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 | |
|---|---|---|---|---|---|---|
1226
Ryanair
RYAAY
$31.7B
| $12K | ﹤0.01% |
420
-300
| -42% | -$8.57K |
|
|
SMRT
1227
DELISTED
Stein Mart Inc
SMRT
| $12K | ﹤0.01% |
+1,944
| New | +$12K |
|
|
KLXI
1228
DELISTED
KLX Inc.
KLXI
| $12K | ﹤0.01% |
+427
| New | +$12K |
|
|
EVEP
1229
DELISTED
EV Energy Partners, L.P.
EVEP
| $12K | ﹤0.01% |
5,078
-1,814
| -26% | -$4.29K |
|
1230
Ambarella
AMBA
$3.55B
| $11K | ﹤0.01% |
157
-5,768
| -97% | -$404K |
|
1231
Civeo
CVEO
$291M
| $11K | ﹤0.01% |
867
+667
| +334% | +$8.46K |
|
1232
FIVE9
FIVN
$2.02B
| $11K | ﹤0.01% |
749
-3,707
| -83% | -$54.4K |
|
1233
Hercules Capital
HTGC
$3.55B
| $11K | ﹤0.01% |
+847
| New | +$11K |
|
1234
Intrepid Potash
IPI
$388M
| $11K | ﹤0.01% |
1,053
+30
| +3% | +$313 |
|
1235
Natera
NTRA
$23.9B
| $11K | ﹤0.01% |
1,023
+869
| +564% | +$9.34K |
|
1236
Sandstorm Gold
SAND
$3.44B
| $11K | ﹤0.01% |
2,328
-9,830
| -81% | -$46.4K |
|
|
CNH
1237
CNH Industrial
CNH
$14B
| $11K | ﹤0.01% |
+1,857
| New | +$11K |
|
|
EQC
1238
DELISTED
Equity Commonwealth
EQC
| $11K | ﹤0.01% |
378
-1,556
| -80% | -$45.3K |
|
|
KOL
1239
DELISTED
VanEck Vectors Coal ETF
KOL
| $11K | ﹤0.01% |
96
+44
| +85% | +$5.04K |
|
|
INSY
1240
DELISTED
Insys Therapeutics, Inc.
INSY
| $11K | ﹤0.01% |
1,000
-41,884
| -98% | -$461K |
|
|
NSU
1241
DELISTED
Nevsun Resources Ltd.
NSU
| $11K | ﹤0.01% |
3,883
-1,184
| -23% | -$3.35K |
|
|
NADL
1242
DELISTED
North Atlantic Drilling Ltd
NADL
| $11K | ﹤0.01% |
3,646
+3,399
| +1,376% | +$10.3K |
|
|
AIXG
1243
DELISTED
AIXTRON SE
AIXG
| $11K | ﹤0.01% |
+1,867
| New | +$11K |
|
1244
Boot Barn
BOOT
$5.76B
| $10K | ﹤0.01% |
+921
| New | +$10K |
|
|
BPMC
1245
DELISTED
Blueprint Medicines
BPMC
| $10K | ﹤0.01% |
370
+294
| +387% | +$7.95K |
|
1246
Direxion Daily Real Estate Bear 3X Shares
DRV
$40.9M
| $10K | ﹤0.01% |
17
+13
| +325% | +$7.65K |
|
1247
John B. Sanfilippo & Son
JBSS
$745M
| $10K | ﹤0.01% |
+200
| New | +$10K |
|
1248
Kayne Anderson Energy Infrastructure Fund
KYN
$2.06B
| $10K | ﹤0.01% |
+490
| New | +$10K |
|
1249
LXP Industrial Trust
LXP
$2.74B
| $10K | ﹤0.01% |
+1,044
| New | +$10K |
|
1250
Magnachip Semiconductor
MX
$110M
| $10K | ﹤0.01% |
1,236
+1,096
| +783% | +$8.87K |
|