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 |
Alphabet (Google) Class C
GOOG
|
+$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 4 |
Alibaba
BABA
|
+$9.66M |
| 5 |
Intel
INTC
|
+$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.8M |
| 2 |
Gilead Sciences
GILD
|
+$31.2M |
| 3 |
Booking.com
BKNG
|
+$29M |
| 4 |
Amazon
AMZN
|
+$25.6M |
| 5 |
Baidu
BIDU
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MWW
701
DELISTED
Monster Worldwide Inc
MWW
| $73K | 0.01% |
11,604
+8,614
| +288% | +$54.2K |
|
702
El Pollo Loco
LOCO
$303M
| $72K | 0.01% |
+2,815
| New | +$72K |
|
703
Lands' End
LE
$454M
| $71K | 0.01% |
1,996
+395
| +25% | +$14.1K |
|
704
WisdomTree
WT
$2.02B
| $71K | 0.01% |
3,342
-676
| -17% | -$14.4K |
|
|
RSPP
705
DELISTED
RSP Permian, Inc.
RSPP
| $71K | 0.01% |
2,851
+1,801
| +172% | +$44.9K |
|
706
Leidos
LDOS
$23.1B
| $70K | 0.01% |
+1,681
| New | +$70K |
|
|
MJN
707
DELISTED
Mead Johnson Nutrition Company
MJN
| $70K | 0.01% |
699
-499
| -42% | -$50K |
|
|
ARG
708
DELISTED
AIRGAS INC
ARG
| $70K | 0.01% |
+667
| New | +$70K |
|
|
LF
709
DELISTED
LEAPFROG ENTERPRISES INC.
LF
| $70K | 0.01% |
32,305
+26,011
| +413% | +$56.4K |
|
|
HIBB
710
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $70K | 0.01% |
+1,444
| New | +$70K |
|
711
CEVA Inc
CEVA
$549M
| $68K | 0.01% |
3,216
+515
| +19% | +$10.9K |
|
|
JNPR
712
DELISTED
Juniper Networks
JNPR
| $68K | 0.01% |
+3,024
| New | +$68K |
|
713
Pembina Pipeline
PBA
$22.5B
| $68K | 0.01% |
2,152
+1,241
| +136% | +$39.2K |
|
714
Franklin Resources
BEN
$12.6B
| $67K | 0.01% |
+1,310
| New | +$67K |
|
715
Cleveland-Cliffs
CLF
$5.62B
| $67K | 0.01% |
+13,944
| New | +$67K |
|
716
Direxion Daily Mid Cap Bull 3X Shares
MIDU
$76.7M
| $67K | 0.01% |
+3,005
| New | +$67K |
|
717
Valero Energy
VLO
$49.2B
| $67K | 0.01% |
+1,064
| New | +$67K |
|
|
RENT
718
DELISTED
RENTRAK CORP
RENT
| $67K | 0.01% |
1,212
-2,666
| -69% | -$147K |
|
719
ProShares Ultra Bloomberg Natural Gas
BOIL
$128M
| – | – |
0
| – | – |
|
720
Deutsche Bank
DB
$69.7B
| $66K | 0.01% |
+2,149
| New | +$66K |
|
721
Eversource Energy
ES
$23.8B
| $66K | 0.01% |
+1,309
| New | +$66K |
|
722
Korn Ferry
KFY
$3.81B
| $66K | 0.01% |
+2,029
| New | +$66K |
|
723
Invesco Solar ETF
TAN
$728M
| $66K | 0.01% |
1,500
-1,137
| -43% | -$50K |
|
|
ECYT
724
DELISTED
Endocyte, Inc. Common Stock
ECYT
| $66K | 0.01% |
10,629
+4,684
| +79% | +$29.1K |
|
|
CAA
725
DELISTED
CalAtlantic Group, Inc.
CAA
| $66K | 0.01% |
1,482
+372
| +34% | +$16.6K |
|