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 | |
|---|---|---|---|---|---|---|
51
Synchrony
SYF
$28.1B
| $4.67M | 0.2% |
156,537
+83,094
| +113% | +$2.48M |
|
52
Eli Lilly
LLY
$661B
| $4.65M | 0.2% |
+56,457
| New | +$4.65M |
|
53
Procter & Gamble
PG
$370B
| $4.63M | 0.2% |
+53,113
| New | +$4.63M |
|
54
JD.com
JD
$44.2B
| $4.6M | 0.2% |
117,189
+8,845
| +8% | +$347K |
|
55
Salesforce
CRM
$245B
| $4.59M | 0.2% |
53,057
+19,329
| +57% | +$1.67M |
|
|
56
Gilead Sciences
GILD
$140B
| $4.57M | 0.2% |
64,544
-414,502
| -87% | -$29.3M |
|
57
Exxon Mobil
XOM
$477B
| $4.53M | 0.2% |
56,108
-29,286
| -34% | -$2.36M |
|
58
PepsiCo
PEP
$203B
| $4.5M | 0.2% |
38,946
-24,737
| -39% | -$2.86M |
|
59
Analog Devices
ADI
$120B
| $4.33M | 0.19% |
55,709
+54,152
| +3,478% | +$4.21M |
|
60
Yelp
YELP
$1.99B
| $4.27M | 0.19% |
142,351
+134,167
| +1,639% | +$4.03M |
|
61
Chevron
CVX
$318B
| $4.24M | 0.18% |
40,647
-16,376
| -29% | -$1.71M |
|
62
Delta Air Lines
DAL
$40B
| $4M | 0.17% |
74,497
+74,297
| +37,149% | +$3.99M |
|
|
TWTR
63
DELISTED
Twitter, Inc.
TWTR
| $4M | 0.17% |
223,759
+30,300
| +16% | +$541K |
|
|
AABA
64
DELISTED
Altaba Inc. Common Stock
AABA
| $3.93M | 0.17% |
+72,203
| New | +$3.93M |
|
|
DISH
65
DELISTED
DISH Network Corp.
DISH
| $3.92M | 0.17% |
62,530
+39,610
| +173% | +$2.49M |
|
66
Intuitive Surgical
ISRG
$158B
| $3.92M | 0.17% |
+4,193
| New | +$3.92M |
|
67
Invesco CurrencyShares Canadian Dollar Trust
FXC
$92.1M
| $3.87M | 0.17% |
50,914
+46,635
| +1,090% | +$3.55M |
|
|
ILG
68
DELISTED
ILG, Inc Common Stock
ILG
| $3.58M | 0.16% |
130,054
+87,958
| +209% | +$2.42M |
|
69
Eaton
ETN
$134B
| $3.55M | 0.15% |
45,625
-24,694
| -35% | -$1.92M |
|
70
Incyte
INCY
$17B
| $3.53M | 0.15% |
28,024
+4,762
| +20% | +$599K |
|
71
Macy's
M
$4.42B
| $3.49M | 0.15% |
150,158
-84,434
| -36% | -$1.96M |
|
72
YPF
YPF
$11.6B
| $3.48M | 0.15% |
159,103
+97,160
| +157% | +$2.13M |
|
73
Applied Materials
AMAT
$124B
| $3.39M | 0.15% |
+82,125
| New | +$3.39M |
|
74
Halliburton
HAL
$18.4B
| $3.36M | 0.15% |
78,608
+66,447
| +546% | +$2.84M |
|
75
Foot Locker
FL
$2.3B
| $3.34M | 0.15% |
67,767
+57,641
| +569% | +$2.84M |
|