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
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.73B
| $259K | ﹤0.01% |
5,981
+435
| +8% | +$18.8K |
|
827
YieldMax NVDA Option Income Strategy ETF
NVDY
$1.86B
| $258K | ﹤0.01% |
15,386
+4,938
| +47% | +$82.8K |
|
828
Petco
WOOF
$1B
| $258K | ﹤0.01% |
91,455
-57,578
| -39% | -$162K |
|
829
Delek US
DK
$1.79B
| $257K | ﹤0.01% |
12,169
-19,907
| -62% | -$420K |
|
|
EU
830
enCore Energy
EU
$438M
| $256K | ﹤0.01% |
89,710
+68,287
| +319% | +$195K |
|
831
GoDaddy
GDDY
$20.1B
| $256K | ﹤0.01% |
+1,422
| New | +$256K |
|
832
Immunome
IMNM
$783M
| $256K | ﹤0.01% |
27,599
+15,445
| +127% | +$143K |
|
833
Enviri
NVRI
$959M
| $255K | ﹤0.01% |
29,395
-34,198
| -54% | -$297K |
|
834
Tango Therapeutics
TNGX
$708M
| $255K | ﹤0.01% |
+49,901
| New | +$255K |
|
|
AIV
835
Aimco
AIV
$1.07B
| $254K | ﹤0.01% |
+29,369
| New | +$254K |
|
836
ChargePoint
CHPT
$235M
| $254K | ﹤0.01% |
18,131
+11,412
| +170% | +$160K |
|
837
Tilray
TLRY
$1.2B
| $254K | ﹤0.01% |
615,504
-493,082
| -44% | -$203K |
|
838
Clean Energy Fuels
CLNE
$561M
| $252K | ﹤0.01% |
129,474
+94,479
| +270% | +$184K |
|
839
Marsh & McLennan
MMC
$97.7B
| $251K | ﹤0.01% |
+1,152
| New | +$251K |
|
840
ProShares UltraShort Real Estate
SRS
$22.3M
| $251K | ﹤0.01% |
5,267
+1,107
| +27% | +$52.8K |
|
|
TUYA
841
Tuya Inc
TUYA
$1.53B
| $251K | ﹤0.01% |
109,035
-120,990
| -53% | -$279K |
|
|
SOBO
842
South Bow Corporation
SOBO
$5.78B
| $251K | ﹤0.01% |
9,717
+6,407
| +194% | +$165K |
|
|
ASA
843
ASA Gold and Precious Metals
ASA
$760M
| $248K | ﹤0.01% |
+7,868
| New | +$248K |
|
844
Harrow
HROW
$1.44B
| $248K | ﹤0.01% |
8,121
-25,659
| -76% | -$784K |
|
845
Monolithic Power Systems
MPWR
$41B
| $248K | ﹤0.01% |
340
-811
| -70% | -$592K |
|
|
SEPN
846
Septerna, Inc. Common Stock
SEPN
$656M
| $248K | ﹤0.01% |
23,525
+23,495
| +78,317% | +$248K |
|
|
EVRI
847
DELISTED
Everi Holdings
EVRI
| $247K | ﹤0.01% |
17,394
-3,127
| -15% | -$44.4K |
|
848
Aemetis
AMTX
$136M
| $245K | ﹤0.01% |
99,077
+9,247
| +10% | +$22.9K |
|
849
ARK Space Exploration & Innovation ETF
ARKX
$397M
| $243K | ﹤0.01% |
10,078
+3,392
| +51% | +$81.8K |
|
850
Clorox
CLX
$15.1B
| $242K | ﹤0.01% |
+2,022
| New | +$242K |
|