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 |
Broadcom
AVGO
|
+$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 4 |
Walt Disney
DIS
|
+$14.5M |
| 5 |
Alibaba
BABA
|
+$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Alaska Air
ALK
$7.34B
| $357K | 0.03% |
4,356
+3,371
| +342% | +$276K |
|
302
Vanguard Growth ETF
VUG
$188B
| $350K | 0.03% |
+3,294
| New | +$350K |
|
303
Waters Corp
WAT
$18.4B
| $350K | 0.03% |
2,654
+2,134
| +410% | +$281K |
|
304
First Solar
FSLR
$21.8B
| $349K | 0.03% |
+5,101
| New | +$349K |
|
|
PTLA
305
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
| $348K | 0.03% |
17,077
+9,979
| +141% | +$203K |
|
306
Prospect Capital
PSEC
$1.33B
| $346K | 0.03% |
+47,679
| New | +$346K |
|
307
Omnicom Group
OMC
$15.3B
| $343K | 0.03% |
+4,132
| New | +$343K |
|
308
IPG Photonics
IPGP
$3.5B
| $337K | 0.03% |
+3,514
| New | +$337K |
|
|
CHL
309
DELISTED
China Mobile Limited
CHL
| $337K | 0.03% |
+6,090
| New | +$337K |
|
310
Newell Brands
NWL
$2.65B
| $334K | 0.03% |
+7,556
| New | +$334K |
|
311
Marvell Technology
MRVL
$57.6B
| $333K | 0.03% |
32,299
+29,815
| +1,200% | +$307K |
|
|
ALDR
312
DELISTED
Alder Biopharmaceuticals, Inc.
ALDR
| $332K | 0.03% |
13,564
+10,404
| +329% | +$255K |
|
|
RAX
313
DELISTED
Rackspace Hosting Inc
RAX
| $330K | 0.03% |
+15,308
| New | +$330K |
|
|
CRZO
314
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $329K | 0.03% |
+10,667
| New | +$329K |
|
315
ProShares Ultra Bloomberg Natural Gas
BOIL
$132M
| $328K | 0.03% |
+6
| New | +$328K |
|
316
ProShares Short QQQ
PSQ
$542M
| $328K | 0.03% |
1,249
-422
| -25% | -$111K |
|
317
TE Connectivity
TEL
$61.4B
| $326K | 0.03% |
5,268
+4,999
| +1,858% | +$309K |
|
|
WNR
318
DELISTED
Western Refining Inc
WNR
| $326K | 0.03% |
+11,236
| New | +$326K |
|
319
Pembina Pipeline
PBA
$22.1B
| $323K | 0.03% |
+11,999
| New | +$323K |
|
320
Invesco CurrencyShares Japanese Yen Trust
FXY
$562M
| $322K | 0.03% |
3,750
+684
| +22% | +$58.7K |
|
321
Hyatt Hotels
H
$13.9B
| $322K | 0.03% |
+6,517
| New | +$322K |
|
|
BIG
322
DELISTED
Big Lots, Inc.
BIG
| $322K | 0.03% |
7,123
+1,103
| +18% | +$49.9K |
|
323
Howard Hughes
HHH
$4.69B
| $316K | 0.03% |
3,132
+1,057
| +51% | +$107K |
|
324
KLA
KLAC
$121B
| $315K | 0.03% |
+4,330
| New | +$315K |
|
|
DF
325
DELISTED
Dean Foods Company
DF
| $314K | 0.03% |
18,172
+2,482
| +16% | +$42.9K |
|