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
|
$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$40.9M |
| 4 |
Apple
AAPL
|
$16.5M |
| 5 |
Visa
V
|
$12M |
Top Sells
| 1 |
Amazon
AMZN
|
$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
$33.4M |
| 4 |
Goldman Sachs
GS
|
$30.2M |
| 5 |
Boeing
BA
|
$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Norfolk Southern
NSC
$62.4B
| $2.51M | 0.01% |
16,798
-12,076
| -42% | -$1.81M |
|
77
AbbVie
ABBV
$374B
| $2.5M | 0.01% |
+27,149
| New | +$2.5M |
|
78
Domino's
DPZ
$15.8B
| $2.47M | 0.01% |
9,958
-2,657
| -21% | -$659K |
|
79
Bunge Global
BG
$16.3B
| $2.36M | 0.01% |
44,238
+41,083
| +1,302% | +$2.2M |
|
80
Blackrock
BLK
$170B
| $2.35M | 0.01% |
+5,971
| New | +$2.35M |
|
81
VanEck Oil Services ETF
OIH
$862M
| $2.27M | 0.01% |
8,102
+7,198
| +796% | +$2.02M |
|
82
KB Home
KBH
$4.34B
| $2.25M | 0.01% |
117,734
+106,559
| +954% | +$2.03M |
|
83
SPDR S&P Regional Banking ETF
KRE
$3.97B
| $2.23M | 0.01% |
47,569
+46,221
| +3,429% | +$2.16M |
|
84
Aflac
AFL
$57.1B
| $2.21M | 0.01% |
48,615
+7,125
| +17% | +$324K |
|
85
ServiceNow
NOW
$191B
| $2.13M | 0.01% |
11,972
-13,509
| -53% | -$2.4M |
|
86
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $2.12M | 0.01% |
96,772
-29,383
| -23% | -$644K |
|
87
iShares US Home Construction ETF
ITB
$3.18B
| $2.12M | 0.01% |
70,611
+64,600
| +1,075% | +$1.94M |
|
88
Bank OZK
OZK
$5.93B
| $2.11M | 0.01% |
92,351
+85,538
| +1,256% | +$1.95M |
|
89
MetLife
MET
$53.6B
| $2.09M | 0.01% |
+50,894
| New | +$2.09M |
|
|
SPLK
90
DELISTED
Splunk Inc
SPLK
| $2.09M | 0.01% |
19,925
-30,637
| -61% | -$3.21M |
|
91
Yelp
YELP
$1.99B
| $2.09M | 0.01% |
59,653
+11,033
| +23% | +$386K |
|
92
Capri Holdings
CPRI
$2.51B
| $2.07M | 0.01% |
+54,675
| New | +$2.07M |
|
93
Comerica
CMA
$9B
| $2.07M | 0.01% |
30,154
+29,048
| +2,626% | +$2M |
|
94
Arista Networks
ANET
$173B
| $2.06M | 0.01% |
+156,752
| New | +$2.06M |
|
|
PXD
95
DELISTED
Pioneer Natural Resource Co.
PXD
| $2.06M | 0.01% |
15,681
+8,681
| +124% | +$1.14M |
|
96
Direxion Daily Financial Bear 3x Shares
FAZ
$106M
| $2.05M | 0.01% |
+3,780
| New | +$2.05M |
|
|
BEL
97
DELISTED
Belmond Ltd.
BEL
| $2.05M | 0.01% |
81,798
+53,459
| +189% | +$1.34M |
|
98
Zimmer Biomet
ZBH
$20.8B
| $1.97M | 0.01% |
19,576
+11,979
| +158% | +$1.21M |
|
99
TJX Companies
TJX
$155B
| $1.97M | 0.01% |
+44,052
| New | +$1.97M |
|
100
Weibo
WB
$2.89B
| $1.97M | 0.01% |
33,723
-54,301
| -62% | -$3.17M |
|