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 | |
|---|---|---|---|---|---|---|
251
Franklin Covey
FC
$244M
| $626K | 0.04% |
35,176
+33,057
| +1,560% | +$588K |
|
252
Lockheed Martin
LMT
$108B
| $626K | 0.04% |
2,612
-29,348
| -92% | -$7.03M |
|
253
ProShares VIX Short-Term Futures ETF
VIXY
$85.2M
| $626K | 0.04% |
69
+43
| +165% | +$390K |
|
254
Dell
DELL
$84.4B
| $615K | 0.04% |
+45,898
| New | +$615K |
|
255
Estee Lauder
EL
$32.1B
| $612K | 0.04% |
+6,914
| New | +$612K |
|
256
Silicon Laboratories
SLAB
$4.45B
| $611K | 0.04% |
10,394
+10,212
| +5,611% | +$600K |
|
|
ULTI
257
DELISTED
Ultimate Software Group Inc
ULTI
| $595K | 0.04% |
2,914
+2,473
| +561% | +$505K |
|
258
Alnylam Pharmaceuticals
ALNY
$59.2B
| $593K | 0.04% |
8,756
-5,994
| -41% | -$406K |
|
259
KB Home
KBH
$4.63B
| $589K | 0.04% |
36,556
-4,211
| -10% | -$67.8K |
|
260
MiMedx Group
MDXG
$1.06B
| $587K | 0.04% |
68,416
+5,353
| +8% | +$45.9K |
|
|
BBL
261
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $586K | 0.04% |
19,304
-23,218
| -55% | -$705K |
|
262
Chubb
CB
$111B
| $581K | 0.04% |
+4,625
| New | +$581K |
|
|
SLCA
263
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $580K | 0.04% |
+12,476
| New | +$580K |
|
|
QVCGA
264
QVC Group, Inc. Series A Common Stock
QVCGA
$73.3M
| $577K | 0.04% |
+594
| New | +$577K |
|
|
WR
265
DELISTED
Westar Energy Inc
WR
| $576K | 0.04% |
10,162
-17,177
| -63% | -$974K |
|
266
Garmin
GRMN
$45.7B
| $575K | 0.04% |
+11,970
| New | +$575K |
|
267
Ralph Lauren
RL
$18.9B
| $575K | 0.04% |
+5,688
| New | +$575K |
|
268
United Natural Foods
UNFI
$1.75B
| $570K | 0.04% |
14,247
-25,682
| -64% | -$1.03M |
|
269
JD.com
JD
$44.6B
| $563K | 0.04% |
21,606
-93,002
| -81% | -$2.42M |
|
270
LyondellBasell Industries
LYB
$17.7B
| $561K | 0.04% |
+6,964
| New | +$561K |
|
|
HIBB
271
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $552K | 0.04% |
13,855
+11,999
| +646% | +$478K |
|
272
ProShares UltraPro QQQ
TQQQ
$26.7B
| $537K | 0.04% |
100,344
+99,792
| +18,078% | +$534K |
|
|
ESV
273
DELISTED
Ensco Rowan plc
ESV
| $533K | 0.04% |
15,685
-773
| -5% | -$26.3K |
|
274
G-III Apparel Group
GIII
$1.12B
| $526K | 0.04% |
18,067
+15,844
| +713% | +$461K |
|
275
Deckers Outdoor
DECK
$17.9B
| $525K | 0.04% |
+52,980
| New | +$525K |
|