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 |
NVIDIA
NVDA
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
976
WisdomTree Japan Hedged Equity Fund
DXJ
$3.84B
| $173K | ﹤0.01% |
+1,517
| New | +$173K |
|
|
BZUN
977
Baozun
BZUN
$260M
| $172K | ﹤0.01% |
69,113
+23,978
| +53% | +$59.7K |
|
978
Intapp
INTA
$3.72B
| $172K | ﹤0.01% |
3,334
+148
| +5% | +$7.64K |
|
979
Louisiana-Pacific
LPX
$6.77B
| $172K | ﹤0.01% |
2,001
-488
| -20% | -$41.9K |
|
980
SpartanNash
SPTN
$898M
| $172K | ﹤0.01% |
6,524
+286
| +5% | +$7.54K |
|
981
PACS Group
PACS
$1.51B
| $172K | ﹤0.01% |
13,332
+13,178
| +8,557% | +$170K |
|
982
Adtalem Global Education
ATGE
$4.93B
| $171K | ﹤0.01% |
+1,347
| New | +$171K |
|
983
iShares US Broker-Dealers & Securities Exchanges ETF
IAI
$1.56B
| $171K | ﹤0.01% |
+1,012
| New | +$171K |
|
984
Playtika
PLTK
$1.38B
| $171K | ﹤0.01% |
36,165
+4,222
| +13% | +$20K |
|
985
Spectrum Brands
SPB
$1.33B
| $171K | ﹤0.01% |
3,243
-1,051
| -24% | -$55.4K |
|
986
Aquestive Therapeutics
AQST
$595M
| $170K | ﹤0.01% |
+51,546
| New | +$170K |
|
987
AptarGroup
ATR
$8.99B
| $170K | ﹤0.01% |
1,087
+863
| +385% | +$135K |
|
|
ALTS
988
ALT5 Sigma Corporation Common Stock
ALTS
$497M
| $170K | ﹤0.01% |
23,537
+4,926
| +26% | +$35.6K |
|
989
Innovative Solutions & Support
ISSC
$200M
| $169K | ﹤0.01% |
12,226
+10,229
| +512% | +$141K |
|
|
JMIA
990
Jumia Technologies
JMIA
$1.18B
| $169K | ﹤0.01% |
42,188
-16,741
| -28% | -$67.1K |
|
|
TSPY
991
TappAlpha SPY Growth & Daily Income ETF
TSPY
$70.7M
| $169K | ﹤0.01% |
+6,935
| New | +$169K |
|
992
Applied Industrial Technologies
AIT
$10.1B
| $168K | ﹤0.01% |
725
-145
| -17% | -$33.6K |
|
|
CIM
993
Chimera Investment
CIM
$1.17B
| $168K | ﹤0.01% |
12,146
-31,411
| -72% | -$434K |
|
994
NeoGenomics
NEO
$1.08B
| $168K | ﹤0.01% |
23,076
+17,524
| +316% | +$128K |
|
995
TriplePoint Venture Growth BDC
TPVG
$271M
| $168K | ﹤0.01% |
+24,032
| New | +$168K |
|
996
Upexi
UPXI
$330M
| $168K | ﹤0.01% |
+56,532
| New | +$168K |
|
|
SMCX
997
Defiance Daily Target 2X Long SMCI ETF
SMCX
$286M
| $168K | ﹤0.01% |
3,414
+1,252
| +58% | +$61.6K |
|
998
Vivid Seats
SEAT
$112M
| $166K | ﹤0.01% |
4,934
-8,849
| -64% | -$298K |
|
999
ANI Pharmaceuticals
ANIP
$2.12B
| $165K | ﹤0.01% |
2,539
-50
| -2% | -$3.25K |
|
1000
ImmunityBio
IBRX
$2.44B
| $165K | ﹤0.01% |
+62,775
| New | +$165K |
|