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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
ACI Worldwide
ACIW
$5.17B
| $188K | ﹤0.01% |
+9,024
| New | +$188K |
|
927
iShares US Healthcare Providers ETF
IHF
$828M
| $188K | ﹤0.01% |
+3,685
| New | +$188K |
|
928
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.19B
| $188K | ﹤0.01% |
2,390
+990
| +71% | +$77.9K |
|
929
Haverty Furniture Companies
HVT
$380M
| $187K | ﹤0.01% |
7,544
-6,775
| -47% | -$168K |
|
930
ESS Tech
GWH
$20.5M
| $186K | ﹤0.01% |
3,040
+365
| +14% | +$22.3K |
|
931
IonQ
IONQ
$14B
| $186K | ﹤0.01% |
+36,735
| New | +$186K |
|
932
Snowflake
SNOW
$76.1B
| $186K | ﹤0.01% |
1,100
| – | – |
|
|
STOR
933
DELISTED
STORE Capital Corporation
STOR
| $186K | ﹤0.01% |
+5,938
| New | +$186K |
|
|
BRG
934
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $186K | ﹤0.01% |
6,964
-1,338
| -16% | -$35.7K |
|
935
Federal Realty Investment Trust
FRT
$8.67B
| $185K | ﹤0.01% |
2,060
+1,530
| +289% | +$137K |
|
936
Openlane
KAR
$3.12B
| $185K | ﹤0.01% |
16,601
+5,496
| +49% | +$61.2K |
|
937
KLX Energy Services
KLXE
$34.1M
| $185K | ﹤0.01% |
+22,531
| New | +$185K |
|
938
Clearwater Paper
CLW
$342M
| $183K | ﹤0.01% |
4,874
+2,156
| +79% | +$81K |
|
939
Similarweb
SMWB
$848M
| $182K | ﹤0.01% |
31,152
+31,091
| +50,969% | +$182K |
|
|
GMRE
940
Global Medical REIT
GMRE
$511M
| $180K | ﹤0.01% |
21,138
+14,120
| +201% | +$120K |
|
941
Ares Management
ARES
$40.5B
| $179K | ﹤0.01% |
+2,899
| New | +$179K |
|
942
Clean Harbors
CLH
$12.6B
| $179K | ﹤0.01% |
1,628
+737
| +83% | +$81K |
|
943
Paymentus
PAY
$4.12B
| $178K | ﹤0.01% |
+18,372
| New | +$178K |
|
|
MGIC
944
Magic Software Enterprises
MGIC
$1.01B
| $177K | ﹤0.01% |
11,383
+4,977
| +78% | +$77.4K |
|
945
Charles River Laboratories
CRL
$7.86B
| $176K | ﹤0.01% |
+896
| New | +$176K |
|
946
Immersion
IMMR
$221M
| $173K | ﹤0.01% |
31,629
-4,587
| -13% | -$25.1K |
|
947
Direxion Daily Homebuilders & Supplies Bull 3X Shares
NAIL
$652M
| $173K | ﹤0.01% |
7,955
+2,743
| +53% | +$59.7K |
|
948
Terex
TEX
$3.45B
| $173K | ﹤0.01% |
5,819
-10,171
| -64% | -$302K |
|
949
Vanguard FTSE Developed Markets ETF
VEA
$175B
| $173K | ﹤0.01% |
+4,759
| New | +$173K |
|
950
Teucrium Wheat Fund
WEAT
$117M
| $173K | ﹤0.01% |
18,941
-7,133
| -27% | -$65.2K |
|