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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Bread Financial
BFH
$3.04B
| $2.74M | 0.01% |
24,381
+14,800
| +154% | +$1.66M |
|
102
Booking.com
BKNG
$179B
| $2.69M | 0.01% |
1,311
-4,234
| -76% | -$8.69M |
|
|
ALXN
103
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $2.69M | 0.01% |
24,879
-31,018
| -55% | -$3.35M |
|
104
Vanguard FTSE Emerging Markets ETF
VWO
$96.4B
| $2.63M | 0.01% |
59,210
-129
| -0.2% | -$5.74K |
|
105
iShares TIPS Bond ETF
TIP
$13.5B
| $2.63M | 0.01% |
+22,521
| New | +$2.63M |
|
|
REGI
106
DELISTED
Renewable Energy Group, Inc.
REGI
| $2.62M | 0.01% |
97,313
+48,976
| +101% | +$1.32M |
|
107
Lennar Class A
LEN
$34.6B
| $2.57M | 0.01% |
46,044
+42,987
| +1,406% | +$2.4M |
|
108
Tyson Foods
TSN
$20B
| $2.56M | 0.01% |
28,107
+5,065
| +22% | +$461K |
|
|
BBBY
109
DELISTED
Bed Bath & Beyond Inc
BBBY
| $2.56M | 0.01% |
147,759
+47,744
| +48% | +$826K |
|
110
Constellation Brands
STZ
$26B
| $2.53M | 0.01% |
13,308
+3,015
| +29% | +$572K |
|
111
BHP
BHP
$142B
| $2.51M | 0.01% |
+45,948
| New | +$2.51M |
|
112
Keysight
KEYS
$28.3B
| $2.5M | 0.01% |
24,369
+13,223
| +119% | +$1.36M |
|
|
RTN
113
DELISTED
Raytheon Company
RTN
| $2.49M | 0.01% |
11,334
-9,157
| -45% | -$2.01M |
|
114
Wayfair
W
$10.2B
| $2.48M | 0.01% |
+27,421
| New | +$2.48M |
|
115
CrowdStrike
CRWD
$103B
| $2.45M | 0.01% |
49,171
+25,081
| +104% | +$1.25M |
|
116
Vanguard Dividend Appreciation ETF
VIG
$94.8B
| $2.44M | 0.01% |
+19,551
| New | +$2.44M |
|
117
AB InBev
BUD
$117B
| $2.42M | 0.01% |
29,445
+5,678
| +24% | +$466K |
|
118
Galapagos
GLPG
$2.06B
| $2.4M | 0.01% |
11,620
+11,584
| +32,178% | +$2.4M |
|
119
eBay
EBAY
$40.9B
| $2.38M | 0.01% |
+65,902
| New | +$2.38M |
|
120
Okta
OKTA
$15.7B
| $2.34M | 0.01% |
20,282
+2,637
| +15% | +$304K |
|
|
PXD
121
DELISTED
Pioneer Natural Resource Co.
PXD
| $2.3M | 0.01% |
15,185
+13,741
| +952% | +$2.08M |
|
122
Texas Roadhouse
TXRH
$11.4B
| $2.3M | 0.01% |
+40,794
| New | +$2.3M |
|
123
iShares 7-10 Year Treasury Bond ETF
IEF
$35.6B
| $2.29M | 0.01% |
20,794
-7,904
| -28% | -$871K |
|
124
FibroGen
FGEN
$48.1M
| $2.27M | 0.01% |
52,929
+45,530
| +615% | +$1.95M |
|
|
BLUE
125
DELISTED
bluebird bio
BLUE
| $2.25M | ﹤0.01% |
25,608
+20,121
| +367% | +$1.77M |
|