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 |
Amazon
AMZN
|
$102M |
| 2 |
TSMC
TSM
|
$29.6M |
| 3 |
JPMorgan Chase
JPM
|
$21.9M |
| 4 |
Boeing
BA
|
$18.8M |
| 5 |
Target
TGT
|
$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$94.2M |
| 2 |
Tesla
TSLA
|
$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$81.5M |
| 4 |
NVIDIA
NVDA
|
$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
B
26
Barrick Mining Corporation
B
$46.3B
| $11.6M | 0.02% |
412,853
-31,234
| -7% | -$878K |
|
27
Salesforce
CRM
$245B
| $11.3M | 0.02% |
45,151
+29,646
| +191% | +$7.45M |
|
28
Las Vegas Sands
LVS
$38B
| $10.9M | 0.01% |
233,915
+121,443
| +108% | +$5.67M |
|
29
Lockheed Martin
LMT
$105B
| $10.8M | 0.01% |
28,188
+27,354
| +3,280% | +$10.5M |
|
|
TIF
30
DELISTED
Tiffany & Co.
TIF
| $10.7M | 0.01% |
92,638
+2,388
| +3% | +$277K |
|
31
VanEck Gold Miners ETF
GDX
$19.6B
| $10.1M | 0.01% |
258,233
-588,088
| -69% | -$23M |
|
32
Alphabet (Google) Class C
GOOG
$2.79T
| $10.1M | 0.01% |
+6,863
| New | +$10.1M |
|
33
Etsy
ETSY
$5.15B
| $10M | 0.01% |
+82,455
| New | +$10M |
|
34
United States Oil Fund
USO
$967M
| $9.75M | 0.01% |
344,726
-185,354
| -35% | -$5.24M |
|
35
Marriott International Class A Common Stock
MAR
$72B
| $9.73M | 0.01% |
105,147
+100,326
| +2,081% | +$9.29M |
|
36
Broadcom
AVGO
$1.42T
| $9.59M | 0.01% |
26,313
+6,471
| +33% | +$2.36M |
|
37
Berkshire Hathaway Class B
BRK.B
$1.08T
| $9.31M | 0.01% |
43,733
-33,934
| -44% | -$7.23M |
|
38
UnitedHealth
UNH
$279B
| $9.28M | 0.01% |
+29,769
| New | +$9.28M |
|
|
WORK
39
DELISTED
Slack Technologies, Inc.
WORK
| $8.98M | 0.01% |
334,268
-82,259
| -20% | -$2.21M |
|
40
Financial Select Sector SPDR Fund
XLF
$53.6B
| $8.89M | 0.01% |
369,493
-450,851
| -55% | -$10.9M |
|
41
Eli Lilly
LLY
$661B
| $8.74M | 0.01% |
59,071
+11,733
| +25% | +$1.74M |
|
42
Visa
V
$681B
| $8.63M | 0.01% |
+43,168
| New | +$8.63M |
|
43
Match Group
MTCH
$9.04B
| $8.38M | 0.01% |
75,743
+27,813
| +58% | +$3.08M |
|
44
Industrial Select Sector SPDR Fund
XLI
$23B
| $8.35M | 0.01% |
+108,526
| New | +$8.35M |
|
|
XYZ
45
Block, Inc.
XYZ
$46.2B
| $8.31M | 0.01% |
+51,111
| New | +$8.31M |
|
46
Utilities Select Sector SPDR Fund
XLU
$20.8B
| $8.16M | 0.01% |
137,381
+108,145
| +370% | +$6.42M |
|
|
TWTR
47
DELISTED
Twitter, Inc.
TWTR
| $7.98M | 0.01% |
179,256
-198,838
| -53% | -$8.85M |
|
48
Caterpillar
CAT
$194B
| $7.64M | 0.01% |
51,231
-17,576
| -26% | -$2.62M |
|
49
Chevron
CVX
$318B
| $7.32M | 0.01% |
+101,668
| New | +$7.32M |
|
50
Workhorse Group
WKHS
$20M
| $7.28M | 0.01% |
288,001
+273,727
| +1,918% | +$6.92M |
|