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 |
Goldman Sachs
GS
|
$38.4M |
| 2 |
Micron Technology
MU
|
$23.7M |
| 3 |
NVIDIA
NVDA
|
$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$21.7M |
| 5 |
Wells Fargo
WFC
|
$20.4M |
Top Sells
| 1 |
Citigroup
C
|
$21.6M |
| 2 |
Apple
AAPL
|
$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$13.3M |
| 4 |
Eli Lilly
LLY
|
$9.69M |
| 5 |
Mastercard
MA
|
$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MBLY
51
DELISTED
Mobileye N.V.
MBLY
| $5.98M | 0.26% | 97,398 +78,264 | +409% | +$4.81M |
|
52
Dollar Tree
DLTR
$22.8B
| $5.86M | 0.25% | +74,670 | New | +$5.86M |
|
53
Invesco CurrencyShares Euro Currency Trust
FXE
$529M
| $5.78M | 0.25% | +55,848 | New | +$5.78M |
|
54
Petrobras
PBR
$79.9B
| $5.77M | 0.25% | 595,011 +544,865 | +1,087% | +$5.28M |
|
|
TIF
55
DELISTED
Tiffany & Co.
TIF
| $5.72M | 0.25% | +60,018 | New | +$5.72M |
|
|
SYT
56
DELISTED
Syngenta Ag
SYT
| $5.37M | 0.23% | +60,732 | New | +$5.37M |
|
57
Adobe
ADBE
$151B
| $5.33M | 0.23% | 40,990 -21,031 | -34% | -$2.74M |
|
58
Illumina
ILMN
$15.8B
| $5.33M | 0.23% | 31,253 +6,835 | +28% | +$1.17M |
|
|
APC
59
DELISTED
Anadarko Petroleum
APC
| $5.22M | 0.23% | 84,199 +63,289 | +303% | +$3.92M |
|
60
Northrop Grumman
NOC
$84.5B
| $5.22M | 0.23% | 21,936 +7,958 | +57% | +$1.89M |
|
61
Eaton
ETN
$136B
| $5.21M | 0.23% | 70,319 +38,964 | +124% | +$2.89M |
|
|
PXD
62
DELISTED
Pioneer Natural Resource Co.
PXD
| $5.07M | 0.22% | +27,233 | New | +$5.07M |
|
63
lululemon athletica
LULU
$24.2B
| $5.02M | 0.22% | 96,867 +42,605 | +79% | +$2.21M |
|
64
Qualcomm
QCOM
$173B
| $4.93M | 0.21% | +85,949 | New | +$4.93M |
|
65
NetEase
NTES
$86.2B
| $4.92M | 0.21% | 17,309 -775 | -4% | -$220K |
|
66
Blackstone
BX
$134B
| $4.87M | 0.21% | 164,086 +79,565 | +94% | +$2.36M |
|
67
General Motors
GM
$55.8B
| $4.85M | 0.21% | 137,192 -152,541 | -53% | -$5.39M |
|
68
AB InBev
BUD
$122B
| $4.82M | 0.21% | 43,942 +5,857 | +15% | +$643K |
|
69
Costco
COST
$418B
| $4.78M | 0.21% | 28,528 -23,449 | -45% | -$3.93M |
|
70
T-Mobile US
TMUS
$284B
| $4.69M | 0.2% | 72,536 +31,492 | +77% | +$2.03M |
|
71
VanEck Oil Services ETF
OIH
$886M
| $4.67M | 0.2% | 151,442 +112,780 | +292% | +$3.47M |
|
72
RTX Corp
RTX
$212B
| $4.64M | 0.2% | 41,327 +33,361 | +419% | +$3.74M |
|
73
Bath & Body Works
BBWI
$6.18B
| $4.61M | 0.2% | +97,846 | New | +$4.61M |
|
|
AET
74
DELISTED
Aetna Inc
AET
| $4.58M | 0.2% | 35,925 +13,252 | +58% | +$1.69M |
|
75
Nike
NKE
$114B
| $4.56M | 0.2% | 81,770 +70,369 | +617% | +$3.92M |
|