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 |
NVIDIA
NVDA
|
$60M |
| 2 |
Microsoft
MSFT
|
$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$52.5M |
| 4 |
PayPal
PYPL
|
$40.9M |
| 5 |
Netflix
NFLX
|
$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
$48.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
Adobe
ADBE
|
$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 5 |
Enphase Energy
ENPH
|
$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
VanEck Gold Miners ETF
GDX
$19.6B
| $6.95M | 0.01% |
230,854
-186,030
| -45% | -$5.6M |
|
77
Apellis Pharmaceuticals
APLS
$3.51B
| $6.92M | 0.01% |
76,011
+72,588
| +2,121% | +$6.61M |
|
|
PXD
78
DELISTED
Pioneer Natural Resource Co.
PXD
| $6.8M | 0.01% |
+32,837
| New | +$6.8M |
|
79
British American Tobacco
BTI
$120B
| $6.67M | 0.01% |
200,780
+55,282
| +38% | +$1.84M |
|
|
BBBY
80
Bed Bath & Beyond, Inc.
BBBY
$491M
| $6.61M | 0.01% |
202,862
+202,832
| +676,107% | +$6.61M |
|
81
NIO
NIO
$14.2B
| $6.59M | 0.01% |
679,735
+74,753
| +12% | +$724K |
|
82
Caterpillar
CAT
$194B
| $6.46M | 0.01% |
+26,254
| New | +$6.46M |
|
83
Exxon Mobil
XOM
$477B
| $6.36M | 0.01% |
+59,295
| New | +$6.36M |
|
|
VMW
84
DELISTED
VMware, Inc
VMW
| $6.33M | 0.01% |
44,078
+14,373
| +48% | +$2.07M |
|
85
Alphabet (Google) Class A
GOOGL
$2.79T
| $6.31M | 0.01% |
52,720
+36,931
| +234% | +$4.42M |
|
86
Alcoa
AA
$8.05B
| $6.3M | 0.01% |
+185,715
| New | +$6.3M |
|
|
WBA
87
DELISTED
Walgreens Boots Alliance
WBA
| $6.29M | 0.01% |
220,938
+138,666
| +169% | +$3.95M |
|
88
Trade Desk
TTD
$26.3B
| $6.16M | 0.01% |
79,804
+15,778
| +25% | +$1.22M |
|
|
FTCH
89
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $5.79M | ﹤0.01% |
958,271
+193,466
| +25% | +$1.17M |
|
|
IMGN
90
DELISTED
Immunogen Inc
IMGN
| $5.77M | ﹤0.01% |
305,978
+186,966
| +157% | +$3.53M |
|
91
Comcast
CMCSA
$125B
| $5.77M | ﹤0.01% |
138,852
+65,168
| +88% | +$2.71M |
|
92
Goodyear
GT
$2.4B
| $5.74M | ﹤0.01% |
419,720
+96,688
| +30% | +$1.32M |
|
93
Bristol-Myers Squibb
BMY
$96.7B
| $5.71M | ﹤0.01% |
+89,359
| New | +$5.71M |
|
94
General Dynamics
GD
$86.8B
| $5.56M | ﹤0.01% |
25,856
-59,606
| -70% | -$12.8M |
|
95
Union Pacific
UNP
$132B
| $5.53M | ﹤0.01% |
27,006
-62,389
| -70% | -$12.8M |
|
96
Yelp
YELP
$1.99B
| $5.49M | ﹤0.01% |
150,658
+145,433
| +2,783% | +$5.29M |
|
97
Nutrien
NTR
$27.6B
| $5.47M | ﹤0.01% |
+92,597
| New | +$5.47M |
|
|
SPLK
98
DELISTED
Splunk Inc
SPLK
| $5.47M | ﹤0.01% |
51,538
+3,400
| +7% | +$361K |
|
99
GSK
GSK
$79.3B
| $5.39M | ﹤0.01% |
151,279
-38,297
| -20% | -$1.36M |
|
100
Roblox
RBLX
$92.5B
| $5.34M | ﹤0.01% |
+132,460
| New | +$5.34M |
|