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 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Williams Companies
WMB
$70.5B
| $4.99M | 0.37% |
135,538
-36,631
| -21% | -$1.35M |
|
|
SIAL
27
DELISTED
SIGMA - ALDRICH CORP
SIAL
| $4.81M | 0.35% |
34,601
+14,221
| +70% | +$1.98M |
|
28
Biogen
BIIB
$20.8B
| $4.74M | 0.35% |
16,253
-12,703
| -44% | -$3.71M |
|
29
HCA Healthcare
HCA
$95.4B
| $4.66M | 0.34% |
60,292
-21,334
| -26% | -$1.65M |
|
|
30
Apple
AAPL
$3.54T
| $4.29M | 0.31% |
38,901
-191,537
| -83% | -$21.1M |
|
|
APC
31
DELISTED
Anadarko Petroleum
APC
| $4.28M | 0.31% |
70,823
+48,638
| +219% | +$2.94M |
|
32
Starbucks
SBUX
$99.2B
| $3.92M | 0.29% |
68,899
+62,615
| +996% | +$3.56M |
|
|
PCP
33
DELISTED
PRECISION CASTPARTS CORP
PCP
| $3.6M | 0.26% |
15,676
+11,816
| +306% | +$2.71M |
|
34
American Express
AXP
$225B
| $3.59M | 0.26% |
48,425
-10,078
| -17% | -$747K |
|
35
Palo Alto Networks
PANW
$128B
| $3.46M | 0.25% |
20,097
+11,808
| +142% | +$2.03M |
|
36
Bausch Health
BHC
$2.72B
| $3.24M | 0.24% |
18,168
+9,317
| +105% | +$1.66M |
|
37
SPDR S&P 500 ETF Trust
SPY
$656B
| $3.11M | 0.23% |
+16,235
| New | +$3.11M |
|
|
WBA
38
DELISTED
Walgreens Boots Alliance
WBA
| $3.11M | 0.23% |
+37,433
| New | +$3.11M |
|
39
Qualcomm
QCOM
$170B
| $3.07M | 0.23% |
57,229
-8,026
| -12% | -$431K |
|
40
Electronic Arts
EA
$42B
| $3.04M | 0.22% |
+44,835
| New | +$3.04M |
|
41
Micron Technology
MU
$133B
| $3.01M | 0.22% |
201,260
-234,994
| -54% | -$3.52M |
|
42
AbbVie
ABBV
$374B
| $2.98M | 0.22% |
54,799
+27,448
| +100% | +$1.49M |
|
43
Teva Pharmaceuticals
TEVA
$21.5B
| $2.96M | 0.22% |
52,467
+25,244
| +93% | +$1.43M |
|
|
AET
44
DELISTED
Aetna Inc
AET
| $2.85M | 0.21% |
+26,029
| New | +$2.85M |
|
45
Bristol-Myers Squibb
BMY
$96.7B
| $2.58M | 0.19% |
43,515
+37,376
| +609% | +$2.21M |
|
46
Nike
NKE
$110B
| $2.55M | 0.19% |
+20,757
| New | +$2.55M |
|
47
VanEck Gold Miners ETF
GDX
$19.6B
| $2.54M | 0.19% |
184,992
+13,800
| +8% | +$190K |
|
48
Industrial Select Sector SPDR Fund
XLI
$23B
| $2.51M | 0.18% |
+50,229
| New | +$2.51M |
|
49
ConocoPhillips
COP
$118B
| $2.48M | 0.18% |
+51,787
| New | +$2.48M |
|
50
United States Oil Fund
USO
$967M
| $2.46M | 0.18% |
+167,748
| New | +$2.46M |
|