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 | |
|---|---|---|---|---|---|---|
201
Vanguard Consumer Discretionary ETF
VCR
$6.54B
| $606K | 0.05% |
4,888
+13
| +0.3% | +$1.61K |
|
|
PRTY
202
DELISTED
Party City Holdco Inc.
PRTY
| $606K | 0.05% |
+40,308
| New | +$606K |
|
|
BLT
203
DELISTED
BLOUNT INTERNATIONAL (NEW)
BLT
| $606K | 0.05% |
+60,724
| New | +$606K |
|
|
SOHU
204
Sohu.com
SOHU
$483M
| $592K | 0.05% |
11,950
+4,894
| +69% | +$242K |
|
205
Invesco DB Agriculture Fund
DBA
$807M
| $591K | 0.05% |
28,715
+25,444
| +778% | +$524K |
|
|
SWIR
206
DELISTED
Sierra Wireless
SWIR
| $588K | 0.05% |
40,448
+15,973
| +65% | +$232K |
|
207
Sarepta Therapeutics
SRPT
$1.84B
| $586K | 0.05% |
30,049
+4,273
| +17% | +$83.3K |
|
|
MOMO
208
Hello Group
MOMO
$1.3B
| $584K | 0.05% |
52,024
+23,143
| +80% | +$260K |
|
|
MNDT
209
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $580K | 0.05% |
+32,264
| New | +$580K |
|
|
IOC
210
DELISTED
Interoil Corporation
IOC
| $580K | 0.05% |
18,244
+14,218
| +353% | +$452K |
|
|
JUNO
211
DELISTED
Juno Therapeutics, Inc.
JUNO
| $576K | 0.05% |
+15,125
| New | +$576K |
|
|
YOKU
212
DELISTED
YOUKU TUDOU INC.(CAYMAN ISLS)
YOKU
| $573K | 0.05% |
20,853
+19,075
| +1,073% | +$524K |
|
213
Dynavax Technologies
DVAX
$1.14B
| $566K | 0.05% |
29,447
+11,985
| +69% | +$230K |
|
214
Charles Schwab
SCHW
$170B
| $565K | 0.05% |
20,189
-1,475
| -7% | -$41.3K |
|
215
Timken Company
TKR
$5.37B
| $553K | 0.04% |
16,533
+14,809
| +859% | +$495K |
|
|
CRR
216
DELISTED
Carbo Ceramics Inc.
CRR
| $542K | 0.04% |
38,186
+28,139
| +280% | +$399K |
|
217
Opko Health
OPK
$1.13B
| $535K | 0.04% |
51,496
+51,296
| +25,648% | +$533K |
|
|
EZCH
218
DELISTED
EZCHIP SEMICONDUCTOR LIMITED ORD SHS (IL)
EZCH
| $534K | 0.04% |
20,955
-39,727
| -65% | -$1.01M |
|
219
AbbVie
ABBV
$371B
| $533K | 0.04% |
+9,340
| New | +$533K |
|
|
N
220
DELISTED
Netsuite Inc
N
| $533K | 0.04% |
7,787
+7,376
| +1,795% | +$505K |
|
221
ProShares Ultra Dow30
DDM
$441M
| $531K | 0.04% |
+24,090
| New | +$531K |
|
222
Occidental Petroleum
OXY
$44.7B
| $531K | 0.04% |
+7,764
| New | +$531K |
|
223
Rockwell Automation
ROK
$38.8B
| $530K | 0.04% |
4,661
+2,240
| +93% | +$255K |
|
|
GAS
224
DELISTED
AGL RESOURCES INC (HOLDING CO)
GAS
| $525K | 0.04% |
+8,062
| New | +$525K |
|
225
Air Lease Corp
AL
$7.12B
| $521K | 0.04% |
+16,245
| New | +$521K |
|