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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1726
Nelnet
NNI
$4.46B
| $9K | ﹤0.01% |
+88
| New | +$9K |
|
1727
Nomad Foods
NOMD
$2.12B
| $9K | ﹤0.01% |
+481
| New | +$9K |
|
1728
OmniAb
OABI
$236M
| $9K | ﹤0.01% |
2,317
+374
| +19% | +$1.45K |
|
1729
Porch Group
PRCH
$1.82B
| $9K | ﹤0.01% |
6,116
-15,938
| -72% | -$23.5K |
|
1730
QuickLogic
QUIK
$92.3M
| $9K | ﹤0.01% |
1,264
-630
| -33% | -$4.49K |
|
1731
REE Automotive
REE
$20.5M
| $9K | ﹤0.01% |
1,405
-1,092
| -44% | -$7K |
|
1732
The RMR Group
RMR
$288M
| $9K | ﹤0.01% |
358
-2,340
| -87% | -$58.8K |
|
1733
Invesco S&P 500 Pure Value ETF
RPV
$1.37B
| $9K | ﹤0.01% |
+109
| New | +$9K |
|
1734
SelectQuote
SLQT
$361M
| $9K | ﹤0.01% |
4,494
+4,463
| +14,397% | +$8.94K |
|
1735
Direxion Daily S&P 500 Bull 2X Shares
SPUU
$198M
| $9K | ﹤0.01% |
+68
| New | +$9K |
|
1736
Savers
SVV
$1.94B
| $9K | ﹤0.01% |
881
-995
| -53% | -$10.2K |
|
1737
Vista Energy
VIST
$3.72B
| $9K | ﹤0.01% |
+208
| New | +$9K |
|
1738
Workhorse Group
WKHS
$17.7M
| $9K | ﹤0.01% |
+881
| New | +$9K |
|
|
GRTS
1739
DELISTED
Gritstone bio, Inc. Common Stock
GRTS
| $9K | ﹤0.01% |
17,116
-9,176
| -35% | -$4.83K |
|
1740
Innovative Solutions & Support
ISSC
$197M
| $8K | ﹤0.01% |
1,325
-600
| -31% | -$3.62K |
|
1741
Global X Lithium & Battery Tech ETF
LIT
$1.14B
| $8K | ﹤0.01% |
+189
| New | +$8K |
|
1742
LG Display
LPL
$4.46B
| $8K | ﹤0.01% |
+2,148
| New | +$8K |
|
1743
Maxeon Solar Technologies
MAXN
$65M
| $8K | ﹤0.01% |
+884
| New | +$8K |
|
1744
Arcosa
ACA
$4.67B
| $8K | ﹤0.01% |
90
-777
| -90% | -$69.1K |
|
1745
Invesco Taxable Municipal Bond ETF
BAB
$922M
| $8K | ﹤0.01% |
312
+174
| +126% | +$4.46K |
|
1746
Bioventus
BVS
$484M
| $8K | ﹤0.01% |
689
-12,694
| -95% | -$147K |
|
1747
Global X Dow 30 Covered Call ETF
DJIA
$134M
| $8K | ﹤0.01% |
370
+272
| +278% | +$5.88K |
|
1748
iShares MSCI Italy ETF
EWI
$729M
| $8K | ﹤0.01% |
206
-145
| -41% | -$5.63K |
|
1749
First Bancorp
FBNC
$2.29B
| $8K | ﹤0.01% |
+200
| New | +$8K |
|
1750
Fresenius Medical Care
FMS
$14.7B
| $8K | ﹤0.01% |
+376
| New | +$8K |
|