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 |
Apple
AAPL
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Johnson & Johnson
JNJ
$429B
| $8.45M | 0.02% |
57,925
+41,086
| +244% | +$5.99M |
|
27
Charter Communications
CHTR
$35.7B
| $8.35M | 0.02% |
17,215
+11,656
| +210% | +$5.65M |
|
28
Lockheed Martin
LMT
$105B
| $8.13M | 0.02% |
20,871
+13,747
| +193% | +$5.35M |
|
29
Microsoft
MSFT
$3.76T
| $7.75M | 0.02% |
+49,118
| New | +$7.75M |
|
30
TSMC
TSM
$1.2T
| $7.59M | 0.02% |
+130,703
| New | +$7.59M |
|
31
VanEck Junior Gold Miners ETF
GDXJ
$6.91B
| $7.45M | 0.02% |
176,277
+140,172
| +388% | +$5.92M |
|
32
Citigroup
C
$175B
| $7.42M | 0.02% |
92,854
+47,014
| +103% | +$3.76M |
|
33
Bank of America
BAC
$371B
| $7.34M | 0.02% |
+208,350
| New | +$7.34M |
|
34
Hilton Worldwide
HLT
$64.7B
| $7.32M | 0.02% |
+65,964
| New | +$7.32M |
|
35
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.41B
| $6.99M | 0.02% |
+105,799
| New | +$6.99M |
|
36
Starbucks
SBUX
$99.2B
| $6.94M | 0.02% |
+78,941
| New | +$6.94M |
|
37
T-Mobile US
TMUS
$284B
| $6.86M | 0.02% |
87,537
+86,864
| +12,907% | +$6.81M |
|
38
Marathon Petroleum
MPC
$54.4B
| $6.42M | 0.01% |
+106,618
| New | +$6.42M |
|
39
Las Vegas Sands
LVS
$38B
| $6.09M | 0.01% |
+88,198
| New | +$6.09M |
|
40
Blackstone
BX
$131B
| $6.04M | 0.01% |
+108,015
| New | +$6.04M |
|
41
FedEx
FDX
$53.2B
| $5.93M | 0.01% |
39,210
-54,320
| -58% | -$8.21M |
|
42
lululemon athletica
LULU
$23.8B
| $5.74M | 0.01% |
+24,758
| New | +$5.74M |
|
43
Baidu
BIDU
$33.1B
| $5.58M | 0.01% |
44,166
+40,312
| +1,046% | +$5.09M |
|
44
ProShares Short VIX Short-Term Futures ETF
SVXY
$246M
| $5.52M | 0.01% |
169,214
-83,530
| -33% | -$2.72M |
|
45
Shopify
SHOP
$182B
| $5.46M | 0.01% |
+137,390
| New | +$5.46M |
|
46
Ulta Beauty
ULTA
$23.8B
| $5.45M | 0.01% |
21,542
-2,806
| -12% | -$710K |
|
47
Vanguard S&P 500 ETF
VOO
$724B
| $5.35M | 0.01% |
18,099
+9,140
| +102% | +$2.7M |
|
48
Applied Materials
AMAT
$124B
| $5.28M | 0.01% |
+86,510
| New | +$5.28M |
|
49
Ventas
VTR
$30.7B
| $5.16M | 0.01% |
89,336
+54,978
| +160% | +$3.17M |
|
50
Western Digital
WDC
$29.8B
| $5.02M | 0.01% |
104,648
+88,890
| +564% | +$4.26M |
|