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 |
Alphabet (Google) Class C
GOOG
|
$54.1M |
| 2 |
Apple
AAPL
|
$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
$16.5M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 2 |
McDonald's
MCD
|
$8.52M |
| 3 |
Ralph Lauren
RL
|
$5.22M |
| 4 |
Intel
INTC
|
$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
UnitedHealth
UNH
$279B
| $4.76M | 0.4% |
39,026
+12,417
| +47% | +$1.51M |
|
27
American Express
AXP
$225B
| $4.55M | 0.38% |
58,503
+40,704
| +229% | +$3.16M |
|
28
Viatris
VTRS
$12.3B
| $4.53M | 0.38% |
66,742
+58,926
| +754% | +$4M |
|
|
29
Intel
INTC
$105B
| $4.12M | 0.35% |
135,473
-155,910
| -54% | -$4.74M |
|
30
Qualcomm
QCOM
$170B
| $4.09M | 0.34% |
65,255
+17,070
| +35% | +$1.07M |
|
31
Boeing
BA
$176B
| $4.08M | 0.34% |
29,427
+9,004
| +44% | +$1.25M |
|
32
Yelp
YELP
$1.99B
| $3.6M | 0.3% |
83,645
+47,240
| +130% | +$2.03M |
|
33
Amgen
AMGN
$153B
| $3.54M | 0.3% |
23,076
+14,654
| +174% | +$2.25M |
|
34
GoPro
GPRO
$234M
| $3.32M | 0.28% |
63,029
+14,522
| +30% | +$765K |
|
35
AutoZone
AZO
$70.1B
| $3.31M | 0.28% |
4,957
+4,292
| +645% | +$2.86M |
|
|
CTRX
36
DELISTED
CATAMARAN CORP COM STK (CDA)
CTRX
| $3.27M | 0.27% |
53,534
-38,757
| -42% | -$2.37M |
|
37
CF Industries
CF
$13.7B
| $3.16M | 0.27% |
49,199
+47,671
| +3,120% | +$2.67M |
|
38
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.86B
| $3.11M | 0.26% |
66,674
+62,427
| +1,470% | +$2.91M |
|
39
VanEck Gold Miners ETF
GDX
$19.6B
| $3.04M | 0.25% |
171,192
+95,326
| +126% | +$1.69M |
|
40
WisdomTree Japan Hedged Equity Fund
DXJ
$3.72B
| $3.01M | 0.25% |
52,707
-468
| -0.9% | -$26.8K |
|
|
MNDT
41
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $2.97M | 0.25% |
60,725
+2,633
| +5% | +$129K |
|
42
iShares China Large-Cap ETF
FXI
$6.65B
| $2.97M | 0.25% |
64,397
+52,173
| +427% | +$2.4M |
|
43
Ionis Pharmaceuticals
IONS
$9.64B
| $2.91M | 0.24% |
50,499
+10,251
| +25% | +$590K |
|
44
Southwest Airlines
LUV
$17B
| $2.89M | 0.24% |
87,310
+73,538
| +534% | +$2.43M |
|
45
Vanguard Real Estate ETF
VNQ
$34.1B
| $2.89M | 0.24% |
38,692
+28,503
| +280% | +$2.13M |
|
46
FedEx
FDX
$53.2B
| $2.87M | 0.24% |
16,851
+9,777
| +138% | +$1.67M |
|
47
American International
AIG
$45.1B
| $2.86M | 0.24% |
+46,319
| New | +$2.86M |
|
|
SIAL
48
DELISTED
SIGMA - ALDRICH CORP
SIAL
| $2.84M | 0.24% |
20,380
+15,055
| +283% | +$2.1M |
|
|
CAVM
49
DELISTED
Cavium, Inc.
CAVM
| $2.83M | 0.24% |
+41,116
| New | +$2.83M |
|
50
ProShares Ultra Bloomberg Crude Oil
UCO
$376M
| $2.71M | 0.23% |
60,019
+22,763
| +61% | +$2.38M |
|