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 | |
|---|---|---|---|---|---|---|
|
WLL
51
DELISTED
Whiting Petroleum Corporation
WLL
| $2.03M | 0.24% |
65,598
-8,961
| -12% | -$277K |
|
|
TIF
52
DELISTED
Tiffany & Co.
TIF
| $1.95M | 0.23% |
22,125
+14,920
| +207% | +$1.31M |
|
|
GMCR
53
DELISTED
KEURIG GREEN MTN INC
GMCR
| $1.94M | 0.23% |
17,346
+10,101
| +139% | +$1.13M |
|
|
HSP
54
DELISTED
HOSPIRA INC
HSP
| $1.9M | 0.22% |
21,626
+20,995
| +3,327% | +$1.84M |
|
|
55
Baidu
BIDU
$33.1B
| $1.87M | 0.22% |
8,997
-61,931
| -87% | -$12.9M |
|
56
3M
MMM
$80.3B
| $1.85M | 0.22% |
+11,245
| New | +$1.85M |
|
57
PepsiCo
PEP
$205B
| $1.82M | 0.21% |
+19,018
| New | +$1.82M |
|
58
Walt Disney
DIS
$213B
| $1.78M | 0.21% |
+16,969
| New | +$1.78M |
|
59
Public Storage
PSA
$50.6B
| $1.73M | 0.2% |
8,758
+7,337
| +516% | +$1.45M |
|
60
Yelp
YELP
$2.01B
| $1.72M | 0.2% |
36,405
-3,955
| -10% | -$187K |
|
61
Energy Transfer Partners
ET
$60.7B
| $1.7M | 0.2% |
26,867
+25,494
| +1,857% | +$1.62M |
|
62
Vipshop
VIPS
$8.27B
| $1.63M | 0.19% |
55,527
-6,535
| -11% | -$192K |
|
63
lululemon athletica
LULU
$24.2B
| $1.62M | 0.19% |
+25,332
| New | +$1.62M |
|
|
SNDK
64
DELISTED
SANDISK CORP
SNDK
| $1.6M | 0.19% |
+25,168
| New | +$1.6M |
|
65
Regeneron Pharmaceuticals
REGN
$62.1B
| $1.59M | 0.18% |
3,514
+2,404
| +217% | +$1.09M |
|
66
NOV
NOV
$4.92B
| $1.56M | 0.18% |
31,251
+17,164
| +122% | +$858K |
|
67
JD.com
JD
$44.1B
| $1.54M | 0.18% |
52,461
+25,490
| +95% | +$749K |
|
68
ProShares Ultra QQQ
QLD
$8.84B
| $1.48M | 0.17% |
+10,377
| New | +$1.48M |
|
|
RCPT
69
DELISTED
RECEPTOS INC COM STK (DE)
RCPT
| $1.48M | 0.17% |
+8,974
| New | +$1.48M |
|
70
Wynn Resorts
WYNN
$13.1B
| $1.47M | 0.17% |
11,650
+6,002
| +106% | +$755K |
|
71
Trip.com Group
TCOM
$46.4B
| $1.45M | 0.17% |
24,704
-17,514
| -41% | -$1.03M |
|
72
Home Depot
HD
$403B
| $1.42M | 0.16% |
12,481
+10,260
| +462% | +$1.16M |
|
73
Prudential Financial
PRU
$37.9B
| $1.41M | 0.16% |
17,583
+14,625
| +494% | +$1.17M |
|
74
American Express
AXP
$230B
| $1.39M | 0.16% |
+17,799
| New | +$1.39M |
|
75
VanEck Gold Miners ETF
GDX
$19.7B
| $1.38M | 0.16% |
75,866
+12,613
| +20% | +$230K |
|