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 |
Advanced Micro Devices
AMD
|
+$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
+$10.1M |
| 3 |
NIO
NIO
|
+$7.66M |
| 4 |
Alibaba
BABA
|
+$7.54M |
| 5 |
Micron Technology
MU
|
+$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$101M |
| 2 |
SPDR Gold Trust
GLD
|
+$15.2M |
| 3 |
Amazon
AMZN
|
+$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
+$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
ProShares Short QQQ
PSQ
$542M
| $494K | ﹤0.01% |
7,974
-520
| -6% | -$32.2K |
|
852
Teucrium Wheat Fund
WEAT
$117M
| $492K | ﹤0.01% |
74,200
| – | – |
|
853
Exelixis
EXEL
$10.1B
| $490K | ﹤0.01% |
26,340
-1,200
| -4% | -$22.3K |
|
854
Quanterix
QTRX
$210M
| $490K | ﹤0.01% |
8,253
-1,500
| -15% | -$89.1K |
|
855
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$165M
| $490K | ﹤0.01% |
30,164
| – | – |
|
856
VanEck Retail ETF
RTH
$264M
| $489K | ﹤0.01% |
2,790
-433
| -13% | -$75.9K |
|
857
American Eagle Outfitters
AEO
$3.17B
| $488K | ﹤0.01% |
12,982
+4,999
| +63% | +$188K |
|
858
Crown Holdings
CCK
$10.9B
| $488K | ﹤0.01% |
4,725
-160
| -3% | -$16.5K |
|
859
uniQure
QURE
$956M
| $488K | ﹤0.01% |
15,618
| – | – |
|
|
TRVG
860
trivago
TRVG
$229M
| $488K | ﹤0.01% |
28,972
| – | – |
|
861
Principal Financial Group
PFG
$17.8B
| $487K | ﹤0.01% |
7,673
+231
| +3% | +$14.7K |
|
862
ManpowerGroup
MAN
$1.78B
| $486K | ﹤0.01% |
4,078
| – | – |
|
|
CTXS
863
DELISTED
Citrix Systems Inc
CTXS
| $486K | ﹤0.01% |
4,145
+300
| +8% | +$35.2K |
|
864
Cirrus Logic
CRUS
$6.03B
| $482K | ﹤0.01% |
5,735
+800
| +16% | +$67.2K |
|
865
Takeda Pharmaceutical
TAK
$48.2B
| $480K | ﹤0.01% |
28,449
-3,343
| -11% | -$56.4K |
|
866
RLX Technology
RLX
$3.3B
| $479K | ﹤0.01% |
54,696
+10,276
| +23% | +$90K |
|
867
Sasol
SSL
$4.55B
| $476K | ﹤0.01% |
30,626
-2,078
| -6% | -$32.3K |
|
|
UXIN
868
Uxin Ltd
UXIN
$705M
| $476K | ﹤0.01% |
1,254
| – | – |
|
869
Workiva
WK
$4.56B
| $476K | ﹤0.01% |
4,214
| – | – |
|
870
Porch Group
PRCH
$1.99B
| $475K | ﹤0.01% |
23,562
-1,036
| -4% | -$20.9K |
|
|
CMPS
871
Compass Pathways
CMPS
$478M
| $474K | ﹤0.01% |
12,757
+1,006
| +9% | +$37.4K |
|
872
Direxion Daily Regional Banks Bull 3X Shares
DPST
$727M
| $473K | ﹤0.01% |
1,077
| – | – |
|
873
Lakeland Industries
LAKE
$143M
| $473K | ﹤0.01% |
21,358
+442
| +2% | +$9.79K |
|
874
Plains GP Holdings
PAGP
$3.64B
| $472K | ﹤0.01% |
39,011
-5,463
| -12% | -$66.1K |
|
|
SIXG
875
Defiance Connective Technologies ETF
SIXG
$641M
| $471K | ﹤0.01% |
12,423
| – | – |
|