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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1276
Praxis Precision Medicines
PRAX
$794M
| $64K | ﹤0.01% |
1,561
-1,794
| -53% | -$73.6K |
|
1277
RB Global
RBA
$21.7B
| $64K | ﹤0.01% |
+850
| New | +$64K |
|
1278
YieldMax Ultra Option Income Strategy ETF
ULTY
$3.17B
| $64K | ﹤0.01% |
+4,785
| New | +$64K |
|
|
PYCR
1279
DELISTED
Paycor HCM, Inc. Common Stock
PYCR
| $64K | ﹤0.01% |
5,078
+3,860
| +317% | +$48.6K |
|
1280
Clover Health Investments
CLOV
$1.57B
| $63K | ﹤0.01% |
51,551
+11,210
| +28% | +$13.7K |
|
1281
Genesco
GCO
$358M
| $63K | ﹤0.01% |
+2,438
| New | +$63K |
|
1282
MindMed
MNMD
$718M
| $63K | ﹤0.01% |
8,841
-46,007
| -84% | -$328K |
|
1283
Perma-Fix Environmental Services
PESI
$168M
| $63K | ﹤0.01% |
6,281
+3,615
| +136% | +$36.3K |
|
1284
Stoke Therapeutics
STOK
$1.29B
| $63K | ﹤0.01% |
4,727
+3,571
| +309% | +$47.6K |
|
1285
Arch Capital
ACGL
$34.4B
| $62K | ﹤0.01% |
+616
| New | +$62K |
|
1286
Accel Entertainment
ACEL
$938M
| $62K | ﹤0.01% |
6,045
-488
| -7% | -$5.01K |
|
1287
Federated Hermes
FHI
$4.16B
| $62K | ﹤0.01% |
+1,896
| New | +$62K |
|
1288
Fossil Group
FOSL
$168M
| $62K | ﹤0.01% |
+43,192
| New | +$62K |
|
|
TPIC
1289
DELISTED
TPI Composites
TPIC
| $62K | ﹤0.01% |
15,672
-12,572
| -45% | -$49.7K |
|
1290
Gladstone Capital
GLAD
$525M
| $61K | ﹤0.01% |
2,629
-504
| -16% | -$11.7K |
|
1291
Regenxbio
RGNX
$465M
| $61K | ﹤0.01% |
+5,255
| New | +$61K |
|
1292
SS&C Technologies
SSNC
$21.8B
| $61K | ﹤0.01% |
+980
| New | +$61K |
|
1293
UNIFI
UFI
$82.8M
| $61K | ﹤0.01% |
10,457
+8,121
| +348% | +$47.4K |
|
1294
Verisk Analytics
VRSK
$36.6B
| $61K | ﹤0.01% |
+229
| New | +$61K |
|
1295
YieldMax Universe Fund of Option Income ETFs
YMAX
$1.08B
| $61K | ﹤0.01% |
+3,142
| New | +$61K |
|
|
TELL
1296
DELISTED
Tellurian Inc.
TELL
| $61K | ﹤0.01% |
88,910
-25,758
| -22% | -$17.7K |
|
1297
United States Brent Oil Fund
BNO
$102M
| $60K | ﹤0.01% |
+1,867
| New | +$60K |
|
1298
Prudential
PUK
$35.5B
| $60K | ﹤0.01% |
+3,299
| New | +$60K |
|
1299
The RMR Group
RMR
$288M
| $60K | ﹤0.01% |
2,698
+1,744
| +183% | +$38.8K |
|
1300
Woodside Energy
WDS
$30.5B
| $60K | ﹤0.01% |
+3,220
| New | +$60K |
|