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
|
$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 4 |
Alibaba
BABA
|
$9.66M |
| 5 |
Intel
INTC
|
$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
$36.8M |
| 2 |
Gilead Sciences
GILD
|
$31.2M |
| 3 |
Booking.com
BKNG
|
$29M |
| 4 |
Amazon
AMZN
|
$25.6M |
| 5 |
Baidu
BIDU
|
$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Vertex Pharmaceuticals
VRTX
$103B
| $1.38M | 0.16% |
+11,681
| New | +$1.38M |
|
77
Amgen
AMGN
$154B
| $1.35M | 0.16% |
8,422
+8,030
| +2,048% | +$1.28M |
|
78
eBay
EBAY
$40.7B
| $1.31M | 0.15% |
22,796
+325
| +1% | +$18.7K |
|
79
Qorvo
QRVO
$8.4B
| $1.3M | 0.15% |
+16,252
| New | +$1.3M |
|
80
Boston Beer
SAM
$2.35B
| $1.27M | 0.15% |
+4,762
| New | +$1.27M |
|
|
JOY
81
DELISTED
Joy Global Inc
JOY
| $1.27M | 0.15% |
32,350
+27,210
| +529% | +$1.07M |
|
82
Monster Beverage
MNST
$61B
| $1.22M | 0.14% |
+8,833
| New | +$1.22M |
|
|
PXD
83
DELISTED
Pioneer Natural Resource Co.
PXD
| $1.21M | 0.14% |
7,410
-9,199
| -55% | -$1.5M |
|
84
FedEx
FDX
$53.3B
| $1.17M | 0.14% |
7,074
+2,866
| +68% | +$474K |
|
85
Wabtec
WAB
$32.9B
| $1.16M | 0.14% |
12,227
-874
| -7% | -$83K |
|
86
Diageo
DEO
$61.4B
| $1.15M | 0.13% |
10,401
+4,082
| +65% | +$451K |
|
87
Macerich
MAC
$4.59B
| $1.15M | 0.13% |
13,628
+13,422
| +6,516% | +$1.13M |
|
88
KLA
KLAC
$111B
| $1.12M | 0.13% |
19,250
+16,315
| +556% | +$951K |
|
|
EMC
89
DELISTED
EMC CORPORATION
EMC
| $1.12M | 0.13% |
43,824
-7,752
| -15% | -$198K |
|
90
Palo Alto Networks
PANW
$127B
| $1.09M | 0.13% |
+7,494
| New | +$1.09M |
|
91
iShares MSCI Brazil ETF
EWZ
$5.36B
| $1.08M | 0.13% |
+34,371
| New | +$1.08M |
|
92
Health Care Select Sector SPDR Fund
XLV
$33.9B
| $1.08M | 0.13% |
+14,857
| New | +$1.08M |
|
93
Kohl's
KSS
$1.83B
| $1.06M | 0.12% |
+13,558
| New | +$1.06M |
|
94
The Mosaic Company
MOS
$10.4B
| $1.06M | 0.12% |
22,978
+20,468
| +815% | +$942K |
|
|
KKD
95
DELISTED
KRISPY KREME DOUGHNUTS INC
KKD
| $1.06M | 0.12% |
52,870
-4,242
| -7% | -$84.7K |
|
96
PNC Financial Services
PNC
$80.8B
| $1.04M | 0.12% |
11,105
+8,165
| +278% | +$761K |
|
|
WWAV
97
DELISTED
The WhiteWave Foods Company
WWAV
| $1.02M | 0.12% |
+22,905
| New | +$1.02M |
|
98
First Solar
FSLR
$21.2B
| $978K | 0.11% |
16,369
-10,586
| -39% | -$632K |
|
99
Morgan Stanley
MS
$238B
| $968K | 0.11% |
27,136
+26,124
| +2,581% | +$932K |
|
100
Travelers Companies
TRV
$61.7B
| $962K | 0.11% |
+8,898
| New | +$962K |
|