3.59M |
|
79
Snap
SNAP
$12.3B
| $3.58M | 0.01% |
+421,838
| New | +$3.58M |
|
80
Edwards Lifesciences
EW
$47.7B
| $3.54M | 0.01% |
20,349
-9,255
| -31% | -$1.61M |
|
81
iShares MSCI Mexico ETF
EWW
$1.81B
| $3.54M | 0.01% |
69,098
+64,002
| +1,256% | +$3.28M |
|
82
TAL Education Group
TAL
$6.34B
| $3.48M | 0.01% |
135,325
+58,388
| +76% | +$1.5M |
|
83
CyberArk
CYBR
$23B
| $3.47M | 0.01% |
43,411
+37,524
| +637% | +$3M |
|
84
ProShares Ultra S&P500
SSO
$7.13B
| $3.46M | 0.01% |
27,154
-668
| -2% | -$85.2K |
|
|
AMRN
85
Amarin Corp
AMRN
$311M
| $3.46M | 0.01% |
212,689
+193,801
| +1,026% | +$3.15M |
|
86
Kraft Heinz
KHC
$31.9B
| $3.46M | 0.01% |
62,755
+19,602
| +45% | +$1.08M |
|
87
TransDigm Group
TDG
$72B
| $3.41M | 0.01% |
9,168
+1,730
| +23% | +$644K |
|
88
VanEck Semiconductor ETF
SMH
$26.6B
| $3.37M | 0.01% |
31,660
+28,905
| +1,049% | +$3.08M |
|
|
ETFC
89
DELISTED
E*Trade Financial Corporation
ETFC
| $3.34M | 0.01% |
63,763
+37,389
| +142% | +$1.96M |
|
|
VMW
90
DELISTED
VMware, Inc
VMW
| $3.28M | 0.01% |
+21,033
| New | +$3.28M |
|
91
Vipshop
VIPS
$8.36B
| $3.26M | 0.01% |
521,805
+448,246
| +609% | +$2.8M |
|
92
VanEck Gold Miners ETF
GDX
$19.6B
| $3.23M | 0.01% |
174,407
+51,868
| +42% | +$961K |
|
|
ANDV
93
DELISTED
Andeavor
ANDV
| $3.22M | 0.01% |
20,948
-10,746
| -34% | -$1.65M |
|
94
PayPal
PYPL
$66.5B
| $3.21M | 0.01% |
36,544
+24,756
| +210% | +$2.17M |
|
95
Delta Air Lines
DAL
$40B
| $3.21M | 0.01% |
55,454
-63,064
| -53% | -$3.65M |
|
96
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $3.2M | 0.01% |
126,155
+119,133
| +1,697% | +$3.02M |
|
97
iShares 7-10 Year Treasury Bond ETF
IEF
$35.6B
| $3.11M | 0.01% |
+30,767
| New | +$3.11M |
|
|
AIMC
98
DELISTED
Altra Industrial Motion Corp.
AIMC
| $3.11M | 0.01% |
+75,213
| New | +$3.11M |
|
|
CTXS
99
DELISTED
Citrix Systems Inc
CTXS
| $3.04M | 0.01% |
+27,310
| New | +$3.04M |
|
100
Starbucks
SBUX
$99.2B
| $3.01M | 0.01% |
52,915
-71,402
| -57% | -$4.06M |
|