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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TAST
826
DELISTED
Carrols Restaurant Group, Inc.
TAST
| $134K | 0.01% |
9,493
+6,557
| +223% | +$92.6K |
|
|
RPXC
827
DELISTED
RPX Corporation
RPXC
| $134K | 0.01% |
11,214
+8,647
| +337% | +$103K |
|
|
OSIR
828
DELISTED
Osiris Therapeutics, Inc. Common Stock
OSIR
| $134K | 0.01% |
+27,970
| New | +$134K |
|
829
Compass Minerals
CMP
$759M
| $133K | 0.01% |
1,964
+1,415
| +258% | +$95.8K |
|
830
Enovis
ENOV
$1.9B
| $133K | 0.01% |
+1,983
| New | +$133K |
|
831
OneMain Financial
OMF
$7.19B
| $133K | 0.01% |
5,379
+4,606
| +596% | +$114K |
|
832
Flowserve
FLS
$7.36B
| $132K | 0.01% |
+2,742
| New | +$132K |
|
833
Repligen
RGEN
$6.72B
| $132K | 0.01% |
+3,777
| New | +$132K |
|
834
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$423M
| $131K | 0.01% |
+290
| New | +$131K |
|
835
USA Compression Partners
USAC
$3B
| $131K | 0.01% |
7,792
-4,111
| -35% | -$69.1K |
|
836
WEC Energy
WEC
$35.2B
| $131K | 0.01% |
2,161
+1,282
| +146% | +$77.7K |
|
|
STOR
837
DELISTED
STORE Capital Corporation
STOR
| $131K | 0.01% |
5,512
+5,368
| +3,728% | +$128K |
|
|
QIWI
838
DELISTED
QIWI PLC
QIWI
| $131K | 0.01% |
7,680
+3,575
| +87% | +$61K |
|
839
Nova
NVMI
$8.79B
| $130K | 0.01% |
7,033
+5,151
| +274% | +$95.2K |
|
|
GGP
840
DELISTED
GGP Inc.
GGP
| $129K | 0.01% |
5,595
-18,534
| -77% | -$427K |
|
841
American Eagle Outfitters
AEO
$3.44B
| $128K | 0.01% |
+9,154
| New | +$128K |
|
842
Analog Devices
ADI
$121B
| $127K | 0.01% |
+1,557
| New | +$127K |
|
843
National CineMedia
NCMI
$445M
| $127K | 0.01% |
+1,012
| New | +$127K |
|
844
Fortinet
FTNT
$61.5B
| $126K | 0.01% |
16,555
-10,365
| -39% | -$78.9K |
|
845
AllianceBernstein
AB
$4.22B
| $125K | 0.01% |
+5,478
| New | +$125K |
|
846
Honda
HMC
$44.5B
| $125K | 0.01% |
4,154
+3,369
| +429% | +$101K |
|
|
YRD
847
Yiren Digital
YRD
$510M
| $125K | 0.01% |
4,986
+4,897
| +5,502% | +$123K |
|
|
SALE
848
DELISTED
RetailMeNot, Inc. Series 1
SALE
| $125K | 0.01% |
+15,541
| New | +$125K |
|
|
LFC
849
DELISTED
China Life Insurance Company Ltd.
LFC
| $124K | 0.01% |
8,125
-1,116
| -12% | -$17K |
|
|
MACK
850
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $124K | 0.01% |
5,135
-2,657
| -34% | -$64.2K |
|