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 | |
|---|---|---|---|---|---|---|
801
NCR Atleos
NATL
$2.85B
| $264K | ﹤0.01% |
+9,279
| New | +$264K |
|
802
iShares MSCI Turkey ETF
TUR
$160M
| $263K | ﹤0.01% |
7,236
-13,634
| -65% | -$496K |
|
803
Full Truck Alliance
YMM
$14.4B
| $261K | ﹤0.01% |
29,052
-4,162
| -13% | -$37.4K |
|
804
Arrowhead Research
ARWR
$3.89B
| $260K | ﹤0.01% |
13,474
-746
| -5% | -$14.4K |
|
805
Logitech
LOGI
$16B
| $260K | ﹤0.01% |
2,898
-2,251
| -44% | -$202K |
|
|
CDMO
806
DELISTED
Avid Bioservices, Inc. Common Stock
CDMO
| $260K | ﹤0.01% |
22,921
+11,463
| +100% | +$130K |
|
807
Sonos
SONO
$1.82B
| $258K | ﹤0.01% |
21,012
+20,695
| +6,528% | +$254K |
|
808
Light & Wonder
LNW
$7.4B
| $257K | ﹤0.01% |
+2,835
| New | +$257K |
|
809
HealthEquity
HQY
$7.92B
| $256K | ﹤0.01% |
+3,136
| New | +$256K |
|
810
Fiverr
FVRR
$869M
| $255K | ﹤0.01% |
9,888
-15,772
| -61% | -$407K |
|
811
Pacer US Small Cap Cash Cows 100 ETF
CALF
$4.12B
| $254K | ﹤0.01% |
+5,478
| New | +$254K |
|
812
Byrna Technologies
BYRN
$486M
| $252K | ﹤0.01% |
14,892
+14,524
| +3,947% | +$246K |
|
813
Evergy
EVRG
$16.6B
| $252K | ﹤0.01% |
4,070
-4,859
| -54% | -$301K |
|
814
Arbutus Biopharma
ABUS
$964M
| $251K | ﹤0.01% |
65,294
-30,239
| -32% | -$116K |
|
815
Hanesbrands
HBI
$2.24B
| $251K | ﹤0.01% |
34,238
-29,323
| -46% | -$215K |
|
816
MarineMax
HZO
$563M
| $251K | ﹤0.01% |
7,131
-29,196
| -80% | -$1.03M |
|
817
Madrigal Pharmaceuticals
MDGL
$9.67B
| $250K | ﹤0.01% |
1,179
-2,393
| -67% | -$507K |
|
818
Neonode
NEON
$69.8M
| $248K | ﹤0.01% |
27,287
+26,713
| +4,654% | +$243K |
|
|
VLRS
819
Controladora Vuela Compañía de Aviación
VLRS
$724M
| $248K | ﹤0.01% |
39,245
+38,298
| +4,044% | +$242K |
|
820
CommScope
COMM
$3.67B
| $247K | ﹤0.01% |
40,460
-28,121
| -41% | -$172K |
|
821
Globalstar
GSAT
$3.86B
| $247K | ﹤0.01% |
+13,308
| New | +$247K |
|
822
Aaon
AAON
$6.88B
| $243K | ﹤0.01% |
2,254
-4,719
| -68% | -$509K |
|
|
RWT
823
Redwood Trust
RWT
$812M
| $242K | ﹤0.01% |
+31,387
| New | +$242K |
|
824
UroGen Pharma
URGN
$911M
| $241K | ﹤0.01% |
19,031
+8,412
| +79% | +$107K |
|
825
Gogo Inc
GOGO
$1.38B
| $240K | ﹤0.01% |
33,456
-11,144
| -25% | -$79.9K |
|