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 |
Apple
AAPL
|
$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
$59.4M |
| 5 |
Intel
INTC
|
$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 2 |
Direxion Daily FTSE China Bull 3X Shares
YINN
|
$50.4M |
| 3 |
iShares Silver Trust
SLV
|
$45.9M |
| 4 |
Ford
F
|
$32.5M |
| 5 |
Exxon Mobil
XOM
|
$20.4M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Nutrien
NTR
$27.7B
| $4.58M | ﹤0.01% |
57,443
+29,340
| +104% | +$2.34M |
|
102
Booking.com
BKNG
$180B
| $4.47M | ﹤0.01% |
+2,556
| New | +$4.47M |
|
103
Lam Research
LRCX
$123B
| $4.47M | ﹤0.01% |
10,490
-21,166
| -67% | -$9.02M |
|
104
MongoDB
MDB
$25B
| $4.42M | ﹤0.01% |
17,014
+8,823
| +108% | +$2.29M |
|
105
Wheaton Precious Metals
WPM
$46.7B
| $4.35M | ﹤0.01% |
120,765
+116,573
| +2,781% | +$4.2M |
|
106
iShares 7-10 Year Treasury Bond ETF
IEF
$35.6B
| $4.33M | ﹤0.01% |
42,375
-146,353
| -78% | -$15M |
|
107
Marriott International Class A Common Stock
MAR
$72B
| $4.27M | ﹤0.01% |
+31,417
| New | +$4.27M |
|
|
SGEN
108
DELISTED
Seagen Inc. Common Stock
SGEN
| $4.21M | ﹤0.01% |
23,806
+16,589
| +230% | +$2.94M |
|
109
EPAM Systems
EPAM
$9.52B
| $4.21M | ﹤0.01% |
14,287
-518
| -3% | -$153K |
|
110
Roblox
RBLX
$91.4B
| $4.08M | ﹤0.01% |
+124,055
| New | +$4.08M |
|
111
Canadian Solar
CSIQ
$666M
| $3.95M | ﹤0.01% |
126,835
+58,032
| +84% | +$1.81M |
|
112
Direxion Daily Energy Bull 2X Shares
ERX
$225M
| $3.93M | ﹤0.01% |
83,776
-26,731
| -24% | -$1.25M |
|
|
X
113
DELISTED
US Steel
X
| $3.9M | ﹤0.01% |
+217,733
| New | +$3.9M |
|
114
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.42B
| $3.89M | ﹤0.01% |
59,360
-6,888
| -10% | -$452K |
|
115
Domino's
DPZ
$15.8B
| $3.88M | ﹤0.01% |
+9,951
| New | +$3.88M |
|
116
Vermilion Energy
VET
$1.16B
| $3.87M | ﹤0.01% |
202,918
+29,286
| +17% | +$558K |
|
117
iShares MSCI Brazil ETF
EWZ
$5.38B
| $3.83M | ﹤0.01% |
+139,904
| New | +$3.83M |
|
118
Novavax
NVAX
$1.24B
| $3.82M | ﹤0.01% |
74,329
-10,949
| -13% | -$563K |
|
119
Suncor Energy
SU
$49.3B
| $3.79M | ﹤0.01% |
107,934
+52,856
| +96% | +$1.85M |
|
120
McDonald's
MCD
$225B
| $3.74M | ﹤0.01% |
+15,129
| New | +$3.74M |
|
121
Fidelity National Information Services
FIS
$35.5B
| $3.73M | ﹤0.01% |
40,683
+12,938
| +47% | +$1.19M |
|
122
Rio Tinto
RIO
$101B
| $3.73M | ﹤0.01% |
+61,135
| New | +$3.73M |
|
123
iShares 3-7 Year Treasury Bond ETF
IEI
$16.8B
| $3.73M | ﹤0.01% |
31,224
+9,291
| +42% | +$1.11M |
|
|
BRSL
124
Brightstar Lottery PLC
BRSL
$3.09B
| $3.72M | ﹤0.01% |
200,389
+54,889
| +38% | +$1.02M |
|
|
PXD
125
DELISTED
Pioneer Natural Resource Co.
PXD
| $3.71M | ﹤0.01% |
16,621
-3,878
| -19% | -$865K |
|