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 | |
|---|---|---|---|---|---|---|
1551
RXO
RXO
$2.71B
| $22K | ﹤0.01% |
1,156
-5,778
| -83% | -$110K |
|
1552
Synovus
SNV
$7.18B
| $22K | ﹤0.01% |
491
-25,052
| -98% | -$1.12M |
|
1553
Sonoco
SON
$4.71B
| $22K | ﹤0.01% |
+472
| New | +$22K |
|
1554
Mammoth Energy Services
TUSK
$114M
| $22K | ﹤0.01% |
11,079
+9,774
| +749% | +$19.4K |
|
|
PENG
1555
Penguin Solutions, Inc. Ordinary Shares
PENG
$1.36B
| $22K | ﹤0.01% |
+1,276
| New | +$22K |
|
1556
VanEck Fallen Angel High Yield Bond ETF
ANGL
$3.06B
| $21K | ﹤0.01% |
+738
| New | +$21K |
|
|
CIO
1557
City Office REIT
CIO
$280M
| $21K | ﹤0.01% |
4,176
-3,818
| -48% | -$19.2K |
|
1558
CytomX Therapeutics
CTMX
$330M
| $21K | ﹤0.01% |
33,853
+33,346
| +6,577% | +$20.7K |
|
1559
Covenant Logistics
CVLG
$576M
| $21K | ﹤0.01% |
+968
| New | +$21K |
|
1560
H.B. Fuller
FUL
$3.33B
| $21K | ﹤0.01% |
+375
| New | +$21K |
|
1561
Gran Tierra Energy
GTE
$136M
| $21K | ﹤0.01% |
4,379
-22,103
| -83% | -$106K |
|
1562
Olo Inc
OLO
$1.74B
| $21K | ﹤0.01% |
3,519
-9,992
| -74% | -$59.6K |
|
|
SAGE
1563
DELISTED
Sage Therapeutics
SAGE
| $21K | ﹤0.01% |
+2,647
| New | +$21K |
|
1564
Zevia
ZVIA
$184M
| $21K | ﹤0.01% |
+9,813
| New | +$21K |
|
1565
Accuray
ARAY
$177M
| $20K | ﹤0.01% |
11,229
-638
| -5% | -$1.14K |
|
1566
Arqit Quantum
ARQQ
$513M
| $20K | ﹤0.01% |
+1,482
| New | +$20K |
|
1567
CryoPort
CYRX
$433M
| $20K | ﹤0.01% |
3,443
-28,883
| -89% | -$168K |
|
1568
Fidelity MSCI Industrials Index ETF
FIDU
$1.51B
| $20K | ﹤0.01% |
296
-840
| -74% | -$56.8K |
|
1569
National Beverage
FIZZ
$3.67B
| $20K | ﹤0.01% |
482
-419
| -47% | -$17.4K |
|
1570
Guess, Inc.
GES
$869M
| $20K | ﹤0.01% |
+1,812
| New | +$20K |
|
1571
Goldman Sachs BDC
GSBD
$1.3B
| $20K | ﹤0.01% |
1,763
-11,917
| -87% | -$135K |
|
1572
Hayward Holdings
HAYW
$3.38B
| $20K | ﹤0.01% |
1,497
-12,506
| -89% | -$167K |
|
1573
Integra LifeSciences
IART
$1.17B
| $20K | ﹤0.01% |
+935
| New | +$20K |
|
1574
iShares Russell Top 200 Growth ETF
IWY
$15.3B
| $20K | ﹤0.01% |
95
-157
| -62% | -$33.1K |
|
|
SLI
1575
Standard Lithium
SLI
$592M
| $20K | ﹤0.01% |
16,121
-46,276
| -74% | -$57.4K |
|