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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
HUYA
851
Huya Inc
HUYA
$765M
| $185K | ﹤0.01% |
51,839
+15,022
| +41% | +$53.6K |
|
|
TPIC
852
DELISTED
TPI Composites
TPIC
| $185K | ﹤0.01% |
17,921
+1,144
| +7% | +$11.8K |
|
853
Atomera
ATOM
$103M
| $184K | ﹤0.01% |
21,063
+8,436
| +67% | +$73.7K |
|
854
Camping World
CWH
$1.1B
| $183K | ﹤0.01% |
6,107
-18,002
| -75% | -$539K |
|
855
Napco Security Technologies
NSSC
$1.48B
| $183K | ﹤0.01% |
5,287
-966
| -15% | -$33.4K |
|
856
WD-40
WDFC
$2.88B
| $183K | ﹤0.01% |
+974
| New | +$183K |
|
857
iShares MSCI South Africa ETF
EZA
$442M
| $182K | ﹤0.01% |
4,585
+4,485
| +4,485% | +$178K |
|
858
Kratos Defense & Security Solutions
KTOS
$11.4B
| $182K | ﹤0.01% |
12,705
+6,911
| +119% | +$99K |
|
859
Centrus Energy
LEU
$4.08B
| $179K | ﹤0.01% |
5,523
-1,068
| -16% | -$34.6K |
|
860
Tetra Tech
TTEK
$9.51B
| $179K | ﹤0.01% |
5,470
+5,315
| +3,429% | +$174K |
|
861
Telus
TU
$24.4B
| $179K | ﹤0.01% |
+9,224
| New | +$179K |
|
862
Bausch Health
BHC
$2.68B
| $178K | ﹤0.01% |
22,329
-39,031
| -64% | -$311K |
|
863
iShares MSCI United Kingdom ETF
EWU
$2.95B
| $178K | ﹤0.01% |
5,511
-16,825
| -75% | -$543K |
|
864
Reviva Pharmaceuticals
RVPH
$30.1M
| $178K | ﹤0.01% |
+30,452
| New | +$178K |
|
865
Xponential Fitness
XPOF
$307M
| $178K | ﹤0.01% |
10,357
+2,586
| +33% | +$44.4K |
|
866
Annexon
ANNX
$280M
| $176K | ﹤0.01% |
50,020
+40,002
| +399% | +$141K |
|
867
Interparfums
IPAR
$3.49B
| $175K | ﹤0.01% |
1,298
+959
| +283% | +$129K |
|
|
SOL
868
Emeren Group
SOL
$95.5M
| $175K | ﹤0.01% |
46,339
-14,970
| -24% | -$56.5K |
|
869
Mesa Air Group
MESA
$58.6M
| $174K | ﹤0.01% |
+68,617
| New | +$174K |
|
870
Patterson-UTI
PTEN
$2.14B
| $174K | ﹤0.01% |
+14,538
| New | +$174K |
|
871
InfraCap MLP ETF
AMZA
$403M
| $173K | ﹤0.01% |
+5,233
| New | +$173K |
|
|
BLU
872
DELISTED
BELLUS Health Inc.
BLU
| $172K | ﹤0.01% |
11,722
+5,545
| +90% | +$81.4K |
|
873
Cosmos Holdings
COSM
$25.4M
| $171K | ﹤0.01% |
+57,446
| New | +$171K |
|
874
Kimbell Royalty Partners
KRP
$1.28B
| $171K | ﹤0.01% |
+11,634
| New | +$171K |
|
875
Altimmune
ALT
$326M
| $170K | ﹤0.01% |
+48,336
| New | +$170K |
|