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 | |
|---|---|---|---|---|---|---|
26
United Parcel Service
UPS
$72.3B
| $5.45M | 0.33% |
47,518
+18,712
| +65% | +$2.14M |
|
27
Constellation Brands
STZ
$25.8B
| $5.42M | 0.32% |
35,378
+23,667
| +202% | +$3.63M |
|
28
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.86B
| $5.39M | 0.32% |
130,080
+19,002
| +17% | +$787K |
|
29
Home Depot
HD
$406B
| $5.37M | 0.32% |
40,042
+32,037
| +400% | +$4.29M |
|
30
Biogen
BIIB
$20.8B
| $5.08M | 0.3% |
17,930
-25,831
| -59% | -$7.32M |
|
31
iShares MSCI EAFE ETF
EFA
$65.4B
| $5.03M | 0.3% |
87,210
+42,293
| +94% | +$2.44M |
|
32
Las Vegas Sands
LVS
$38B
| $4.9M | 0.29% |
+91,677
| New | +$4.9M |
|
33
DuPont de Nemours
DD
$31.6B
| $4.79M | 0.29% |
+83,641
| New | +$4.79M |
|
34
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.13B
| $4.69M | 0.28% |
46,390
+35,285
| +318% | +$3.57M |
|
35
Oracle
ORCL
$628B
| $4.41M | 0.26% |
114,807
+97,046
| +546% | +$3.73M |
|
36
Intuitive Surgical
ISRG
$158B
| $4.36M | 0.26% |
6,872
+989
| +17% | +$627K |
|
37
Visa
V
$681B
| $4.34M | 0.26% |
55,585
-11,500
| -17% | -$897K |
|
|
RDS.A
38
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $4.29M | 0.26% |
+78,860
| New | +$4.29M |
|
39
AB InBev
BUD
$116B
| $4.02M | 0.24% |
+38,085
| New | +$4.02M |
|
40
iShares MSCI Brazil ETF
EWZ
$5.35B
| $3.95M | 0.24% |
+118,440
| New | +$3.95M |
|
41
Wynn Resorts
WYNN
$13.1B
| $3.93M | 0.23% |
45,436
-81,407
| -64% | -$7.04M |
|
42
NetEase
NTES
$85.4B
| $3.89M | 0.23% |
18,084
+17,875
| +8,553% | +$3.85M |
|
43
SPDR Gold Trust
GLD
$111B
| $3.84M | 0.23% |
+35,024
| New | +$3.84M |
|
44
Starbucks
SBUX
$99.2B
| $3.79M | 0.23% |
68,241
-29,251
| -30% | -$1.62M |
|
45
Bausch Health
BHC
$2.72B
| $3.62M | 0.22% |
249,435
+108,716
| +77% | +$1.58M |
|
46
SPDR Dow Jones Industrial Average ETF Trust
DIA
$39.7B
| $3.61M | 0.22% |
+18,270
| New | +$3.61M |
|
|
COL
47
DELISTED
Rockwell Collins
COL
| $3.56M | 0.21% |
38,432
+35,182
| +1,083% | +$3.26M |
|
48
Crown Castle
CCI
$42.3B
| $3.53M | 0.21% |
+40,723
| New | +$3.53M |
|
49
lululemon athletica
LULU
$23.8B
| $3.53M | 0.21% |
54,262
+24,305
| +81% | +$1.58M |
|
50
Boston Scientific
BSX
$159B
| $3.46M | 0.21% |
+159,803
| New | +$3.46M |
|