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 | |
|---|---|---|---|---|---|---|
|
MESO
1126
Mesoblast
MESO
$1.97B
| $116K | ﹤0.01% |
10,673
-5,393
| -34% | -$58.6K |
|
1127
OptimizeRx
OPRX
$350M
| $116K | ﹤0.01% |
8,598
+2,247
| +35% | +$30.3K |
|
|
XOVR
1128
EntrepreneurShares Series Trust ERShares Private-Public Crossover ETF
XOVR
$489M
| $116K | ﹤0.01% |
+6,115
| New | +$116K |
|
1129
ATS Corp
ATS
$2.66B
| $115K | ﹤0.01% |
+3,630
| New | +$115K |
|
1130
iHeartMedia
IHRT
$356M
| $115K | ﹤0.01% |
65,386
+21,471
| +49% | +$37.8K |
|
1131
GraniteShares 2x Long MSFT Daily ETF
MSFL
$23.8M
| $114K | ﹤0.01% |
3,799
+3,585
| +1,675% | +$108K |
|
1132
eXp World Holdings
EXPI
$1.79B
| $113K | ﹤0.01% |
+12,503
| New | +$113K |
|
1133
Haleon
HLN
$44.2B
| $113K | ﹤0.01% |
+10,913
| New | +$113K |
|
1134
ProShares Supply Chain Logistics ETF
SUPL
$958K
| $113K | ﹤0.01% |
+3,002
| New | +$113K |
|
|
XNET
1135
Xunlei
XNET
$470M
| $113K | ﹤0.01% |
28,001
-40,376
| -59% | -$163K |
|
|
ZEPP
1136
Zepp Health
ZEPP
$719M
| $113K | ﹤0.01% |
42,554
+8,551
| +25% | +$22.7K |
|
1137
Kingstone Companies
KINS
$198M
| $112K | ﹤0.01% |
7,289
+5,897
| +424% | +$90.6K |
|
1138
Petrobras Class A
PBR.A
$75.1B
| $112K | ﹤0.01% |
+9,767
| New | +$112K |
|
1139
Schrodinger
SDGR
$1.38B
| $112K | ﹤0.01% |
+5,594
| New | +$112K |
|
1140
Armstrong World Industries
AWI
$8.61B
| $111K | ﹤0.01% |
687
+362
| +111% | +$58.5K |
|
1141
Breakwave Dry Bulk Shipping ETF
BDRY
$57.2M
| $111K | ﹤0.01% |
20,146
+10,213
| +103% | +$56.3K |
|
1142
scPharmaceuticals
SCPH
$302M
| $111K | ﹤0.01% |
+29,217
| New | +$111K |
|
1143
Sprott Gold Miners ETF
SGDM
$550M
| $111K | ﹤0.01% |
2,460
-232
| -9% | -$10.5K |
|
1144
Timken Company
TKR
$5.51B
| $110K | ﹤0.01% |
1,517
+1,360
| +866% | +$98.6K |
|
1145
Global X Artificial Intelligence & Technology ETF
AIQ
$4.88B
| $109K | ﹤0.01% |
+2,502
| New | +$109K |
|
1146
Digital Turbine
APPS
$494M
| $109K | ﹤0.01% |
18,578
-13,778
| -43% | -$80.8K |
|
1147
MiMedx Group
MDXG
$1.06B
| $109K | ﹤0.01% |
17,957
+11,663
| +185% | +$70.8K |
|
|
SOLT
1148
2x Solana ETF
SOLT
$514M
| $109K | ﹤0.01% |
+6,648
| New | +$109K |
|
1149
BBVA Argentina
BBAR
$1.96B
| $108K | ﹤0.01% |
6,601
+5,801
| +725% | +$94.9K |
|
1150
Microvast
MVST
$916M
| $108K | ﹤0.01% |
29,880
+16,659
| +126% | +$60.2K |
|