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
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
Steris
STE
$24B
| $134K | ﹤0.01% |
+727
| New | +$134K |
|
927
Vanguard Total International Stock ETF
VXUS
$105B
| $134K | ﹤0.01% |
+2,600
| New | +$134K |
|
928
Global X US Preferred ETF
PFFD
$2.38B
| $133K | ﹤0.01% |
6,894
+4,906
| +247% | +$94.6K |
|
929
Smith Micro Software
SMSI
$15.4M
| $133K | ﹤0.01% |
7,964
-6,658
| -46% | -$111K |
|
930
Teekay Tankers
TNK
$1.79B
| $133K | ﹤0.01% |
+4,328
| New | +$133K |
|
|
MNTV
931
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $133K | ﹤0.01% |
19,044
+1,492
| +9% | +$10.4K |
|
|
NVRO
932
DELISTED
NEVRO CORP.
NVRO
| $132K | ﹤0.01% |
3,335
-13,264
| -80% | -$525K |
|
|
POSH
933
DELISTED
Poshmark, Inc. Class A Common Stock
POSH
| $132K | ﹤0.01% |
7,398
+719
| +11% | +$12.8K |
|
934
ManpowerGroup
MAN
$1.83B
| $131K | ﹤0.01% |
1,583
+453
| +40% | +$37.5K |
|
935
Gossamer Bio
GOSS
$787M
| $130K | ﹤0.01% |
60,345
+39,557
| +190% | +$85.2K |
|
|
INN
936
Summit Hotel Properties
INN
$613M
| $130K | ﹤0.01% |
+18,059
| New | +$130K |
|
937
Meritage Homes
MTH
$5.77B
| $130K | ﹤0.01% |
+2,840
| New | +$130K |
|
938
ProQR Therapeutics
PRQR
$237M
| $130K | ﹤0.01% |
35,365
+32,922
| +1,348% | +$121K |
|
939
Invesco NASDAQ Next Gen 100 ETF
QQQJ
$690M
| $130K | ﹤0.01% |
+5,468
| New | +$130K |
|
940
Talos Energy
TALO
$1.72B
| $130K | ﹤0.01% |
6,909
-2,584
| -27% | -$48.6K |
|
941
Wingstop
WING
$7.84B
| $130K | ﹤0.01% |
947
+652
| +221% | +$89.5K |
|
|
GOGL
942
DELISTED
Golden Ocean Group
GOGL
| $129K | ﹤0.01% |
14,937
-8,027
| -35% | -$69.3K |
|
943
Live Nation Entertainment
LYV
$40.4B
| $129K | ﹤0.01% |
+1,852
| New | +$129K |
|
|
MOMO
944
Hello Group
MOMO
$1.2B
| $129K | ﹤0.01% |
14,469
-45,774
| -76% | -$408K |
|
945
Cambria Tail Risk ETF
TAIL
$94.1M
| $129K | ﹤0.01% |
8,490
+1,959
| +30% | +$29.8K |
|
946
Marathon Petroleum
MPC
$55.4B
| $128K | ﹤0.01% |
1,100
+200
| +22% | +$23.3K |
|
947
Kartoon Studios
TOON
$38.4M
| $128K | ﹤0.01% |
27,686
-390
| -1% | -$1.8K |
|
948
Nine Energy Service
NINE
$30.6M
| $127K | ﹤0.01% |
+8,803
| New | +$127K |
|
949
Powell Industries
POWL
$3.53B
| $127K | ﹤0.01% |
+3,635
| New | +$127K |
|
|
LL
950
DELISTED
LL Flooring Holdings, Inc.
LL
| $127K | ﹤0.01% |
+22,649
| New | +$127K |
|