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
|
$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$57.4M |
| 4 |
Citigroup
C
|
$23.4M |
| 5 |
Goldman Sachs
GS
|
$23M |
Top Sells
| 1 |
Apple
AAPL
|
$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$42.2M |
| 4 |
Micron Technology
MU
|
$26.1M |
| 5 |
Adobe
ADBE
|
$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Booking.com
BKNG
$178B
| $8.18M | 0.03% |
+4,121
| New | +$8.18M |
|
27
ProShares UltraPro QQQ
TQQQ
$26.7B
| $8.17M | 0.03% |
459,652
+246,468
| +116% | +$4.38M |
|
28
Home Depot
HD
$417B
| $8.16M | 0.03% |
+39,379
| New | +$8.16M |
|
29
Financial Select Sector SPDR Fund
XLF
$53.2B
| $7.61M | 0.02% |
275,868
+91,590
| +50% | +$2.53M |
|
30
Northrop Grumman
NOC
$83.2B
| $7.2M | 0.02% |
22,673
+9,651
| +74% | +$3.06M |
|
31
Cigna
CI
$81.5B
| $6.8M | 0.02% |
32,674
+13,270
| +68% | +$2.76M |
|
32
Philip Morris
PM
$251B
| $6.63M | 0.02% |
81,274
-28,361
| -26% | -$2.31M |
|
33
Weibo
WB
$2.87B
| $6.44M | 0.02% |
88,024
+9,716
| +12% | +$711K |
|
34
US Bancorp
USB
$75.9B
| $6.21M | 0.02% |
117,637
+45,620
| +63% | +$2.41M |
|
35
Align Technology
ALGN
$10.1B
| $6.12M | 0.02% |
15,633
+4,395
| +39% | +$1.72M |
|
|
SPLK
36
DELISTED
Splunk Inc
SPLK
| $6.11M | 0.02% |
50,562
+30,313
| +150% | +$3.66M |
|
37
Wynn Resorts
WYNN
$12.6B
| $5.68M | 0.02% |
44,671
+8,067
| +22% | +$1.02M |
|
38
Intuitive Surgical
ISRG
$167B
| $5.57M | 0.02% |
29,103
-4,764
| -14% | -$911K |
|
39
SPDR S&P Retail ETF
XRT
$441M
| $5.5M | 0.02% |
+107,727
| New | +$5.5M |
|
40
Illumina
ILMN
$15.7B
| $5.43M | 0.02% |
15,221
+8,287
| +120% | +$2.96M |
|
41
Morgan Stanley
MS
$236B
| $5.23M | 0.02% |
112,287
-183,702
| -62% | -$8.55M |
|
42
Norfolk Southern
NSC
$62.3B
| $5.21M | 0.02% |
28,874
+24,399
| +545% | +$4.4M |
|
43
Pfizer
PFE
$141B
| $5.15M | 0.02% |
+123,072
| New | +$5.15M |
|
44
Nutanix
NTNX
$18.7B
| $5.13M | 0.02% |
120,010
+9,775
| +9% | +$418K |
|
45
ServiceNow
NOW
$190B
| $4.98M | 0.02% |
25,481
+3,695
| +17% | +$723K |
|
46
Verizon
VZ
$187B
| $4.92M | 0.02% |
+92,102
| New | +$4.92M |
|
47
Phillips 66
PSX
$53.2B
| $4.92M | 0.02% |
43,614
-4,904
| -10% | -$553K |
|
|
RHT
48
DELISTED
Red Hat Inc
RHT
| $4.86M | 0.02% |
35,681
+10,764
| +43% | +$1.47M |
|
49
Regeneron Pharmaceuticals
REGN
$60.8B
| $4.85M | 0.02% |
12,014
-6,031
| -33% | -$2.44M |
|
50
Ulta Beauty
ULTA
$23.1B
| $4.69M | 0.02% |
16,626
+1,009
| +6% | +$285K |
|