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 | |
|---|---|---|---|---|---|---|
|
SP
976
DELISTED
SP Plus Corporation
SP
| $157K | ﹤0.01% |
5,036
-887
| -15% | -$27.7K |
|
|
YELL
977
DELISTED
Yellow Corporation Common Stock
YELL
| $157K | ﹤0.01% |
31,146
-27,147
| -47% | -$137K |
|
|
HT
978
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
| $156K | ﹤0.01% |
19,666
+17,413
| +773% | +$138K |
|
|
VVNT
979
DELISTED
Vivint Smart Home, Inc. Class A Common Stock
VVNT
| $156K | ﹤0.01% |
23,722
+18,686
| +371% | +$123K |
|
980
Carriage Services
CSV
$663M
| $155K | ﹤0.01% |
4,845
-378
| -7% | -$12.1K |
|
981
Bioceres Crop Solutions
BIOX
$122M
| $154K | ﹤0.01% |
+11,832
| New | +$154K |
|
982
Wayfair
W
$11.4B
| $154K | ﹤0.01% |
4,745
-6,866
| -59% | -$223K |
|
983
CRISPR Therapeutics
CRSP
$5.09B
| $152K | ﹤0.01% |
2,340
| – | – |
|
984
Evergy
EVRG
$16.7B
| $152K | ﹤0.01% |
2,568
+2,016
| +365% | +$119K |
|
985
Interface
TILE
$1.66B
| $152K | ﹤0.01% |
16,941
+8,564
| +102% | +$76.8K |
|
986
Halozyme
HALO
$9.05B
| $151K | ﹤0.01% |
+3,831
| New | +$151K |
|
|
PTRA
987
DELISTED
Proterra Inc. Common Stock
PTRA
| $151K | ﹤0.01% |
+30,455
| New | +$151K |
|
988
Masimo
MASI
$7.88B
| $150K | ﹤0.01% |
+1,066
| New | +$150K |
|
989
VirnetX
VHC
$76.8M
| $150K | ﹤0.01% |
6,422
+4,373
| +213% | +$102K |
|
990
Vanguard Mega Cap 300 Index ETF
MGC
$7.84B
| $149K | ﹤0.01% |
+1,200
| New | +$149K |
|
991
Bio-Techne
TECH
$8.08B
| $148K | ﹤0.01% |
2,092
+1,624
| +347% | +$115K |
|
992
Advanced Micro Devices
AMD
$252B
| $147K | ﹤0.01% |
2,334
-365,499
| -99% | -$23M |
|
993
Fidelity Nasdaq Composite Index ETF
ONEQ
$8.74B
| $146K | ﹤0.01% |
3,533
-491
| -12% | -$20.3K |
|
994
ProShares Ultra Energy
DIG
$72.3M
| $145K | ﹤0.01% |
4,774
-4,031
| -46% | -$122K |
|
995
EverQuote
EVER
$902M
| $145K | ﹤0.01% |
21,302
+20,839
| +4,501% | +$142K |
|
|
LGF.A
996
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $145K | ﹤0.01% |
19,595
+15,931
| +435% | +$118K |
|
997
Phillips 66
PSX
$53.6B
| $144K | ﹤0.01% |
1,792
-38,831
| -96% | -$3.12M |
|
998
Signet Jewelers
SIG
$3.77B
| $144K | ﹤0.01% |
2,518
-10,189
| -80% | -$583K |
|
999
TORM
TRMD
$2.22B
| $144K | ﹤0.01% |
+7,105
| New | +$144K |
|
|
HPP
1000
Hudson Pacific Properties
HPP
$1.11B
| $143K | ﹤0.01% |
13,089
+1,690
| +15% | +$18.5K |
|