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 | |
|---|---|---|---|---|---|---|
51
iShares MSCI Brazil ETF
EWZ
$5.35B
| $4.73M | 0.21% |
105,333
-150,906
| -59% | -$6.77M |
|
52
Pfizer
PFE
$140B
| $4.58M | 0.2% |
+135,875
| New | +$4.58M |
|
53
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.88B
| $4.48M | 0.2% |
+31,771
| New | +$4.48M |
|
54
Delta Air Lines
DAL
$40.5B
| $4.37M | 0.19% |
+79,700
| New | +$4.37M |
|
55
General Motors
GM
$55.2B
| $4.33M | 0.19% |
119,110
+43,072
| +57% | +$1.57M |
|
56
Amgen
AMGN
$152B
| $4.2M | 0.18% |
24,637
+2,850
| +13% | +$486K |
|
|
57
Boeing
BA
$175B
| $3.99M | 0.18% |
12,160
-64,019
| -84% | -$21M |
|
58
AbbVie
ABBV
$376B
| $3.95M | 0.17% |
41,700
-200
| -0.5% | -$18.9K |
|
59
Blackstone
BX
$133B
| $3.93M | 0.17% |
122,946
+67,620
| +122% | +$2.16M |
|
60
Walmart
WMT
$808B
| $3.92M | 0.17% |
+132,126
| New | +$3.92M |
|
61
Philip Morris
PM
$250B
| $3.85M | 0.17% |
38,692
+23,275
| +151% | +$2.31M |
|
62
iShares Biotechnology ETF
IBB
$5.65B
| $3.82M | 0.17% |
+35,801
| New | +$3.82M |
|
63
American Express
AXP
$229B
| $3.73M | 0.16% |
39,943
+13,540
| +51% | +$1.26M |
|
64
General Dynamics
GD
$86.9B
| $3.55M | 0.16% |
+16,069
| New | +$3.55M |
|
65
Invesco CurrencyShares Euro Currency Trust
FXE
$527M
| $3.52M | 0.15% |
+29,734
| New | +$3.52M |
|
66
New Oriental
EDU
$7.95B
| $3.5M | 0.15% |
39,984
+24,227
| +154% | +$2.12M |
|
67
DuPont de Nemours
DD
$31.9B
| $3.47M | 0.15% |
26,996
-5,455
| -17% | -$701K |
|
|
PARA
68
DELISTED
Paramount Global Class B
PARA
| $3.41M | 0.15% |
66,439
+20,972
| +46% | +$1.08M |
|
69
Albemarle
ALB
$9.32B
| $3.39M | 0.15% |
36,518
+35,739
| +4,588% | +$3.31M |
|
|
AET
70
DELISTED
Aetna Inc
AET
| $3.14M | 0.14% |
+18,598
| New | +$3.14M |
|
71
Bunge Global
BG
$16.3B
| $3.11M | 0.14% |
42,079
+28,118
| +201% | +$2.08M |
|
72
Honeywell
HON
$136B
| $3.09M | 0.14% |
+22,305
| New | +$3.09M |
|
73
Deere & Co
DE
$127B
| $3.01M | 0.13% |
19,387
-80,544
| -81% | -$12.5M |
|
74
Palo Alto Networks
PANW
$129B
| $2.97M | 0.13% |
+98,316
| New | +$2.97M |
|
75
Newmont
NEM
$82.2B
| $2.94M | 0.13% |
75,269
+63,150
| +521% | +$2.47M |
|