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 |
Amazon
AMZN
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Boston Scientific
BSX
$159B
| $1.38M | 0.06% |
47,170
+31,441
| +200% | +$917K |
|
|
SAGE
177
DELISTED
Sage Therapeutics
SAGE
| $1.37M | 0.06% |
21,938
+12,680
| +137% | +$790K |
|
178
Everest Group
EG
$14.6B
| $1.36M | 0.06% |
5,955
+3,751
| +170% | +$857K |
|
|
MXIM
179
DELISTED
Maxim Integrated Products
MXIM
| $1.36M | 0.06% |
28,487
+4,666
| +20% | +$223K |
|
180
Assured Guaranty
AGO
$3.89B
| $1.35M | 0.06% |
35,774
+27,890
| +354% | +$1.05M |
|
181
Pacira BioSciences
PCRX
$1.22B
| $1.35M | 0.06% |
+35,959
| New | +$1.35M |
|
182
Invesco DB US Dollar Index Bullish Fund
UUP
$175M
| $1.35M | 0.06% |
55,791
+53,164
| +2,024% | +$1.29M |
|
183
Thor Industries
THO
$5.74B
| $1.35M | 0.06% |
10,714
+7,900
| +281% | +$994K |
|
184
IPG Photonics
IPGP
$3.42B
| $1.33M | 0.05% |
7,187
+5,576
| +346% | +$1.03M |
|
185
Peabody Energy
BTU
$2.08B
| $1.32M | 0.05% |
45,584
+41,818
| +1,110% | +$1.21M |
|
186
HF Sinclair
DINO
$9.65B
| $1.31M | 0.05% |
+36,460
| New | +$1.31M |
|
|
KANG
187
DELISTED
iKang Healthcare Group, Inc.
KANG
| $1.29M | 0.05% |
95,919
+26,665
| +39% | +$359K |
|
|
PF
188
DELISTED
Pinnacle Foods, Inc.
PF
| $1.29M | 0.05% |
22,477
+4,786
| +27% | +$274K |
|
|
GWPH
189
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $1.28M | 0.05% |
+12,659
| New | +$1.28M |
|
190
Industrial Select Sector SPDR Fund
XLI
$23B
| $1.28M | 0.05% |
+18,062
| New | +$1.28M |
|
191
iShares Select Dividend ETF
DVY
$20.6B
| $1.28M | 0.05% |
13,655
+12,711
| +1,347% | +$1.19M |
|
192
Teck Resources
TECK
$16.5B
| $1.25M | 0.05% |
59,078
+35,884
| +155% | +$756K |
|
193
Kennedy-Wilson Holdings
KW
$1.19B
| $1.24M | 0.05% |
67,036
-17,071
| -20% | -$317K |
|
|
SLCA
194
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $1.23M | 0.05% |
39,681
+23,647
| +147% | +$734K |
|
|
ETP
195
DELISTED
Energy Transfer Partners, L.P.
ETP
| $1.23M | 0.05% |
67,177
+12,302
| +22% | +$225K |
|
196
Air Lease Corp
AL
$7.13B
| $1.23M | 0.05% |
28,802
+12,661
| +78% | +$539K |
|
197
iShares Semiconductor ETF
SOXX
$13.4B
| $1.22M | 0.05% |
+7,711
| New | +$1.22M |
|
198
Ford
F
$46.2B
| $1.22M | 0.05% |
102,053
-73,429
| -42% | -$879K |
|
199
Kraft Heinz
KHC
$31.9B
| $1.22M | 0.05% |
15,714
-22,552
| -59% | -$1.75M |
|
|
GAP
200
The Gap, Inc.
GAP
$8.38B
| $1.21M | 0.05% |
40,993
-25,240
| -38% | -$745K |
|