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 | |
|---|---|---|---|---|---|---|
701
iShares 10-20 Year Treasury Bond ETF
TLH
$11.5B
| $268K | ﹤0.01% |
2,346
+1,693
| +259% | +$193K |
|
702
Archer Aviation
ACHR
$5.47B
| $267K | ﹤0.01% |
93,527
+52,307
| +127% | +$149K |
|
703
Zillow
Z
$21.1B
| $266K | ﹤0.01% |
5,999
| – | – |
|
704
United States Copper Index Fund
CPER
$220M
| $265K | ﹤0.01% |
10,635
-17,423
| -62% | -$434K |
|
|
EH
705
EHang Holdings
EH
$1.15B
| $264K | ﹤0.01% |
24,230
-29,721
| -55% | -$324K |
|
706
Digital Turbine
APPS
$478M
| $262K | ﹤0.01% |
21,222
+3,632
| +21% | +$44.8K |
|
707
Immersion
IMMR
$223M
| $260K | ﹤0.01% |
29,152
+15,338
| +111% | +$137K |
|
708
Vanguard Utilities ETF
VPU
$7.25B
| $260K | ﹤0.01% |
1,769
+1,277
| +260% | +$188K |
|
709
Kyndryl
KD
$7.63B
| $258K | ﹤0.01% |
17,484
-57,969
| -77% | -$855K |
|
710
NextDecade
NEXT
$2.14B
| $258K | ﹤0.01% |
51,943
+43,406
| +508% | +$216K |
|
711
LendingClub
LC
$1.89B
| $257K | ﹤0.01% |
35,763
-24,705
| -41% | -$178K |
|
712
PennyMac Financial
PFSI
$6.3B
| $257K | ﹤0.01% |
+4,324
| New | +$257K |
|
713
Urban One Class A
UONE
$69M
| $257K | ﹤0.01% |
34,078
+31,336
| +1,143% | +$236K |
|
714
TopBuild
BLD
$11.8B
| $256K | ﹤0.01% |
1,233
+1,127
| +1,063% | +$234K |
|
715
W&T Offshore
WTI
$257M
| $256K | ﹤0.01% |
+50,586
| New | +$256K |
|
716
Vanguard S&P Small-Cap 600 ETF
VIOO
$3.02B
| $255K | ﹤0.01% |
2,872
+674
| +31% | +$59.8K |
|
|
PRFT
717
DELISTED
Perficient Inc
PRFT
| $254K | ﹤0.01% |
+3,527
| New | +$254K |
|
718
ProShares UltraShort Bloomberg Crude Oil
SCO
$123M
| $253K | ﹤0.01% |
+10,063
| New | +$253K |
|
719
Celanese
CE
$4.91B
| $252K | ﹤0.01% |
+2,317
| New | +$252K |
|
720
DocGo
DCGO
$155M
| $252K | ﹤0.01% |
29,242
-16,187
| -36% | -$139K |
|
721
Eagle Materials
EXP
$7.48B
| $251K | ﹤0.01% |
+1,713
| New | +$251K |
|
722
Lear
LEA
$5.79B
| $251K | ﹤0.01% |
+1,803
| New | +$251K |
|
723
Mid-America Apartment Communities
MAA
$16.8B
| $250K | ﹤0.01% |
1,661
+1,102
| +197% | +$166K |
|
724
Perma-Fix Environmental Services
PESI
$181M
| $250K | ﹤0.01% |
+21,246
| New | +$250K |
|
725
The Beauty Health Co
SKIN
$288M
| $250K | ﹤0.01% |
19,865
-8,213
| -29% | -$103K |
|