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 |
Alibaba
BABA
|
$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$97.6M |
| 3 |
Walt Disney
DIS
|
$73.4M |
| 4 |
Citigroup
C
|
$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$149M |
| 2 |
Amazon
AMZN
|
$107M |
| 3 |
SPDR Gold Trust
GLD
|
$58.6M |
| 4 |
Coinbase
COIN
|
$56.5M |
| 5 |
NVIDIA
NVDA
|
$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
ProShares Bitcoin Strategy ETF
BITO
$2.65B
| $12.2M | 0.01% |
596,737
+528,205
| +771% | +$10.8M |
|
52
American Tower
AMT
$91.9B
| $12M | 0.01% |
55,537
-12,417
| -18% | -$2.68M |
|
53
Alcoa
AA
$8.05B
| $11.8M | 0.01% |
347,332
+275,768
| +385% | +$9.38M |
|
|
PARA
54
DELISTED
Paramount Global Class B
PARA
| $11.6M | 0.01% |
781,676
+195,507
| +33% | +$2.89M |
|
55
Intuitive Surgical
ISRG
$158B
| $11.3M | 0.01% |
+33,585
| New | +$11.3M |
|
56
iShares 7-10 Year Treasury Bond ETF
IEF
$35.6B
| $11.2M | 0.01% |
+116,620
| New | +$11.2M |
|
57
Exxon Mobil
XOM
$477B
| $11.1M | 0.01% |
+111,025
| New | +$11.1M |
|
58
RTX Corp
RTX
$212B
| $10.9M | 0.01% |
+129,990
| New | +$10.9M |
|
59
iShares MSCI EAFE ETF
EFA
$65.4B
| $10.8M | 0.01% |
143,367
+62,839
| +78% | +$4.73M |
|
60
Enphase Energy
ENPH
$4.85B
| $10.6M | 0.01% |
80,468
+79,972
| +16,123% | +$10.6M |
|
61
Marathon Petroleum
MPC
$54.4B
| $10.5M | 0.01% |
+71,045
| New | +$10.5M |
|
62
Canadian Solar
CSIQ
$663M
| $10.5M | 0.01% |
401,444
+254,218
| +173% | +$6.67M |
|
63
United Airlines
UAL
$34.4B
| $10.5M | 0.01% |
254,171
+230,768
| +986% | +$9.52M |
|
64
Constellation Brands
STZ
$25.8B
| $10.4M | 0.01% |
42,827
+11,602
| +37% | +$2.8M |
|
65
Apple
AAPL
$3.54T
| $10.4M | 0.01% |
53,768
-245,491
| -82% | -$47.3M |
|
66
Spotify
SPOT
$143B
| $10.1M | 0.01% |
53,552
+49,970
| +1,395% | +$9.39M |
|
67
Mercado Libre
MELI
$120B
| $9.97M | 0.01% |
6,345
+5,938
| +1,459% | +$9.33M |
|
68
Apollo Global Management
APO
$75.9B
| $9.49M | 0.01% |
+101,840
| New | +$9.49M |
|
69
Zillow
Z
$20.2B
| $9.39M | 0.01% |
+162,285
| New | +$9.39M |
|
70
General Mills
GIS
$26.6B
| $9.38M | 0.01% |
143,935
-19,722
| -12% | -$1.28M |
|
71
Energy Select Sector SPDR Fund
XLE
$27.1B
| $9.32M | 0.01% |
+111,198
| New | +$9.32M |
|
72
Valero Energy
VLO
$48.3B
| $8.99M | 0.01% |
69,146
+31,990
| +86% | +$4.16M |
|
73
Vale
VALE
$43.6B
| $8.93M | 0.01% |
563,327
+424,465
| +306% | +$6.73M |
|
74
Tyson Foods
TSN
$20B
| $8.91M | 0.01% |
165,853
+98,498
| +146% | +$5.29M |
|
75
Starbucks
SBUX
$99.2B
| $8.81M | 0.01% |
91,721
-23,544
| -20% | -$2.26M |
|