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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Ibotta
IBTA
$763M
| $152K | ﹤0.01% |
+2,033
| New | +$152K |
|
|
BECN
1002
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $152K | ﹤0.01% |
+1,681
| New | +$152K |
|
|
MREO
1003
Mereo BioPharma
MREO
$291M
| $149K | ﹤0.01% |
41,393
+12,151
| +42% | +$43.7K |
|
|
TRTX
1004
TPG RE Finance Trust
TRTX
$743M
| $149K | ﹤0.01% |
+17,306
| New | +$149K |
|
|
RVNC
1005
DELISTED
Revance Therapeutics, Inc.
RVNC
| $149K | ﹤0.01% |
+58,122
| New | +$149K |
|
1006
iShares MSCI Thailand ETF
THD
$235M
| $148K | ﹤0.01% |
2,731
+2,705
| +10,404% | +$147K |
|
1007
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $148K | ﹤0.01% |
8,308
-3,690
| -31% | -$65.7K |
|
1008
Matthews International
MATW
$766M
| $148K | ﹤0.01% |
5,911
+4,812
| +438% | +$120K |
|
1009
Dorchester Minerals
DMLP
$1.2B
| $147K | ﹤0.01% |
+4,795
| New | +$147K |
|
1010
Voya Financial
VOYA
$7.37B
| $147K | ﹤0.01% |
+2,078
| New | +$147K |
|
1011
Aemetis
AMTX
$137M
| $145K | ﹤0.01% |
48,382
-9,678
| -17% | -$29K |
|
1012
Mercury Systems
MRCY
$4.35B
| $145K | ﹤0.01% |
+5,386
| New | +$145K |
|
|
SBDS
1013
Solo Brands, Inc.
SBDS
$26M
| $145K | ﹤0.01% |
63,620
+4,299
| +7% | +$9.8K |
|
1014
Prosperity Bancshares
PB
$6.39B
| $144K | ﹤0.01% |
+2,368
| New | +$144K |
|
1015
Terns Pharmaceuticals
TERN
$628M
| $144K | ﹤0.01% |
+21,243
| New | +$144K |
|
1016
Dollar Tree
DLTR
$20.2B
| $143K | ﹤0.01% |
+1,345
| New | +$143K |
|
1017
STAG Industrial
STAG
$6.78B
| $143K | ﹤0.01% |
+3,967
| New | +$143K |
|
1018
Lexicon Pharmaceuticals
LXRX
$407M
| $142K | ﹤0.01% |
+84,637
| New | +$142K |
|
1019
Pegasystems
PEGA
$9.95B
| $142K | ﹤0.01% |
+4,692
| New | +$142K |
|
1020
Savara
SVRA
$608M
| $142K | ﹤0.01% |
35,357
+25,338
| +253% | +$102K |
|
|
SIX
1021
DELISTED
Six Flags Entertainment Corp.
SIX
| $142K | ﹤0.01% |
4,286
-9,932
| -70% | -$329K |
|
1022
Banco Bradesco
BBD
$33.3B
| $140K | ﹤0.01% |
62,516
-252,434
| -80% | -$565K |
|
1023
IDT Corp
IDT
$1.65B
| $139K | ﹤0.01% |
3,884
+3,260
| +522% | +$117K |
|
1024
C.H. Robinson
CHRW
$15.5B
| $138K | ﹤0.01% |
+1,572
| New | +$138K |
|
1025
Cushman & Wakefield
CWK
$3.82B
| $138K | ﹤0.01% |
13,320
-17,005
| -56% | -$176K |
|