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 |
Apple
AAPL
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1626
Iris Energy
IREN
$9.24B
| $15K | ﹤0.01% |
5,102
-5,516
| -52% | -$16.2K |
|
1627
iShares Core S&P Total US Stock Market ETF
ITOT
$76.7B
| $15K | ﹤0.01% |
173
-3,927
| -96% | -$340K |
|
|
NXDR
1628
Nextdoor Holdings
NXDR
$805M
| $15K | ﹤0.01% |
7,238
-6,927
| -49% | -$14.4K |
|
|
LAND
1629
Gladstone Land Corp
LAND
$321M
| $15K | ﹤0.01% |
933
-823
| -47% | -$13.2K |
|
|
TEAD
1630
Teads Holding Co. Common Stock
TEAD
$163M
| $15K | ﹤0.01% |
+3,705
| New | +$15K |
|
1631
Organogenesis Holdings
ORGO
$625M
| $15K | ﹤0.01% |
7,328
+4,949
| +208% | +$10.1K |
|
1632
VirnetX
VHC
$74.7M
| $15K | ﹤0.01% |
590
-3,139
| -84% | -$79.8K |
|
|
ZH
1633
Zhihu
ZH
$464M
| $15K | ﹤0.01% |
2,071
-470
| -18% | -$3.4K |
|
|
STSA
1634
DELISTED
Satsuma Pharmaceuticals, Inc. Common Stock
STSA
| $15K | ﹤0.01% |
21,864
-10,701
| -33% | -$7.34K |
|
1635
MarketWise
MKTW
$49.2M
| $14K | ﹤0.01% |
390
-57
| -13% | -$2.05K |
|
|
MODV
1636
DELISTED
ModivCare
MODV
| $14K | ﹤0.01% |
+175
| New | +$14K |
|
1637
Arbutus Biopharma
ABUS
$855M
| $14K | ﹤0.01% |
4,930
-41,080
| -89% | -$117K |
|
|
ADAP
1638
Adaptimmune Therapeutics
ADAP
$14.8M
| $14K | ﹤0.01% |
13,089
+7,985
| +156% | +$8.54K |
|
1639
Couchbase
BASE
$1.35B
| $14K | ﹤0.01% |
1,004
-310
| -24% | -$4.32K |
|
|
CIO
1640
City Office REIT
CIO
$280M
| $14K | ﹤0.01% |
2,107
+1,434
| +213% | +$9.53K |
|
1641
ProShares Ultra Energy
DIG
$71.4M
| $14K | ﹤0.01% |
376
-1,706
| -82% | -$63.5K |
|
1642
Excelerate Energy
EE
$770M
| $14K | ﹤0.01% |
676
-488
| -42% | -$10.1K |
|
1643
First Interstate BancSystem
FIBK
$3.43B
| $14K | ﹤0.01% |
+469
| New | +$14K |
|
1644
NewMarket
NEU
$7.87B
| $14K | ﹤0.01% |
+41
| New | +$14K |
|
1645
The 3D Printing ETF
PRNT
$78.9M
| $14K | ﹤0.01% |
615
+256
| +71% | +$5.83K |
|
1646
FreightCar America
RAIL
$162M
| $14K | ﹤0.01% |
4,585
-7,727
| -63% | -$23.6K |
|
|
SELF
1647
Global Self Storage
SELF
$58.4M
| $14K | ﹤0.01% |
2,820
-298
| -10% | -$1.48K |
|
1648
ProShares Ultra Real Estate
URE
$60.8M
| $14K | ﹤0.01% |
259
+217
| +517% | +$11.7K |
|
1649
Viridian Therapeutics
VRDN
$1.54B
| $14K | ﹤0.01% |
559
-4,502
| -89% | -$113K |
|
1650
Varex Imaging
VREX
$469M
| $14K | ﹤0.01% |
+810
| New | +$14K |
|