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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1251
Reinsurance Group of America
RGA
$12.7B
| $59K | ﹤0.01% |
+304
| New | +$59K |
|
1252
Zebra Technologies
ZBRA
$15.9B
| $59K | ﹤0.01% |
210
+74
| +54% | +$20.8K |
|
1253
Eton Pharmaceutcials
ETON
$473M
| $58K | ﹤0.01% |
4,472
-31,904
| -88% | -$414K |
|
1254
Enpro
NPO
$4.64B
| $58K | ﹤0.01% |
364
-4,764
| -93% | -$759K |
|
1255
Sprout Social
SPT
$803M
| $58K | ﹤0.01% |
2,647
-611
| -19% | -$13.4K |
|
1256
Xperi
XPER
$279M
| $58K | ﹤0.01% |
+7,601
| New | +$58K |
|
1257
Backblaze
BLZE
$534M
| $57K | ﹤0.01% |
+11,911
| New | +$57K |
|
1258
GrafTech
EAF
$261M
| $57K | ﹤0.01% |
+6,581
| New | +$57K |
|
|
NIU
1259
Niu Technologies
NIU
$316M
| $57K | ﹤0.01% |
13,977
+13,028
| +1,373% | +$53.1K |
|
1260
iShares MSCI India Small-Cap ETF
SMIN
$921M
| $57K | ﹤0.01% |
841
+81
| +11% | +$5.49K |
|
|
VERV
1261
DELISTED
Verve Therapeutics
VERV
| $57K | ﹤0.01% |
12,580
+10,349
| +464% | +$46.9K |
|
|
YRD
1262
Yiren Digital
YRD
$518M
| $57K | ﹤0.01% |
+8,290
| New | +$57K |
|
1263
Oportun Financial
OPRT
$293M
| $56K | ﹤0.01% |
10,304
+7,446
| +261% | +$40.5K |
|
1264
OraSure Technologies
OSUR
$242M
| $56K | ﹤0.01% |
16,622
+14,440
| +662% | +$48.6K |
|
1265
Invesco Aerospace & Defense ETF
PPA
$6.29B
| $56K | ﹤0.01% |
+484
| New | +$56K |
|
1266
Select Medical
SEM
$1.55B
| $56K | ﹤0.01% |
3,387
-1,639
| -33% | -$27.1K |
|
1267
Teucrium Sugar Fund
CANE
$12.5M
| $55K | ﹤0.01% |
+4,561
| New | +$55K |
|
1268
Outset Medical
OM
$243M
| $55K | ﹤0.01% |
5,043
+1,254
| +33% | +$13.7K |
|
1269
Replimune Group
REPL
$447M
| $55K | ﹤0.01% |
+5,646
| New | +$55K |
|
1270
Teucrium Soybean Fund
SOYB
$25.7M
| $55K | ﹤0.01% |
2,580
+1,878
| +268% | +$40K |
|
|
ML
1271
DELISTED
MoneyLion Inc.
ML
| $55K | ﹤0.01% |
+641
| New | +$55K |
|
1272
Aurinia Pharmaceuticals
AUPH
$1.68B
| $54K | ﹤0.01% |
6,799
-44,196
| -87% | -$351K |
|
1273
Clean Energy Fuels
CLNE
$526M
| $54K | ﹤0.01% |
34,995
-90,126
| -72% | -$139K |
|
1274
Cellectar Biosciences
CLRB
$16.2M
| $54K | ﹤0.01% |
5,771
+4,413
| +325% | +$41.3K |
|
1275
iShares 25+ Year Treasury STRIPS Bond ETF
GOVZ
$303M
| $54K | ﹤0.01% |
5,282
+4,561
| +633% | +$46.6K |
|