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 |
Broadcom
AVGO
|
$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
$14.9M |
| 4 |
Walt Disney
DIS
|
$14.5M |
| 5 |
Alibaba
BABA
|
$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
abrdn Physical Gold Shares ETF
SGOL
$5.72B
| $1.02M | 0.08% |
85,060
+84,810
| +33,924% | +$1.02M |
|
127
Perrigo
PRGO
$3.12B
| $1M | 0.08% |
+7,853
| New | +$1M |
|
128
JB Hunt Transport Services
JBHT
$13.9B
| $1M | 0.08% |
11,901
+6,615
| +125% | +$557K |
|
129
F5
FFIV
$18.1B
| $959K | 0.08% |
9,060
-3,393
| -27% | -$359K |
|
130
Workday
WDAY
$61.7B
| $941K | 0.08% |
+12,248
| New | +$941K |
|
|
LKM
131
DELISTED
Link Motion Inc.
LKM
| $934K | 0.07% |
+204,125
| New | +$934K |
|
132
Liberty Global Class C
LBTYK
$4.12B
| $927K | 0.07% |
28,456
+28,032
| +6,611% | +$913K |
|
|
VNET
133
VNET Group
VNET
$2.13B
| $921K | 0.07% |
46,156
-61,990
| -57% | -$1.24M |
|
134
Pfizer
PFE
$141B
| $918K | 0.07% |
32,660
-192,774
| -86% | -$5.42M |
|
135
Bunge Global
BG
$16.9B
| $907K | 0.07% |
16,016
+2,938
| +22% | +$166K |
|
|
SPLK
136
DELISTED
Splunk Inc
SPLK
| $905K | 0.07% |
18,499
+10,583
| +134% | +$518K |
|
|
CBI
137
DELISTED
Chicago Bridge & Iron Nv
CBI
| $897K | 0.07% |
24,532
-19,127
| -44% | -$699K |
|
|
CELG
138
DELISTED
Celgene Corp
CELG
| $892K | 0.07% |
8,918
-33,025
| -79% | -$3.3M |
|
139
Mohawk Industries
MHK
$8.65B
| $889K | 0.07% |
4,659
+3,724
| +398% | +$711K |
|
|
IM
140
DELISTED
Ingram Micro
IM
| $888K | 0.07% |
24,738
+24,400
| +7,219% | +$876K |
|
141
Northrop Grumman
NOC
$83.2B
| $882K | 0.07% |
4,461
-1,582
| -26% | -$313K |
|
142
Sherwin-Williams
SHW
$92.9B
| $881K | 0.07% |
+9,288
| New | +$881K |
|
143
ProShares Ultra Russell2000
UWM
$369M
| $874K | 0.07% |
46,264
+41,004
| +780% | +$775K |
|
|
CST
144
DELISTED
CST Brands, Inc.
CST
| $854K | 0.07% |
22,316
+2,761
| +14% | +$106K |
|
145
Darden Restaurants
DRI
$24.5B
| $853K | 0.07% |
+12,873
| New | +$853K |
|
|
JOYY
146
JOYY Inc. American Depositary Shares
JOYY
$3.21B
| $839K | 0.07% |
13,624
+6,742
| +98% | +$415K |
|
147
Texas Capital Bancshares
TCBI
$3.96B
| $820K | 0.07% |
21,373
+19,295
| +929% | +$740K |
|
|
BLUE
148
DELISTED
bluebird bio
BLUE
| $817K | 0.07% |
1,485
+887
| +148% | +$488K |
|
149
First Trust Dow Jones Internet Index Fund ETF
FDN
$7.31B
| $816K | 0.07% |
11,963
+10,028
| +518% | +$684K |
|
150
Lockheed Martin
LMT
$108B
| $816K | 0.07% |
3,686
-1,822
| -33% | -$403K |
|