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 |
NVIDIA
NVDA
|
$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
$18M |
| 4 |
Netflix
NFLX
|
$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
$41.3M |
| 3 |
Walt Disney
DIS
|
$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Advance Auto Parts
AAP
$3.54B
| $2.58M | 0.01% |
16,738
+9,924
| +146% | +$1.53M |
|
77
Ferrari
RACE
$88.2B
| $2.55M | 0.01% |
15,807
+10,134
| +179% | +$1.64M |
|
78
Hasbro
HAS
$11.1B
| $2.49M | 0.01% |
+23,536
| New | +$2.49M |
|
|
MRTX
79
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $2.48M | 0.01% |
24,075
+10,640
| +79% | +$1.1M |
|
80
WEC Energy
WEC
$34.4B
| $2.45M | 0.01% |
29,379
+27,531
| +1,490% | +$2.29M |
|
81
Morgan Stanley
MS
$237B
| $2.41M | 0.01% |
55,029
+9,592
| +21% | +$420K |
|
|
BHVN
82
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $2.38M | 0.01% |
54,434
+17,986
| +49% | +$787K |
|
83
iShares TIPS Bond ETF
TIP
$13.5B
| $2.37M | 0.01% |
20,506
+9,331
| +83% | +$1.08M |
|
84
PVH
PVH
$4.1B
| $2.35M | 0.01% |
24,883
+15,090
| +154% | +$1.43M |
|
85
Walmart
WMT
$793B
| $2.34M | 0.01% |
+21,200
| New | +$2.34M |
|
86
CyberArk
CYBR
$23B
| $2.32M | 0.01% |
+18,181
| New | +$2.32M |
|
87
Armstrong World Industries
AWI
$8.42B
| $2.3M | 0.01% |
23,663
+23,493
| +13,819% | +$2.28M |
|
88
SPDR S&P Regional Banking ETF
KRE
$3.97B
| $2.29M | 0.01% |
+42,935
| New | +$2.29M |
|
89
Yelp
YELP
$1.99B
| $2.25M | 0.01% |
65,863
+40,422
| +159% | +$1.38M |
|
|
NBIS
90
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.7B
| $2.25M | 0.01% |
59,209
-67,249
| -53% | -$2.55M |
|
|
WORK
91
DELISTED
Slack Technologies, Inc.
WORK
| $2.24M | 0.01% |
+59,814
| New | +$2.24M |
|
|
CADE
92
DELISTED
Cadence Bancorporation
CADE
| $2.23M | 0.01% |
107,347
+79,127
| +280% | +$1.65M |
|
|
ETFC
93
DELISTED
E*Trade Financial Corporation
ETFC
| $2.23M | 0.01% |
49,963
+29,638
| +146% | +$1.32M |
|
94
Waste Management
WM
$90.4B
| $2.22M | 0.01% |
19,271
+16,364
| +563% | +$1.89M |
|
|
DISH
95
DELISTED
DISH Network Corp.
DISH
| $2.2M | 0.01% |
57,220
+44,640
| +355% | +$1.71M |
|
|
MDR
96
DELISTED
McDermott International
MDR
| $2.2M | 0.01% |
+227,232
| New | +$2.2M |
|
97
AutoZone
AZO
$70.1B
| $2.17M | 0.01% |
+1,976
| New | +$2.17M |
|
98
Deere & Co
DE
$127B
| $2.16M | 0.01% |
13,063
+7,362
| +129% | +$1.22M |
|
99
Liberty Global Class C
LBTYK
$4.1B
| $2.15M | 0.01% |
80,998
+46,708
| +136% | +$1.24M |
|
100
Bath & Body Works
BBWI
$6.3B
| $2.15M | 0.01% |
82,275
-1,468
| -2% | -$38.3K |
|