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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
HGEN
901
DELISTED
HUMANIGEN, INC.
HGEN
| $272K | ﹤0.01% |
+15,567
| New | +$272K |
|
902
W.W. Grainger
GWW
$48.5B
| $271K | ﹤0.01% |
+666
| New | +$271K |
|
903
InterDigital
IDCC
$8.38B
| $271K | ﹤0.01% |
+4,473
| New | +$271K |
|
904
abrdn Physical Silver Shares ETF
SIVR
$2.57B
| $271K | ﹤0.01% |
10,635
-14,405
| -58% | -$367K |
|
|
VAR
905
DELISTED
Varian Medical Systems, Inc.
VAR
| $271K | ﹤0.01% |
+1,550
| New | +$271K |
|
906
Duluth Holdings
DLTH
$133M
| $268K | ﹤0.01% |
25,459
+21,540
| +550% | +$227K |
|
907
Oppenheimer Holdings
OPY
$815M
| $268K | ﹤0.01% |
8,558
+576
| +7% | +$18K |
|
908
Upland Software
UPLD
$70.8M
| $268K | ﹤0.01% |
5,857
+2,795
| +91% | +$128K |
|
909
Esperion Therapeutics
ESPR
$563M
| $266K | ﹤0.01% |
10,260
-8,124
| -44% | -$211K |
|
910
Huntington Bancshares
HBAN
$25.9B
| $266K | ﹤0.01% |
21,105
-42,635
| -67% | -$537K |
|
911
Invesco Aerospace & Defense ETF
PPA
$6.31B
| $265K | ﹤0.01% |
3,911
+998
| +34% | +$67.6K |
|
912
ProShares UltraShort S&P500
SDS
$468M
| $265K | ﹤0.01% |
4,280
-16,910
| -80% | -$1.05M |
|
|
DX
913
Dynex Capital
DX
$1.63B
| $262K | ﹤0.01% |
+14,721
| New | +$262K |
|
|
OZON
914
DELISTED
Ozon Holdings PLC American Depositary Shares, each ADS representing one ordinary share
OZON
| $262K | ﹤0.01% |
+6,340
| New | +$262K |
|
915
AeroVironment
AVAV
$12.1B
| $261K | ﹤0.01% |
+3,010
| New | +$261K |
|
916
Brunswick
BC
$4.36B
| $261K | ﹤0.01% |
+3,428
| New | +$261K |
|
917
LendingClub
LC
$1.92B
| $260K | ﹤0.01% |
+24,639
| New | +$260K |
|
918
Eversource Energy
ES
$24.1B
| $259K | ﹤0.01% |
+2,995
| New | +$259K |
|
|
RUSL
919
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $259K | ﹤0.01% |
12,027
+11,177
| +1,315% | +$241K |
|
920
National CineMedia
NCMI
$443M
| $258K | ﹤0.01% |
6,952
+6,520
| +1,509% | +$242K |
|
|
SII
921
Sprott
SII
$1.78B
| $258K | ﹤0.01% |
8,928
+8,831
| +9,104% | +$255K |
|
922
EchoStar
SATS
$22.2B
| $257K | ﹤0.01% |
+12,138
| New | +$257K |
|
923
Vuzix
VUZI
$183M
| $256K | ﹤0.01% |
28,239
+3,348
| +13% | +$30.4K |
|
|
SCU
924
DELISTED
Sculptor Capital Management, Inc. Class A Common Stock
SCU
| $256K | ﹤0.01% |
16,881
+13,232
| +363% | +$201K |
|
925
Actinium Pharmaceuticals
ATNM
$52.4M
| $255K | ﹤0.01% |
+32,796
| New | +$255K |
|