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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1701
Immunocore
IMCR
$1.68B
| $22K | ﹤0.01% |
472
-28
| -6% | -$1.31K |
|
1702
iShares Micro-Cap ETF
IWC
$996M
| $22K | ﹤0.01% |
+218
| New | +$22K |
|
1703
iShares Global Energy ETF
IXC
$1.86B
| $22K | ﹤0.01% |
+673
| New | +$22K |
|
|
NEXN
1704
Nexxen International
NEXN
$594M
| $22K | ﹤0.01% |
3,226
-1,295
| -29% | -$8.83K |
|
1705
Invesco S&P 500 Equal Weight Real Estate ETF
RSPR
$108M
| $22K | ﹤0.01% |
+751
| New | +$22K |
|
1706
Silgan Holdings
SLGN
$4.62B
| $22K | ﹤0.01% |
542
-975
| -64% | -$39.6K |
|
|
TPIC
1707
DELISTED
TPI Composites
TPIC
| $22K | ﹤0.01% |
1,991
-3,044
| -60% | -$33.6K |
|
1708
Wrap Technologies
WRAP
$109M
| $22K | ﹤0.01% |
13,279
-15,252
| -53% | -$25.3K |
|
|
STER
1709
DELISTED
Sterling Check Corp. Common Stock
STER
| $22K | ﹤0.01% |
1,274
+1,219
| +2,216% | +$21.1K |
|
|
VIEW
1710
DELISTED
View, Inc. Class A Common Stock
VIEW
| $22K | ﹤0.01% |
+281
| New | +$22K |
|
|
ARBK
1711
Argo Blockchain
ARBK
$19.1M
| $21K | ﹤0.01% |
5,663
-33,059
| -85% | -$123K |
|
1712
American States Water
AWR
$2.77B
| $21K | ﹤0.01% |
273
+200
| +274% | +$15.4K |
|
1713
DigitalBridge
DBRG
$2.21B
| $21K | ﹤0.01% |
1,716
-16,607
| -91% | -$203K |
|
1714
Dorman Products
DORM
$4.79B
| $21K | ﹤0.01% |
262
-789
| -75% | -$63.2K |
|
1715
Enlivex Therapeutics
ENLV
$25.1M
| $21K | ﹤0.01% |
5,126
+821
| +19% | +$3.36K |
|
1716
Enerpac Tool Group
EPAC
$2.31B
| $21K | ﹤0.01% |
1,232
+905
| +277% | +$15.4K |
|
1717
Invesco S&P 100 Equal Weight ETF
EQWL
$1.71B
| $21K | ﹤0.01% |
+322
| New | +$21K |
|
1718
fuboTV
FUBO
$1.5B
| $21K | ﹤0.01% |
6,099
-129,272
| -95% | -$445K |
|
1719
Global Partners
GLP
$1.73B
| $21K | ﹤0.01% |
858
+619
| +259% | +$15.2K |
|
1720
Harrow
HROW
$1.68B
| $21K | ﹤0.01% |
1,764
-14,759
| -89% | -$176K |
|
1721
Lifecore Biomedical
LFCR
$297M
| $21K | ﹤0.01% |
2,434
-1,586
| -39% | -$13.7K |
|
1722
National Fuel Gas
NFG
$7.9B
| $21K | ﹤0.01% |
+350
| New | +$21K |
|
|
ONL
1723
Orion Office REIT
ONL
$157M
| $21K | ﹤0.01% |
2,499
+2,312
| +1,236% | +$19.4K |
|
1724
Pampa Energía
PAM
$3.08B
| $21K | ﹤0.01% |
+961
| New | +$21K |
|
1725
Invesco S&P 500 Low Volatility ETF
SPLV
$7.79B
| $21K | ﹤0.01% |
+378
| New | +$21K |
|