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 | |
|---|---|---|---|---|---|---|
701
ProShares Ultra Bloomberg Crude Oil
UCO
$351M
| $116K | 0.01% |
+899
| New | +$116K |
|
|
IPHI
702
DELISTED
INPHI CORPORATION
IPHI
| $116K | 0.01% |
2,672
-9,741
| -78% | -$423K |
|
703
Editas Medicine
EDIT
$251M
| $115K | 0.01% |
+8,586
| New | +$115K |
|
|
ORBK
704
DELISTED
Orbotech Ltd
ORBK
| $115K | 0.01% |
+3,892
| New | +$115K |
|
705
Invesco DB Commodity Index Tracking Fund
DBC
$1.27B
| $114K | 0.01% |
+7,654
| New | +$114K |
|
706
OneSpan
OSPN
$598M
| $114K | 0.01% |
6,477
+5,561
| +607% | +$97.9K |
|
707
Gogo Inc
GOGO
$1.44B
| $113K | 0.01% |
10,295
-29,638
| -74% | -$325K |
|
708
Dorian LPG
LPG
$1.35B
| $113K | 0.01% |
+18,981
| New | +$113K |
|
|
EPIQ
709
DELISTED
EPIQ SYSTEMS INC
EPIQ
| $113K | 0.01% |
6,887
-1,862
| -21% | -$30.6K |
|
710
Cleveland-Cliffs
CLF
$5.35B
| $111K | 0.01% |
+18,989
| New | +$111K |
|
711
Synchronoss Technologies
SNCR
$65.2M
| $111K | 0.01% |
302
+171
| +131% | +$62.9K |
|
712
Arrowhead Research
ARWR
$3.76B
| $110K | 0.01% |
15,003
+9,261
| +161% | +$67.9K |
|
713
Regions Financial
RF
$24.1B
| $110K | 0.01% |
11,150
+606
| +6% | +$5.98K |
|
714
Rambus
RMBS
$8.02B
| $110K | 0.01% |
8,809
+1,970
| +29% | +$24.6K |
|
|
SPN
715
DELISTED
Superior Energy Services, Inc.
SPN
| $110K | 0.01% |
6,148
-2,157
| -26% | -$38.6K |
|
716
ProShares Ultra Gold
UGL
$738M
| $109K | 0.01% |
9,924
-21,576
| -68% | -$237K |
|
717
Vanguard FTSE Europe ETF
VGK
$27B
| $109K | 0.01% |
2,238
-13,586
| -86% | -$662K |
|
718
SPDR S&P Oil & Gas Equipment & Services ETF
XES
$153M
| $109K | 0.01% |
576
+334
| +138% | +$63.2K |
|
719
iShares TIPS Bond ETF
TIP
$14B
| $108K | 0.01% |
934
-5,409
| -85% | -$625K |
|
720
Entergy
ETR
$38.8B
| $107K | 0.01% |
2,808
-8,676
| -76% | -$331K |
|
721
Logitech
LOGI
$16B
| $107K | 0.01% |
+4,779
| New | +$107K |
|
722
Take-Two Interactive
TTWO
$45.9B
| $107K | 0.01% |
+2,377
| New | +$107K |
|
|
MDRX
723
DELISTED
Veradigm Inc. Common Stock
MDRX
| $107K | 0.01% |
+8,128
| New | +$107K |
|
724
Invesco India ETF
PIN
$210M
| $106K | 0.01% |
5,131
+2,896
| +130% | +$59.8K |
|
|
TUBE
725
DELISTED
TubeMogul, Inc.
TUBE
| $106K | 0.01% |
11,353
+6,780
| +148% | +$63.3K |
|