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
|
$107M |
| 2 |
SPDR Gold Trust
GLD
|
$65.8M |
| 3 |
NVIDIA
NVDA
|
$61.6M |
| 4 |
Apple
AAPL
|
$51.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$50.9M |
Top Sells
| 1 |
Qualcomm
QCOM
|
$25.2M |
| 2 |
Netflix
NFLX
|
$24.1M |
| 3 |
Walt Disney
DIS
|
$22.2M |
| 4 |
Snowflake
SNOW
|
$17.4M |
| 5 |
Advanced Micro Devices
AMD
|
$17.2M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15% |
| 3 | Healthcare | 10.19% |
| 4 | Financials | 8.16% |
| 5 | Communication Services | 6.81% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
76
Advanced Micro Devices
AMD
$263B
| $7.34M | 0.01% |
71,430
-167,485
| -70% | -$17.2M |
|
77
Hershey
HSY
$37.4B
| $7.23M | 0.01% |
36,127
+23,057
| +176% | +$4.61M |
|
78
Twilio
TWLO
$16.1B
| $7.2M | 0.01% |
123,005
-28,666
| -19% | -$1.68M |
|
79
SPDR S&P Retail ETF
XRT
$428M
| $6.99M | 0.01% |
+114,839
| New | +$6.99M |
|
80
BioNTech
BNTX
$24.1B
| $6.87M | 0.01% |
63,193
+63,186
| +902,657% | +$6.86M |
|
81
Booking.com
BKNG
$181B
| $6.58M | 0.01% |
+2,134
| New | +$6.58M |
|
82
Linde
LIN
$221B
| $6.58M | 0.01% |
+17,674
| New | +$6.58M |
|
83
3M
MMM
$81B
| $6.5M | 0.01% |
+82,992
| New | +$6.5M |
|
84
Danaher
DHR
$143B
| $6.49M | 0.01% |
29,497
+8,524
| +41% | +$1.87M |
|
85
Teva Pharmaceuticals
TEVA
$21.5B
| $6.47M | 0.01% |
633,977
-427,564
| -40% | -$4.36M |
|
86
Regeneron Pharmaceuticals
REGN
$59.8B
| $6.42M | 0.01% |
7,807
+990
| +15% | +$815K |
|
87
Fortinet
FTNT
$58.7B
| $6.36M | 0.01% |
108,344
+105,194
| +3,339% | +$6.17M |
|
88
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$29.4B
| $6.27M | ﹤0.01% |
61,474
+47,684
| +346% | +$4.86M |
|
|
HZNP
89
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $6.17M | ﹤0.01% |
53,301
-21,662
| -29% | -$2.51M |
|
90
Walmart
WMT
$793B
| $6.08M | ﹤0.01% |
+113,997
| New | +$6.08M |
|
91
ProShares UltraPro QQQ
TQQQ
$26B
| $5.94M | ﹤0.01% |
166,652
-314,438
| -65% | -$11.2M |
|
92
Gilead Sciences
GILD
$140B
| $5.9M | ﹤0.01% |
78,758
-43,557
| -36% | -$3.26M |
|
93
Novo Nordisk
NVO
$252B
| $5.9M | ﹤0.01% |
+64,905
| New | +$5.9M |
|
94
Norwegian Cruise Line
NCLH
$11.5B
| $5.86M | ﹤0.01% |
355,768
-63,701
| -15% | -$1.05M |
|
95
iShares Russell 1000 Growth ETF
IWF
$117B
| $5.77M | ﹤0.01% |
21,683
-6,286
| -22% | -$1.67M |
|
96
Truist Financial
TFC
$59.8B
| $5.72M | ﹤0.01% |
199,881
+110,283
| +123% | +$3.15M |
|
97
Invesco CurrencyShares Japanese Yen Trust
FXY
$559M
| $5.61M | ﹤0.01% |
90,241
+31,183
| +53% | +$1.94M |
|
98
iShares MSCI EAFE ETF
EFA
$65.4B
| $5.55M | ﹤0.01% |
+80,528
| New | +$5.55M |
|
99
Progressive
PGR
$145B
| $5.49M | ﹤0.01% |
39,381
+29,621
| +303% | +$4.13M |
|
100
Devon Energy
DVN
$22.3B
| $5.48M | ﹤0.01% |
+114,968
| New | +$5.48M |
|