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 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
DATA
126
DELISTED
Tableau Software, Inc.
DATA
| $955K | 0.07% |
11,980
+5,644
| +89% | +$450K |
|
|
SYT
127
DELISTED
Syngenta Ag
SYT
| $950K | 0.07% |
14,896
+9,136
| +159% | +$583K |
|
128
iShares Russell Mid-Cap ETF
IWR
$44.6B
| $948K | 0.07% |
+24,388
| New | +$948K |
|
129
United Parks & Resorts
PRKS
$2.99B
| $929K | 0.07% |
52,177
+44,833
| +610% | +$798K |
|
|
FIT
130
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $922K | 0.07% |
24,472
+4,938
| +25% | +$186K |
|
|
AMJ
131
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $919K | 0.07% |
30,248
+29,498
| +3,933% | +$896K |
|
|
SUNE
132
DELISTED
SUNEDISON, INC COM
SUNE
| $918K | 0.07% |
127,965
+108,559
| +559% | +$779K |
|
|
KKD
133
DELISTED
KRISPY KREME DOUGHNUTS INC
KKD
| $906K | 0.07% |
61,929
+9,464
| +18% | +$138K |
|
134
Alkermes
ALKS
$4.94B
| $898K | 0.07% |
+15,314
| New | +$898K |
|
135
iShares MSCI Taiwan ETF
EWT
$6.25B
| $893K | 0.07% |
33,933
+32,158
| +1,812% | +$846K |
|
136
Parker-Hannifin
PH
$96.1B
| $877K | 0.06% |
+9,018
| New | +$877K |
|
137
Synchrony
SYF
$28.1B
| $873K | 0.06% |
27,915
-9,934
| -26% | -$311K |
|
138
ProShares UltraPro Short S&P 500
SPXU
$523M
| $861K | 0.06% |
214
+189
| +756% | +$760K |
|
|
JOYY
139
JOYY Inc. American Depositary Shares
JOYY
$3.21B
| $858K | 0.06% |
15,747
+6,107
| +63% | +$333K |
|
140
VanEck Oil Services ETF
OIH
$880M
| $855K | 0.06% |
+1,556
| New | +$855K |
|
141
iShares MSCI Spain ETF
EWP
$1.36B
| $851K | 0.06% |
28,712
+26,255
| +1,069% | +$778K |
|
|
JOY
142
DELISTED
Joy Global Inc
JOY
| $847K | 0.06% |
56,776
+45,875
| +421% | +$684K |
|
143
AutoZone
AZO
$70.6B
| $841K | 0.06% |
1,163
-3,794
| -77% | -$2.74M |
|
|
TWX
144
DELISTED
Time Warner Inc
TWX
| $838K | 0.06% |
+12,194
| New | +$838K |
|
|
GOLD
145
DELISTED
Randgold Resources Ltd
GOLD
| $833K | 0.06% |
14,205
+3,257
| +30% | +$191K |
|
146
Novartis
NVS
$251B
| $820K | 0.06% |
9,957
+9,400
| +1,688% | +$774K |
|
|
STJ
147
DELISTED
St Jude Medical
STJ
| $819K | 0.06% |
12,996
+9,049
| +229% | +$570K |
|
148
Abercrombie & Fitch
ANF
$4.49B
| $817K | 0.06% |
38,588
+6,896
| +22% | +$146K |
|
149
Bunge Global
BG
$16.9B
| $809K | 0.06% |
+11,038
| New | +$809K |
|
150
Incyte
INCY
$16.9B
| $804K | 0.06% |
7,295
+4,590
| +170% | +$506K |
|