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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1051
International Flavors & Fragrances
IFF
$16.8B
| $109K | ﹤0.01% |
1,409
-9,035
| -87% | -$699K |
|
1052
Cerence
CRNC
$445M
| $108K | ﹤0.01% |
+13,749
| New | +$108K |
|
|
DX
1053
Dynex Capital
DX
$1.63B
| $108K | ﹤0.01% |
+8,369
| New | +$108K |
|
1054
Roundhill Generative AI & Technology ETF
CHAT
$590M
| $107K | ﹤0.01% |
3,083
-3,218
| -51% | -$112K |
|
|
SMST
1055
Tidal Trust II Defiance Daily Target 2x Short MSTR ETF
SMST
$35.2M
| $107K | ﹤0.01% |
1,312
+1,191
| +984% | +$97.1K |
|
|
CURB
1056
Curbline Properties Corp.
CURB
$2.39B
| $106K | ﹤0.01% |
4,390
-107
| -2% | -$2.58K |
|
1057
Churchill Downs
CHDN
$6.8B
| $105K | ﹤0.01% |
+953
| New | +$105K |
|
1058
i3 Verticals
IIIV
$728M
| $105K | ﹤0.01% |
4,289
-1,505
| -26% | -$36.8K |
|
1059
Mueller Industries
MLI
$11B
| $105K | ﹤0.01% |
1,391
-980
| -41% | -$74K |
|
|
AIPI
1060
REX AI Equity Premium Income ETF
AIPI
$350M
| $105K | ﹤0.01% |
+2,634
| New | +$105K |
|
1061
Altimmune
ALT
$327M
| $104K | ﹤0.01% |
20,821
-160,351
| -89% | -$801K |
|
1062
ProShares UltraShort Euro
EUO
$33.6M
| $104K | ﹤0.01% |
3,240
-4,152
| -56% | -$133K |
|
1063
ARKO Corp
ARKO
$568M
| $103K | ﹤0.01% |
26,143
+14,203
| +119% | +$56K |
|
1064
SM Energy
SM
$3.11B
| $103K | ﹤0.01% |
3,458
-5,075
| -59% | -$151K |
|
1065
FTAI Aviation
FTAI
$17.4B
| $102K | ﹤0.01% |
923
-6,476
| -88% | -$716K |
|
1066
NIO
NIO
$13.8B
| $102K | ﹤0.01% |
26,830
-1,215,117
| -98% | -$4.62M |
|
1067
Sprott Gold Miners ETF
SGDM
$546M
| $102K | ﹤0.01% |
+2,692
| New | +$102K |
|
1068
Arhaus
ARHS
$1.51B
| $101K | ﹤0.01% |
11,660
+10,845
| +1,331% | +$93.9K |
|
1069
Leggett & Platt
LEG
$1.31B
| $101K | ﹤0.01% |
12,890
+11,299
| +710% | +$88.5K |
|
1070
The RealReal
REAL
$1.13B
| $101K | ﹤0.01% |
18,886
+18,717
| +11,075% | +$100K |
|
|
PAL
1071
Proficient Auto Logistics
PAL
$192M
| $101K | ﹤0.01% |
+12,114
| New | +$101K |
|
|
QQQP
1072
Investment Managers Series Trust II Tradr 2X Long Innovation 100 Quarterly ETF
QQQP
$12.7M
| $101K | ﹤0.01% |
+920
| New | +$101K |
|
1073
Genco Shipping & Trading
GNK
$778M
| $100K | ﹤0.01% |
+7,491
| New | +$100K |
|
|
ZEPP
1074
Zepp Health
ZEPP
$725M
| $100K | ﹤0.01% |
+34,003
| New | +$100K |
|
|
LGF.B
1075
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $100K | ﹤0.01% |
12,695
-10,326
| -45% | -$81.3K |
|