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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Allstate
ALL
$54.9B
| $1.98M | 0.01% |
+20,996
| New | +$1.98M |
|
127
Energy Transfer Partners
ET
$60.6B
| $1.96M | 0.01% |
127,273
+57,161
| +82% | +$878K |
|
|
SMAR
128
DELISTED
Smartsheet Inc.
SMAR
| $1.94M | 0.01% |
47,583
+41,092
| +633% | +$1.68M |
|
129
Centene
CNC
$14.1B
| $1.94M | 0.01% |
36,497
-13,557
| -27% | -$720K |
|
130
Roku
ROKU
$14.3B
| $1.93M | 0.01% |
29,899
-215,181
| -88% | -$13.9M |
|
131
Morgan Stanley
MS
$240B
| $1.92M | 0.01% |
+45,437
| New | +$1.92M |
|
132
Kroger
KR
$44.9B
| $1.91M | 0.01% |
77,722
+12,780
| +20% | +$314K |
|
133
TripAdvisor
TRIP
$2.09B
| $1.91M | 0.01% |
+37,117
| New | +$1.91M |
|
134
DaVita
DVA
$9.69B
| $1.91M | 0.01% |
35,140
+11,969
| +52% | +$650K |
|
|
BHVN
135
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $1.88M | 0.01% |
36,448
+29,110
| +397% | +$1.5M |
|
136
Acadia Pharmaceuticals
ACAD
$4.3B
| $1.83M | 0.01% |
68,181
+33,805
| +98% | +$907K |
|
137
Take-Two Interactive
TTWO
$44.4B
| $1.82M | 0.01% |
19,304
+9,720
| +101% | +$917K |
|
|
GAP
138
The Gap, Inc.
GAP
$8.88B
| $1.8M | 0.01% |
+68,699
| New | +$1.8M |
|
139
Penumbra
PEN
$10.9B
| $1.8M | 0.01% |
+12,225
| New | +$1.8M |
|
140
Honeywell
HON
$137B
| $1.8M | 0.01% |
11,299
+9,064
| +406% | +$1.44M |
|
141
Edison International
EIX
$21B
| $1.79M | 0.01% |
+28,961
| New | +$1.79M |
|
142
ING
ING
$71.7B
| $1.79M | 0.01% |
+147,750
| New | +$1.79M |
|
143
D.R. Horton
DHI
$52.7B
| $1.78M | ﹤0.01% |
42,896
-60,084
| -58% | -$2.49M |
|
144
Dentsply Sirona
XRAY
$2.86B
| $1.77M | ﹤0.01% |
35,642
+30,920
| +655% | +$1.53M |
|
145
WisdomTree Japan Hedged Equity Fund
DXJ
$3.77B
| $1.77M | ﹤0.01% |
34,914
-2,641
| -7% | -$134K |
|
146
SPDR S&P Metals & Mining ETF
XME
$2.28B
| $1.76M | ﹤0.01% |
59,355
+22,005
| +59% | +$653K |
|
147
Quest Diagnostics
DGX
$20.1B
| $1.75M | ﹤0.01% |
19,497
+17,904
| +1,124% | +$1.61M |
|
148
Mercado Libre
MELI
$123B
| $1.74M | ﹤0.01% |
+3,428
| New | +$1.74M |
|
149
International Paper
IP
$25.5B
| $1.74M | ﹤0.01% |
39,636
+513
| +1% | +$22.5K |
|
150
PPG Industries
PPG
$24.7B
| $1.73M | ﹤0.01% |
+15,312
| New | +$1.73M |
|