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
|
$54.1M |
| 2 |
Apple
AAPL
|
$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
$16.5M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 2 |
McDonald's
MCD
|
$8.52M |
| 3 |
Ralph Lauren
RL
|
$5.22M |
| 4 |
Intel
INTC
|
$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Verizon
VZ
$187B
| $1.15M | 0.1% |
+24,597
| New | +$1.15M |
|
127
United Rentals
URI
$62.7B
| $1.14M | 0.1% |
+13,016
| New | +$1.14M |
|
|
DNKN
128
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $1.14M | 0.1% |
20,738
+16,286
| +366% | +$895K |
|
|
CBI
129
DELISTED
Chicago Bridge & Iron Nv
CBI
| $1.13M | 0.09% |
22,526
-19,934
| -47% | -$997K |
|
130
Plains All American Pipeline
PAA
$12.1B
| $1.1M | 0.09% |
25,317
+21,745
| +609% | +$947K |
|
131
GSK
GSK
$81.5B
| $1.1M | 0.09% |
21,089
+17,435
| +477% | +$907K |
|
132
Invesco CurrencyShares Euro Currency Trust
FXE
$530M
| $1.09M | 0.09% |
10,002
+2,774
| +38% | +$303K |
|
133
DTE Energy
DTE
$28.4B
| $1.09M | 0.09% |
17,170
+13,812
| +411% | +$877K |
|
134
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.2B
| $1.08M | 0.09% |
+1,212
| New | +$1.08M |
|
135
Liberty Global Class A
LBTYA
$4.05B
| $1.07M | 0.09% |
23,980
+17,481
| +269% | +$779K |
|
136
Citigroup
C
$176B
| $1.05M | 0.09% |
18,942
+13,799
| +268% | +$762K |
|
137
TripAdvisor
TRIP
$2.05B
| $1.04M | 0.09% |
+11,941
| New | +$1.04M |
|
138
Consolidated Edison
ED
$35.4B
| $1.03M | 0.09% |
17,861
+10,292
| +136% | +$595K |
|
|
ISSI
139
DELISTED
INTEGRATED SILICON SOLUTN INC
ISSI
| $1.02M | 0.09% |
+46,187
| New | +$1.02M |
|
|
ANN
140
DELISTED
ANN INC
ANN
| $1.02M | 0.09% |
21,054
+15,560
| +283% | +$751K |
|
|
KKD
141
DELISTED
KRISPY KREME DOUGHNUTS INC
KKD
| $1.01M | 0.08% |
52,465
-405
| -0.8% | -$7.8K |
|
142
Energy Transfer Partners
ET
$59.7B
| $1M | 0.08% |
31,232
-22,502
| -42% | -$722K |
|
|
WX
143
DELISTED
WUXI PHARMATECH, CAYMAN INC REPSTG 8 ORD SHS
WX
| $984K | 0.08% |
23,296
+20,823
| +842% | +$880K |
|
144
Medtronic
MDT
$119B
| $979K | 0.08% |
13,225
+9,667
| +272% | +$716K |
|
145
Schlumberger
SLB
$53.4B
| $973K | 0.08% |
11,292
-29,117
| -72% | -$2.51M |
|
146
Macy's
M
$4.64B
| $967K | 0.08% |
+14,338
| New | +$967K |
|
147
Thermo Fisher Scientific
TMO
$186B
| $966K | 0.08% |
7,445
+6,765
| +995% | +$878K |
|
148
Alnylam Pharmaceuticals
ALNY
$59.4B
| $944K | 0.08% |
+7,883
| New | +$944K |
|
149
Bread Financial
BFH
$3.09B
| $936K | 0.08% |
+4,021
| New | +$936K |
|
150
RTX Corp
RTX
$211B
| $930K | 0.08% |
+13,332
| New | +$930K |
|