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 | |
|---|---|---|---|---|---|---|
1076
Leggett & Platt
LEG
$1.31B
| $121K | ﹤0.01% |
10,621
-22,589
| -68% | -$257K |
|
1077
MacroGenics
MGNX
$99.9M
| $121K | ﹤0.01% |
28,657
+16,937
| +145% | +$71.5K |
|
1078
Simmons First National
SFNC
$2.98B
| $121K | ﹤0.01% |
+6,915
| New | +$121K |
|
1079
AerSale
ASLE
$411M
| $120K | ﹤0.01% |
17,352
-9,350
| -35% | -$64.7K |
|
1080
Bitwise Crypto Industry Innovators ETF
BITQ
$341M
| $120K | ﹤0.01% |
8,946
-10,696
| -54% | -$143K |
|
1081
Buckle
BKE
$3.08B
| $120K | ﹤0.01% |
+3,250
| New | +$120K |
|
1082
Syndax Pharmaceuticals
SNDX
$1.36B
| $120K | ﹤0.01% |
5,873
-5,756
| -49% | -$118K |
|
1083
DoorDash
DASH
$110B
| $119K | ﹤0.01% |
1,101
-72,351
| -99% | -$7.82M |
|
1084
Semtech
SMTC
$5.34B
| $119K | ﹤0.01% |
3,990
-43,288
| -92% | -$1.29M |
|
1085
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.68B
| $117K | ﹤0.01% |
+2,275
| New | +$117K |
|
1086
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$4.68B
| $117K | ﹤0.01% |
2,055
-2,999
| -59% | -$171K |
|
1087
Essex Property Trust
ESS
$17.2B
| $117K | ﹤0.01% |
431
-2,451
| -85% | -$665K |
|
1088
MediaAlpha
MAX
$693M
| $117K | ﹤0.01% |
8,890
+7,438
| +512% | +$97.9K |
|
1089
Marriott Vacations Worldwide
VAC
$2.7B
| $117K | ﹤0.01% |
+1,350
| New | +$117K |
|
|
B
1090
DELISTED
Barnes Group Inc.
B
| $117K | ﹤0.01% |
2,837
+2,686
| +1,779% | +$111K |
|
|
AGR
1091
DELISTED
Avangrid, Inc.
AGR
| $117K | ﹤0.01% |
3,309
+2,159
| +188% | +$76.3K |
|
1092
Rexford Industrial Realty
REXR
$10.3B
| $116K | ﹤0.01% |
2,623
-3,205
| -55% | -$142K |
|
|
PRFT
1093
DELISTED
Perficient Inc
PRFT
| $116K | ﹤0.01% |
+1,555
| New | +$116K |
|
1094
Allegiant Air
ALGT
$1.2B
| $115K | ﹤0.01% |
2,292
-19,562
| -90% | -$982K |
|
1095
Denali Therapeutics
DNLI
$2.13B
| $114K | ﹤0.01% |
4,934
+6
| +0.1% | +$139 |
|
1096
Kamada
KMDA
$403M
| $114K | ﹤0.01% |
22,939
+1,371
| +6% | +$6.81K |
|
1097
Perella Weinberg Partners
PWP
$1.44B
| $114K | ﹤0.01% |
7,067
-7,065
| -50% | -$114K |
|
1098
Sixth Street Specialty
TSLX
$2.32B
| $114K | ﹤0.01% |
5,379
-1,219
| -18% | -$25.8K |
|
1099
UWM Holdings
UWMC
$1.52B
| $114K | ﹤0.01% |
+16,471
| New | +$114K |
|
1100
FuelCell Energy
FCEL
$202M
| $113K | ﹤0.01% |
+5,921
| New | +$113K |
|