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 |
Apple
AAPL
|
+$32.1M |
| 2 |
Bausch Health
BHC
|
+$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 5 |
Amazon
AMZN
|
+$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
FINL
726
DELISTED
Finish Line
FINL
| $91K | 0.01% |
5,066
+2,786
| +122% | +$50K |
|
|
GG
727
DELISTED
Goldcorp Inc
GG
| $91K | 0.01% |
+7,898
| New | +$91K |
|
728
Match Group
MTCH
$9.04B
| $90K | 0.01% |
+6,652
| New | +$90K |
|
729
Sealed Air
SEE
$4.97B
| $90K | 0.01% |
2,036
-3,675
| -64% | -$162K |
|
730
BlackBerry
BB
$2.38B
| $89K | 0.01% |
9,639
-34,561
| -78% | -$319K |
|
731
Monolithic Power Systems
MPWR
$42B
| $89K | 0.01% |
1,412
+539
| +62% | +$34K |
|
732
Super Micro Computer
SMCI
$26.7B
| $89K | 0.01% |
36,400
-116,070
| -76% | -$284K |
|
|
OSIR
733
DELISTED
Osiris Therapeutics, Inc. Common Stock
OSIR
| $89K | 0.01% |
8,638
+6,907
| +399% | +$71.2K |
|
734
Boyd Gaming
BYD
$6.64B
| $88K | 0.01% |
+4,461
| New | +$88K |
|
735
Landstar System
LSTR
$4.35B
| $88K | 0.01% |
1,505
-2,275
| -60% | -$133K |
|
736
Suburban Propane Partners
SPH
$1.23B
| $88K | 0.01% |
3,659
-3,853
| -51% | -$92.7K |
|
737
ProShares Ultra Materials
UYM
$34.5M
| $88K | 0.01% |
9,792
-4,332
| -31% | -$38.9K |
|
|
XONE
738
DELISTED
The ExOne Company
XONE
| $88K | 0.01% |
8,811
+7,872
| +838% | +$78.6K |
|
|
FPRX
739
DELISTED
Five Prime Therapeutics, Inc.
FPRX
| $88K | 0.01% |
2,133
-300
| -12% | -$12.4K |
|
740
Angi Inc
ANGI
$786M
| $87K | 0.01% |
935
+583
| +166% | +$54.2K |
|
741
Build-A-Bear
BBW
$940M
| $87K | 0.01% |
+7,148
| New | +$87K |
|
742
Semtech
SMTC
$5.4B
| $87K | 0.01% |
4,617
+3,434
| +290% | +$64.7K |
|
743
Sony
SONY
$174B
| $87K | 0.01% |
+17,740
| New | +$87K |
|
744
Seagate
STX
$45.4B
| $87K | 0.01% |
2,394
-8,618
| -78% | -$313K |
|
|
BPT
745
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $86K | 0.01% |
3,453
+1,424
| +70% | +$35.5K |
|
746
JetBlue
JBLU
$1.84B
| $86K | 0.01% |
+3,808
| New | +$86K |
|
747
ProShares UltraPro Dow 30
UDOW
$732M
| $86K | 0.01% |
5,392
-2,680
| -33% | -$42.7K |
|
|
WLL
748
DELISTED
Whiting Petroleum Corporation
WLL
| $86K | 0.01% |
30
-78
| -72% | -$224K |
|
|
AMED
749
DELISTED
Amedisys
AMED
| $85K | 0.01% |
2,170
-567
| -21% | -$22.2K |
|
750
Macy's
M
$4.67B
| $85K | 0.01% |
+2,432
| New | +$85K |
|