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
|
$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$37M |
| 3 |
Amgen
AMGN
|
$32.3M |
| 4 |
Micron Technology
MU
|
$29.4M |
| 5 |
Qualcomm
QCOM
|
$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$29.8M |
| 2 |
Gilead Sciences
GILD
|
$29.3M |
| 3 |
Goldman Sachs
GS
|
$27.7M |
| 4 |
Booking.com
BKNG
|
$26M |
| 5 |
AT&T
T
|
$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
APC
76
DELISTED
Anadarko Petroleum
APC
| $3.34M | 0.14% |
73,569
-10,630
| -13% | -$482K |
|
77
Vertex Pharmaceuticals
VRTX
$102B
| $3.33M | 0.14% |
+25,865
| New | +$3.33M |
|
78
Kraft Heinz
KHC
$31.9B
| $3.28M | 0.14% |
38,266
+35,668
| +1,373% | +$3.05M |
|
|
HES
79
DELISTED
Hess
HES
| $3.25M | 0.14% |
74,134
+68,461
| +1,207% | +$3M |
|
80
Ciena
CIEN
$13.4B
| $3.11M | 0.14% |
124,368
+38,970
| +46% | +$975K |
|
81
Weibo
WB
$2.89B
| $3.03M | 0.13% |
45,641
+17,182
| +60% | +$1.14M |
|
82
HSBC
HSBC
$224B
| $2.98M | 0.13% |
64,191
+11,574
| +22% | +$509K |
|
83
Lam Research
LRCX
$124B
| $2.97M | 0.13% |
20,987
+1,771
| +9% | +$250K |
|
84
Humana
HUM
$37.5B
| $2.85M | 0.12% |
11,850
-70,234
| -86% | -$16.9M |
|
85
Colgate-Palmolive
CL
$67.7B
| $2.82M | 0.12% |
38,057
-107,516
| -74% | -$7.97M |
|
86
Palo Alto Networks
PANW
$128B
| $2.81M | 0.12% |
21,035
-4,087
| -16% | -$547K |
|
87
Autodesk
ADSK
$67.9B
| $2.73M | 0.12% |
27,031
+19,570
| +262% | +$1.97M |
|
88
Bunge Global
BG
$16.3B
| $2.66M | 0.12% |
35,679
+34,239
| +2,378% | +$2.55M |
|
89
Oracle
ORCL
$628B
| $2.65M | 0.12% |
+52,859
| New | +$2.65M |
|
|
XYZ
90
Block, Inc.
XYZ
$46.2B
| $2.57M | 0.11% |
109,385
+63,180
| +137% | +$1.48M |
|
91
ProShares UltraPro S&P 500
UPRO
$4.43B
| $2.51M | 0.11% |
24,195
+6,282
| +35% | +$652K |
|
92
Illumina
ILMN
$15.2B
| $2.51M | 0.11% |
14,444
-16,809
| -54% | -$2.92M |
|
|
FNSR
93
DELISTED
Finisar Corp
FNSR
| $2.49M | 0.11% |
95,952
-5,231
| -5% | -$136K |
|
94
Capital One
COF
$142B
| $2.49M | 0.11% |
+30,087
| New | +$2.49M |
|
95
Corpay
CPAY
$22.6B
| $2.48M | 0.11% |
17,197
+1,064
| +7% | +$153K |
|
|
TIF
96
DELISTED
Tiffany & Co.
TIF
| $2.38M | 0.1% |
25,317
-34,701
| -58% | -$3.26M |
|
97
The Mosaic Company
MOS
$10.4B
| $2.34M | 0.1% |
+102,373
| New | +$2.34M |
|
98
Mercado Libre
MELI
$120B
| $2.33M | 0.1% |
9,276
+8,262
| +815% | +$2.07M |
|
99
Range Resources
RRC
$8.18B
| $2.31M | 0.1% |
99,661
+40,952
| +70% | +$949K |
|
|
SGI
100
Somnigroup International Inc.
SGI
$17.8B
| $2.28M | 0.1% |
+42,761
| New | +$2.28M |
|