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
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
Yext
YEXT
$1.05B
| $132K | ﹤0.01% |
13,801
+7,522
| +120% | +$71.9K |
|
927
AirSculpt Technologies
AIRS
$381M
| $131K | ﹤0.01% |
+26,178
| New | +$131K |
|
|
GAZ
928
DELISTED
iPath Series B Bloomberg Natural Gas Total Return Sub-Index ETN
GAZ
| $131K | ﹤0.01% |
12,066
+11,984
| +14,615% | +$130K |
|
929
Sonder
SOND
$21.6M
| $130K | ﹤0.01% |
8,632
+3,836
| +80% | +$57.8K |
|
930
ProShares Ultra Semiconductors
USD
$1.49B
| $130K | ﹤0.01% |
+9,016
| New | +$130K |
|
931
Banco Santander
SAN
$148B
| $129K | ﹤0.01% |
35,195
-338,290
| -91% | -$1.24M |
|
932
Veritone
VERI
$201M
| $129K | ﹤0.01% |
22,236
+14,813
| +200% | +$85.9K |
|
933
EXL Service
EXLS
$6.9B
| $128K | ﹤0.01% |
3,960
+3,020
| +321% | +$97.6K |
|
934
Navitas Semiconductor
NVTS
$1.2B
| $128K | ﹤0.01% |
17,595
+11,851
| +206% | +$86.2K |
|
935
Voyager Therapeutics
VYGR
$231M
| $128K | ﹤0.01% |
+16,623
| New | +$128K |
|
936
VanEck Brazil Small-Cap ETF
BRF
$21.4M
| $127K | ﹤0.01% |
9,498
+882
| +10% | +$11.8K |
|
937
First Trust Dow Jones Internet Index Fund ETF
FDN
$7.91B
| $127K | ﹤0.01% |
859
-1,338
| -61% | -$198K |
|
938
Lightwave Logic
LWLG
$393M
| $127K | ﹤0.01% |
24,337
+9,120
| +60% | +$47.6K |
|
939
Powell Industries
POWL
$3.34B
| $127K | ﹤0.01% |
2,989
-646
| -18% | -$27.4K |
|
940
GDS Holdings
GDS
$6.42B
| $126K | ﹤0.01% |
6,801
+4,259
| +168% | +$78.9K |
|
941
HDFC Bank
HDB
$180B
| $125K | ﹤0.01% |
+1,881
| New | +$125K |
|
|
NAAS
942
NaaS Technology Inc
NAAS
$7.08M
| $125K | ﹤0.01% |
+37
| New | +$125K |
|
|
SYNH
943
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $125K | ﹤0.01% |
3,537
-49,327
| -93% | -$1.74M |
|
|
CONX
944
DELISTED
CONX Corp. Class A Common Stock
CONX
| $124K | ﹤0.01% |
12,161
+12,160
| +1,216,000% | +$124K |
|
|
ALTU
945
DELISTED
Altitude Acquisition Corp. Class A Common Stock
ALTU
| $124K | ﹤0.01% |
12,248
-2,619
| -18% | -$26.5K |
|
946
Caleres
CAL
$527M
| $123K | ﹤0.01% |
5,719
+4,869
| +573% | +$105K |
|
947
Liberty Media Series C
FWONK
$24.7B
| $123K | ﹤0.01% |
+1,709
| New | +$123K |
|
948
Open Lending Corp
LPRO
$253M
| $123K | ﹤0.01% |
+17,503
| New | +$123K |
|
|
SUP
949
DELISTED
Superior Industries International
SUP
| $123K | ﹤0.01% |
24,971
+5,224
| +26% | +$25.7K |
|
|
SGEN
950
DELISTED
Seagen Inc. Common Stock
SGEN
| $123K | ﹤0.01% |
608
-3,678
| -86% | -$744K |
|