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 |
Gilead Sciences
GILD
|
$16.8M |
| 2 |
Apple
AAPL
|
$16.2M |
| 3 |
Booking.com
BKNG
|
$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$15.3M |
| 5 |
Wells Fargo
WFC
|
$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
IMPV
176
DELISTED
Imperva, Inc.
IMPV
| $914K | 0.06% |
17,018
-5,762
| -25% | -$309K |
|
177
Southwest Airlines
LUV
$16.4B
| $913K | 0.06% |
23,496
-10,040
| -30% | -$390K |
|
178
Invesco CurrencyShares Euro Currency Trust
FXE
$530M
| $912K | 0.06% |
+8,344
| New | +$912K |
|
179
United Parks & Resorts
PRKS
$2.99B
| $901K | 0.06% |
66,891
+22,440
| +50% | +$302K |
|
|
CLVS
180
DELISTED
Clovis Oncology, Inc.
CLVS
| $897K | 0.06% |
+24,883
| New | +$897K |
|
|
FNSR
181
DELISTED
Finisar Corp
FNSR
| $893K | 0.06% |
+29,983
| New | +$893K |
|
182
CarMax
KMX
$9.1B
| $891K | 0.06% |
+16,713
| New | +$891K |
|
183
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$13.5B
| $889K | 0.06% |
7,590
+3,014
| +66% | +$353K |
|
184
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.21B
| $886K | 0.06% |
+22,210
| New | +$886K |
|
185
Royal Caribbean
RCL
$95.3B
| $877K | 0.06% |
+11,709
| New | +$877K |
|
186
Waste Connections
WCN
$46.1B
| $872K | 0.06% |
17,514
-47,643
| -73% | -$2.37M |
|
|
RHT
187
DELISTED
Red Hat Inc
RHT
| $871K | 0.06% |
10,779
+9,088
| +537% | +$734K |
|
188
Eastman Chemical
EMN
$7.89B
| $864K | 0.06% |
12,780
+5,841
| +84% | +$395K |
|
189
American Water Works
AWK
$27.9B
| $861K | 0.06% |
11,508
+3,381
| +42% | +$253K |
|
190
Community Health Systems
CYH
$406M
| $858K | 0.06% |
74,435
+64,958
| +685% | +$749K |
|
191
Post Holdings
POST
$5.87B
| $858K | 0.06% |
+17,008
| New | +$858K |
|
|
ETP
192
DELISTED
Energy Transfer Partners L.p.
ETP
| $857K | 0.06% |
23,187
+21,192
| +1,062% | +$783K |
|
193
Credit Acceptance
CACC
$5.85B
| $854K | 0.06% |
4,249
+3,780
| +806% | +$760K |
|
194
Air Lease Corp
AL
$7.12B
| $834K | 0.06% |
29,213
+10,796
| +59% | +$308K |
|
|
FRGI
195
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $828K | 0.06% |
+34,507
| New | +$828K |
|
|
WUBA
196
DELISTED
58.COM INC
WUBA
| $825K | 0.06% |
17,319
+6,420
| +59% | +$306K |
|
197
Infosys
INFY
$67.8B
| $822K | 0.06% |
+104,230
| New | +$822K |
|
198
Ferrari
RACE
$87.4B
| $822K | 0.06% |
15,856
+3,311
| +26% | +$172K |
|
199
Petrobras
PBR
$78.4B
| $803K | 0.05% |
+86,171
| New | +$803K |
|
|
DYN
200
DELISTED
Dynegy, Inc.
DYN
| $794K | 0.05% |
64,117
+44,447
| +226% | +$550K |
|