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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
WW
626
DELISTED
WW International
WW
| $304K | ﹤0.01% |
4,227
-7,842
| -65% | -$564K |
|
627
Ameriprise Financial
AMP
$46.4B
| $302K | ﹤0.01% |
+2,047
| New | +$302K |
|
628
Wintrust Financial
WTFC
$9.17B
| $302K | ﹤0.01% |
+3,563
| New | +$302K |
|
|
UNVR
629
DELISTED
Univar Solutions Inc.
UNVR
| $300K | ﹤0.01% |
+9,797
| New | +$300K |
|
630
Akebia Therapeutics
AKBA
$777M
| $299K | ﹤0.01% |
33,863
-14,655
| -30% | -$129K |
|
631
Encompass Health
EHC
$12.6B
| $299K | ﹤0.01% |
4,823
+4,817
| +80,283% | +$299K |
|
632
NeoGenomics
NEO
$966M
| $298K | ﹤0.01% |
+19,418
| New | +$298K |
|
633
Petrobras
PBR
$82.2B
| $298K | ﹤0.01% |
24,698
-280,099
| -92% | -$3.38M |
|
634
Medpace
MEDP
$13.4B
| $297K | ﹤0.01% |
4,964
+4,407
| +791% | +$264K |
|
635
World Acceptance Corp
WRLD
$904M
| $297K | ﹤0.01% |
2,599
+2,224
| +593% | +$254K |
|
636
iShares US Transportation ETF
IYT
$604M
| $296K | ﹤0.01% |
5,804
+5,004
| +626% | +$255K |
|
637
ON Semiconductor
ON
$19.7B
| $296K | ﹤0.01% |
16,063
-6,376
| -28% | -$117K |
|
|
VRN
638
DELISTED
Veren
VRN
| $296K | ﹤0.01% |
46,685
-16,537
| -26% | -$105K |
|
639
Air Lease Corp
AL
$7.11B
| $295K | ﹤0.01% |
6,445
+2,087
| +48% | +$95.5K |
|
|
NYMX
640
DELISTED
Nymox Pharmaceutical Corp
NYMX
| $295K | ﹤0.01% |
120,273
+53,393
| +80% | +$131K |
|
641
iShares MSCI United Kingdom ETF
EWU
$2.92B
| $294K | ﹤0.01% |
8,624
+7,336
| +570% | +$250K |
|
|
SIR
642
DELISTED
SELECT INCOME REIT
SIR
| $294K | ﹤0.01% |
30,587
+15,602
| +104% | +$150K |
|
643
Novo Nordisk
NVO
$242B
| $292K | ﹤0.01% |
12,398
-35,266
| -74% | -$831K |
|
|
LGF.B
644
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $292K | ﹤0.01% |
+12,535
| New | +$292K |
|
|
RAD
645
DELISTED
Rite Aid Corporation
RAD
| $291K | ﹤0.01% |
11,389
+5,512
| +94% | +$141K |
|
|
LX
646
LexinFintech Holdings
LX
$973M
| $289K | ﹤0.01% |
+29,141
| New | +$289K |
|
647
Regency Centers
REG
$13.1B
| $289K | ﹤0.01% |
4,476
+731
| +20% | +$47.2K |
|
648
SandRidge Energy
SD
$429M
| $289K | ﹤0.01% |
+26,652
| New | +$289K |
|
649
MACOM Technology Solutions
MTSI
$9.81B
| $288K | ﹤0.01% |
+13,989
| New | +$288K |
|
|
TGI
650
DELISTED
Triumph Group
TGI
| $288K | ﹤0.01% |
+12,388
| New | +$288K |
|