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 |
SPDR S&P 500 ETF Trust
SPY
|
$50.9M |
| 2 |
Citigroup
C
|
$25.9M |
| 3 |
Apple
AAPL
|
$25.1M |
| 4 |
Amazon
AMZN
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.3M |
Top Sells
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
$17.4M |
| 2 |
Wells Fargo
WFC
|
$11.9M |
| 3 |
Goldman Sachs
GS
|
$9.91M |
| 4 |
MDVN
MEDIVATION, INC.
MDVN
|
$8.62M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
$8.15M |
Sector Composition
| 1 | Communication Services | 15.08% |
| 2 | Technology | 12.4% |
| 3 | Healthcare | 11.9% |
| 4 | Consumer Discretionary | 11.24% |
| 5 | Financials | 9.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
Northrop Grumman
NOC
$83.2B
| $3.25M | 0.19% |
+13,978
| New | +$3.25M |
|
|
BHI
52
DELISTED
Baker Hughes
BHI
| $3.13M | 0.19% |
+48,178
| New | +$3.13M |
|
53
Illumina
ILMN
$15.2B
| $3.13M | 0.19% |
24,418
+20,245
| +485% | +$2.59M |
|
54
Trip.com Group
TCOM
$46.6B
| $3.11M | 0.19% |
77,694
+7,504
| +11% | +$300K |
|
55
AT&T
T
$208B
| $3.1M | 0.19% |
+72,917
| New | +$3.1M |
|
|
KANG
56
DELISTED
iKang Healthcare Group, Inc.
KANG
| $3.04M | 0.18% |
175,618
+118,625
| +208% | +$2.06M |
|
57
Salesforce
CRM
$245B
| $3.01M | 0.18% |
43,931
-19,401
| -31% | -$1.33M |
|
58
Union Pacific
UNP
$132B
| $3M | 0.18% |
+28,979
| New | +$3M |
|
|
WBA
59
DELISTED
Walgreens Boots Alliance
WBA
| $2.98M | 0.18% |
+36,024
| New | +$2.98M |
|
|
HES
60
DELISTED
Hess
HES
| $2.96M | 0.18% |
+47,579
| New | +$2.96M |
|
61
ProShares UltraPro S&P 500
UPRO
$4.43B
| $2.94M | 0.18% |
36,010
+20,740
| +136% | +$1.7M |
|
62
Baidu
BIDU
$33.1B
| $2.87M | 0.17% |
+17,427
| New | +$2.87M |
|
63
Banc of California
BANC
$2.64B
| $2.83M | 0.17% |
+162,983
| New | +$2.83M |
|
64
Consumer Discretionary Select Sector SPDR Fund
XLY
$23.2B
| $2.81M | 0.17% |
34,548
+24,630
| +248% | +$2M |
|
|
AET
65
DELISTED
Aetna Inc
AET
| $2.81M | 0.17% |
22,673
+13,345
| +143% | +$1.65M |
|
66
Teva Pharmaceuticals
TEVA
$21.5B
| $2.7M | 0.16% |
74,561
-58,392
| -44% | -$2.12M |
|
67
NextEra Energy, Inc.
NEE
$148B
| $2.62M | 0.16% |
21,943
+8,987
| +69% | +$1.07M |
|
68
iShares US Real Estate ETF
IYR
$3.7B
| $2.61M | 0.16% |
+33,870
| New | +$2.61M |
|
69
NVIDIA
NVDA
$4.15T
| $2.59M | 0.15% |
24,249
-44,509
| -65% | -$4.75M |
|
70
Regeneron Pharmaceuticals
REGN
$59.8B
| $2.58M | 0.15% |
7,033
+3,152
| +81% | +$1.16M |
|
71
Financial Select Sector SPDR Fund
XLF
$53.6B
| $2.56M | 0.15% |
109,981
-10,968
| -9% | -$255K |
|
|
CHL
72
DELISTED
China Mobile Limited
CHL
| $2.52M | 0.15% |
+48,009
| New | +$2.52M |
|
73
Elevance Health
ELV
$72.4B
| $2.46M | 0.15% |
17,139
+2,413
| +16% | +$347K |
|
74
T-Mobile US
TMUS
$284B
| $2.36M | 0.14% |
41,044
-8,128
| -17% | -$467K |
|
75
Energy Transfer Partners
ET
$60.3B
| $2.33M | 0.14% |
120,418
-187,259
| -61% | -$3.62M |
|