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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1251
Encore Capital Group
ECPG
$1.06B
| $86K | ﹤0.01% |
1,899
+1,040
| +121% | +$47.1K |
|
1252
Inspired Entertainment
INSE
$253M
| $85K | ﹤0.01% |
8,712
-3,517
| -29% | -$34.3K |
|
1253
Merus
MRUS
$5.21B
| $85K | ﹤0.01% |
1,903
-5,396
| -74% | -$241K |
|
1254
PDS Biotechnology
PDSB
$54.1M
| $85K | ﹤0.01% |
21,653
-3,430
| -14% | -$13.5K |
|
1255
Dine Brands
DIN
$374M
| $84K | ﹤0.01% |
+1,826
| New | +$84K |
|
1256
Karyopharm Therapeutics
KPTI
$49.7M
| $84K | ﹤0.01% |
3,732
+2,332
| +167% | +$52.5K |
|
1257
Orion
OEC
$487M
| $84K | ﹤0.01% |
3,613
+1,221
| +51% | +$28.4K |
|
1258
OneSpaWorld
OSW
$2.29B
| $84K | ﹤0.01% |
6,357
+5,168
| +435% | +$68.3K |
|
|
AXNX
1259
DELISTED
Axonics, Inc. Common Stock
AXNX
| $84K | ﹤0.01% |
1,232
+211
| +21% | +$14.4K |
|
|
OGI
1260
Organigram Holdings
OGI
$252M
| $83K | ﹤0.01% |
39,051
-86,849
| -69% | -$185K |
|
1261
SPDR S&P Dividend ETF
SDY
$20.3B
| $83K | ﹤0.01% |
634
+218
| +52% | +$28.5K |
|
|
EFUT
1262
DELISTED
VanEck Ethereum Strategy ETF
EFUT
| $83K | ﹤0.01% |
2,958
+1,452
| +96% | +$40.7K |
|
1263
Idacorp
IDA
$6.79B
| $82K | ﹤0.01% |
+892
| New | +$82K |
|
|
TPIC
1264
DELISTED
TPI Composites
TPIC
| $82K | ﹤0.01% |
28,244
+14,157
| +100% | +$41.1K |
|
1265
RxSight
RXST
$388M
| $81K | ﹤0.01% |
1,582
-4,503
| -74% | -$231K |
|
1266
Scholastic
SCHL
$691M
| $81K | ﹤0.01% |
+2,162
| New | +$81K |
|
|
STKL
1267
SunOpta
STKL
$759M
| $81K | ﹤0.01% |
11,895
-29,764
| -71% | -$203K |
|
1268
Birkenstock
BIRK
$8.46B
| $80K | ﹤0.01% |
+1,699
| New | +$80K |
|
1269
Genesis Energy
GEL
$2.06B
| $80K | ﹤0.01% |
+7,227
| New | +$80K |
|
1270
Magnachip Semiconductor
MX
$120M
| $80K | ﹤0.01% |
14,514
-3,644
| -20% | -$20.1K |
|
1271
BARK
BARK
$148M
| $79K | ﹤0.01% |
64,424
+56,589
| +722% | +$69.4K |
|
1272
ProShares UltraShort Dow 30
DXD
$51.7M
| $79K | ﹤0.01% |
2,591
-487
| -16% | -$14.8K |
|
1273
iShares US Treasury Bond ETF
GOVT
$28.2B
| $79K | ﹤0.01% |
3,471
-20,748
| -86% | -$472K |
|
|
ZUO
1274
DELISTED
Zuora, Inc.
ZUO
| $79K | ﹤0.01% |
+8,755
| New | +$79K |
|
1275
Immunome
IMNM
$857M
| $78K | ﹤0.01% |
3,165
+448
| +16% | +$11K |
|