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 | |
|---|---|---|---|---|---|---|
1526
Flotek Industries
FTK
$341M
| $21K | ﹤0.01% |
+4,268
| New | +$21K |
|
1527
IDEX
IEX
$12.1B
| $21K | ﹤0.01% |
+98
| New | +$21K |
|
1528
Kopin
KOPN
$412M
| $21K | ﹤0.01% |
29,778
+15,583
| +110% | +$11K |
|
1529
Kratos Defense & Security Solutions
KTOS
$11.7B
| $21K | ﹤0.01% |
+930
| New | +$21K |
|
1530
Bandwidth Inc
BAND
$495M
| $21K | ﹤0.01% |
1,236
-2,138
| -63% | -$36.3K |
|
1531
Myomo
MYO
$31.9M
| $21K | ﹤0.01% |
5,441
+844
| +18% | +$3.26K |
|
|
YRD
1532
Yiren Digital
YRD
$518M
| $21K | ﹤0.01% |
+3,789
| New | +$21K |
|
1533
Evolution Petroleum
EPM
$179M
| $20K | ﹤0.01% |
3,894
-5,453
| -58% | -$28K |
|
1534
Gilat Satellite Networks
GILT
$619M
| $20K | ﹤0.01% |
3,840
+50
| +1% | +$260 |
|
1535
Globus Maritime Ltd
GLBS
$21.6M
| $20K | ﹤0.01% |
10,934
+6,081
| +125% | +$11.1K |
|
1536
Houston American Energy
HUSA
$233M
| $20K | ﹤0.01% |
1,878
+441
| +31% | +$4.7K |
|
|
NXDR
1537
Nextdoor Holdings
NXDR
$805M
| $20K | ﹤0.01% |
8,255
-3,179
| -28% | -$7.7K |
|
1538
MiMedx Group
MDXG
$1.03B
| $20K | ﹤0.01% |
+3,403
| New | +$20K |
|
1539
The RealReal
REAL
$1.09B
| $20K | ﹤0.01% |
6,527
-88,684
| -93% | -$272K |
|
1540
Safety Shot
SHOT
$83.7M
| $20K | ﹤0.01% |
16,759
+7,033
| +72% | +$8.39K |
|
1541
Sasol
SSL
$4.46B
| $20K | ﹤0.01% |
3,043
+1,278
| +72% | +$8.4K |
|
|
TBIL
1542
US Treasury 3 Month Bill ETF
TBIL
$5.96B
| $20K | ﹤0.01% |
+400
| New | +$20K |
|
1543
Viridian Therapeutics
VRDN
$1.54B
| $20K | ﹤0.01% |
+911
| New | +$20K |
|
1544
Ituran Location and Control
ITRN
$696M
| $19K | ﹤0.01% |
740
+398
| +116% | +$10.2K |
|
1545
Airgain
AIRG
$48.9M
| $19K | ﹤0.01% |
2,645
-6,435
| -71% | -$46.2K |
|
1546
Amplify Seymour Cannabis ETF
CNBS
$101M
| $19K | ﹤0.01% |
359
+329
| +1,097% | +$17.4K |
|
1547
PC Connection
CNXN
$1.6B
| $19K | ﹤0.01% |
260
+55
| +27% | +$4.02K |
|
1548
Immunome
IMNM
$802M
| $19K | ﹤0.01% |
+1,326
| New | +$19K |
|
1549
Prelude Therapeutics
PRLD
$64M
| $19K | ﹤0.01% |
+9,332
| New | +$19K |
|
1550
ProShares Ultra 7-10 Year Treasury
UST
$19.5M
| $19K | ﹤0.01% |
435
+269
| +162% | +$11.7K |
|