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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
901
Hexcel
HXL
$4.93B
| $240K | ﹤0.01% |
3,263
+1,562
| +92% | +$115K |
|
902
Jones Lang LaSalle
JLL
$14.8B
| $238K | ﹤0.01% |
1,261
-165
| -12% | -$31.1K |
|
903
Newell Brands
NWL
$2.48B
| $238K | ﹤0.01% |
+27,519
| New | +$238K |
|
904
Post Holdings
POST
$5.7B
| $238K | ﹤0.01% |
2,707
-6,901
| -72% | -$607K |
|
|
SMAR
905
DELISTED
Smartsheet Inc.
SMAR
| $238K | ﹤0.01% |
4,984
+3,696
| +287% | +$176K |
|
906
iShares US Regional Banks ETF
IAT
$651M
| $236K | ﹤0.01% |
5,664
-7,939
| -58% | -$331K |
|
907
Banco Santander
SAN
$149B
| $235K | ﹤0.01% |
56,818
-3,434
| -6% | -$14.2K |
|
908
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.18B
| $233K | ﹤0.01% |
4,012
+2,612
| +187% | +$152K |
|
909
Enova International
ENVA
$2.88B
| $232K | ﹤0.01% |
4,199
+4,145
| +7,676% | +$229K |
|
910
Getty Images
GETY
$809M
| $232K | ﹤0.01% |
+44,370
| New | +$232K |
|
911
Reviva Pharmaceuticals
RVPH
$30.1M
| $232K | ﹤0.01% |
45,212
+4,012
| +10% | +$20.6K |
|
912
Resideo Technologies
REZI
$5.66B
| $231K | ﹤0.01% |
12,297
+10,436
| +561% | +$196K |
|
913
Relmada Therapeutics
RLMD
$52.8M
| $231K | ﹤0.01% |
55,985
+17,664
| +46% | +$72.9K |
|
914
Zumiez
ZUMZ
$347M
| $230K | ﹤0.01% |
11,341
+4,063
| +56% | +$82.4K |
|
915
Bakkt Holdings
BKKT
$152M
| $229K | ﹤0.01% |
4,113
+3,127
| +317% | +$174K |
|
916
Lightwave Logic
LWLG
$417M
| $229K | ﹤0.01% |
46,058
+28,487
| +162% | +$142K |
|
917
Veracyte
VCYT
$2.43B
| $229K | ﹤0.01% |
8,353
+4,676
| +127% | +$128K |
|
918
MeiraGTx Holdings
MGTX
$612M
| $227K | ﹤0.01% |
+32,414
| New | +$227K |
|
919
iShares MSCI USA Momentum Factor ETF
MTUM
$18.8B
| $227K | ﹤0.01% |
+1,447
| New | +$227K |
|
|
STKL
920
SunOpta
STKL
$740M
| $227K | ﹤0.01% |
41,659
+33,711
| +424% | +$184K |
|
|
VTNR
921
DELISTED
Vertex Energy, Inc
VTNR
| $227K | ﹤0.01% |
67,224
-42,459
| -39% | -$143K |
|
922
Avery Dennison
AVY
$12.9B
| $225K | ﹤0.01% |
+1,113
| New | +$225K |
|
923
Euronet Worldwide
EEFT
$3.6B
| $225K | ﹤0.01% |
2,226
+2,159
| +3,222% | +$218K |
|
924
4D Molecular Therapeutics
FDMT
$318M
| $225K | ﹤0.01% |
11,110
+10,844
| +4,077% | +$220K |
|
925
CGI
GIB
$20.8B
| $224K | ﹤0.01% |
2,097
+1,487
| +244% | +$159K |
|