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 | |
|---|---|---|---|---|---|---|
226
CyberArk
CYBR
$23.3B
| $695K | 0.05% |
+14,031
| New | +$695K |
|
|
LORL
227
DELISTED
Loral Space and Communications, Inc.
LORL
| $690K | 0.05% |
17,647
+16,998
| +2,619% | +$665K |
|
228
Kimberly-Clark
KMB
$43.1B
| $689K | 0.05% |
+5,467
| New | +$689K |
|
229
Sabre
SABR
$675M
| $682K | 0.05% |
24,210
+23,614
| +3,962% | +$665K |
|
230
ProShares UltraShort Bloomberg Crude Oil
SCO
$125M
| $681K | 0.05% |
843
+600
| +247% | +$485K |
|
|
OAK
231
DELISTED
OAKTREE CAPITAL GROUP, LLC
OAK
| $680K | 0.05% |
16,049
+13,082
| +441% | +$554K |
|
|
BREW
232
DELISTED
Craft Brew Alliance, Inc.
BREW
| $673K | 0.05% |
35,761
+6,853
| +24% | +$129K |
|
233
Vanda Pharmaceuticals
VNDA
$272M
| $672K | 0.05% |
40,395
+33,242
| +465% | +$553K |
|
234
Polaris
PII
$3.33B
| $667K | 0.05% |
8,617
+1,394
| +19% | +$108K |
|
|
APOL
235
DELISTED
Apollo Education Group Inc Class A
APOL
| $667K | 0.05% |
83,986
+10,828
| +15% | +$86K |
|
236
Ashland
ASH
$2.51B
| $663K | 0.04% |
11,694
+9,489
| +430% | +$538K |
|
237
Lumen
LUMN
$4.87B
| $660K | 0.04% |
+24,065
| New | +$660K |
|
|
MMP
238
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $655K | 0.04% |
+9,272
| New | +$655K |
|
239
Trimble
TRMB
$19.2B
| $654K | 0.04% |
+22,910
| New | +$654K |
|
|
GAP
240
The Gap, Inc.
GAP
$8.83B
| $653K | 0.04% |
29,399
+5,888
| +25% | +$131K |
|
241
Viatris
VTRS
$12.2B
| $645K | 0.04% |
+16,922
| New | +$645K |
|
|
CPN
242
DELISTED
Calpine Corporation
CPN
| $638K | 0.04% |
+50,547
| New | +$638K |
|
243
Public Storage
PSA
$52.2B
| $637K | 0.04% |
+2,855
| New | +$637K |
|
244
Teleflex
TFX
$5.78B
| $635K | 0.04% |
3,780
+325
| +9% | +$54.6K |
|
245
Teradyne
TER
$19.1B
| $634K | 0.04% |
+29,418
| New | +$634K |
|
|
JOY
246
DELISTED
Joy Global Inc
JOY
| $633K | 0.04% |
+22,848
| New | +$633K |
|
247
Norwegian Cruise Line
NCLH
$11.6B
| $629K | 0.04% |
16,708
+13,631
| +443% | +$513K |
|
|
SWIR
248
DELISTED
Sierra Wireless
SWIR
| $629K | 0.04% |
43,718
+7,203
| +20% | +$104K |
|
|
WEB
249
DELISTED
Web.com Group, Inc.
WEB
| $629K | 0.04% |
36,431
+28,455
| +357% | +$491K |
|
250
Cummins
CMI
$55.1B
| $628K | 0.04% |
4,901
-11,071
| -69% | -$1.42M |
|