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 |
Tesla
TSLA
|
$27.1M |
| 2 |
Netflix
NFLX
|
$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
$18.3M |
| 5 |
Alibaba
BABA
|
$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
$71.9M |
| 2 |
Micron Technology
MU
|
$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$26.3M |
| 4 |
Boeing
BA
|
$21M |
| 5 |
Citigroup
C
|
$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Bank of America
BAC
$371B
| $7.84M | 0.34% |
+261,342
| New | +$7.84M |
|
27
Baidu
BIDU
$33.1B
| $7.58M | 0.33% |
33,951
-56,172
| -62% | -$12.5M |
|
28
Bristol-Myers Squibb
BMY
$96.7B
| $7.42M | 0.33% |
+117,278
| New | +$7.42M |
|
29
Goldman Sachs
GS
$221B
| $6.91M | 0.3% |
+27,446
| New | +$6.91M |
|
30
Energy Select Sector SPDR Fund
XLE
$27.1B
| $6.84M | 0.3% |
+101,449
| New | +$6.84M |
|
31
Colgate-Palmolive
CL
$67.7B
| $6.75M | 0.3% |
94,238
+6,422
| +7% | +$460K |
|
32
IBM
IBM
$227B
| $6.74M | 0.3% |
43,954
-38,974
| -47% | -$5.98M |
|
|
ESRX
33
DELISTED
Express Scripts Holding Company
ESRX
| $6.72M | 0.3% |
+97,296
| New | +$6.72M |
|
|
RTN
34
DELISTED
Raytheon Company
RTN
| $6.63M | 0.29% |
30,714
+24,145
| +368% | +$5.21M |
|
35
McDonald's
MCD
$226B
| $6.53M | 0.29% |
41,762
-15,067
| -27% | -$2.36M |
|
36
Johnson & Johnson
JNJ
$429B
| $6.53M | 0.29% |
+50,942
| New | +$6.53M |
|
37
UnitedHealth
UNH
$279B
| $6.02M | 0.26% |
28,118
-15,112
| -35% | -$3.23M |
|
38
Technology Select Sector SPDR Fund
XLK
$83.6B
| $5.87M | 0.26% |
+89,757
| New | +$5.87M |
|
39
ProShares UltraPro QQQ
TQQQ
$26B
| $5.84M | 0.26% |
40,562
-7,646
| -16% | -$1.1M |
|
40
Microsoft
MSFT
$3.76T
| $5.68M | 0.25% |
62,183
-85,386
| -58% | -$7.79M |
|
41
Wells Fargo
WFC
$258B
| $5.61M | 0.25% |
+107,029
| New | +$5.61M |
|
|
ALXN
42
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $5.57M | 0.24% |
49,991
+49,838
| +32,574% | +$5.55M |
|
43
SPDR S&P MidCap 400 ETF Trust
MDY
$23.6B
| $5.48M | 0.24% |
+16,042
| New | +$5.48M |
|
44
Chevron
CVX
$318B
| $5.4M | 0.24% |
47,384
-11,715
| -20% | -$1.34M |
|
45
WisdomTree Japan Hedged Equity Fund
DXJ
$3.72B
| $5.29M | 0.23% |
94,364
+22,948
| +32% | +$1.29M |
|
46
iShares MSCI Japan ETF
EWJ
$15.2B
| $5.01M | 0.22% |
82,555
-10,618
| -11% | -$644K |
|
47
Target
TGT
$42B
| $4.98M | 0.22% |
+71,700
| New | +$4.98M |
|
48
CVS Health
CVS
$93B
| $4.97M | 0.22% |
79,902
+20,058
| +34% | +$1.25M |
|
|
AABA
49
DELISTED
Altaba Inc. Common Stock
AABA
| $4.82M | 0.21% |
65,055
-137,294
| -68% | -$10.2M |
|
50
Exxon Mobil
XOM
$477B
| $4.76M | 0.21% |
63,767
+395
| +0.6% | +$29.5K |
|