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 | |
|---|---|---|---|---|---|---|
1026
Precigen
PGEN
$1.13B
| $103K | ﹤0.01% |
68,231
-30,031
| -31% | -$45.3K |
|
1027
Evertec
EVTC
$2.14B
| $102K | ﹤0.01% |
3,161
+260
| +9% | +$8.39K |
|
|
GPMT
1028
Granite Point Mortgage Trust
GPMT
$142M
| $102K | ﹤0.01% |
+19,187
| New | +$102K |
|
1029
Children's Place
PLCE
$155M
| $102K | ﹤0.01% |
+2,806
| New | +$102K |
|
1030
LiveRamp
RAMP
$1.73B
| $102K | ﹤0.01% |
+4,360
| New | +$102K |
|
1031
iShares 0-5 Year TIPS Bond ETF
STIP
$12.7B
| $102K | ﹤0.01% |
+1,053
| New | +$102K |
|
|
ENZ
1032
DELISTED
Enzo Biochem, Inc.
ENZ
| $102K | ﹤0.01% |
71,871
+44,140
| +159% | +$62.6K |
|
|
HOLI
1033
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $101K | ﹤0.01% |
6,166
-1,497
| -20% | -$24.5K |
|
1034
Global X Copper Miners ETF NEW
COPX
$2.24B
| $100K | ﹤0.01% |
+2,847
| New | +$100K |
|
1035
RLI Corp
RLI
$6.14B
| $100K | ﹤0.01% |
+1,534
| New | +$100K |
|
1036
Spok Holdings
SPOK
$360M
| $100K | ﹤0.01% |
+12,310
| New | +$100K |
|
1037
Zeta Global
ZETA
$4.84B
| $100K | ﹤0.01% |
12,244
-60
| -0.5% | -$490 |
|
1038
Repare Therapeutics
RPTX
$75.6M
| $99K | ﹤0.01% |
6,797
+6,775
| +30,795% | +$98.7K |
|
|
JMIA
1039
Jumia Technologies
JMIA
$1.21B
| $98K | ﹤0.01% |
30,838
+25,339
| +461% | +$80.5K |
|
1040
Stoke Therapeutics
STOK
$1.29B
| $98K | ﹤0.01% |
+10,658
| New | +$98K |
|
1041
EVgo
EVGO
$554M
| $97K | ﹤0.01% |
+21,821
| New | +$97K |
|
|
FENG
1042
Phoenix New Media
FENG
$30.7M
| $97K | ﹤0.01% |
36,536
-16,494
| -31% | -$43.8K |
|
1043
Immersion
IMMR
$221M
| $97K | ﹤0.01% |
13,814
-17,815
| -56% | -$125K |
|
1044
Photronics
PLAB
$1.33B
| $97K | ﹤0.01% |
5,766
+1,501
| +35% | +$25.3K |
|
|
CHS
1045
DELISTED
Chicos FAS, Inc.
CHS
| $97K | ﹤0.01% |
+19,877
| New | +$97K |
|
1046
VirnetX
VHC
$74.7M
| $96K | ﹤0.01% |
3,729
-2,693
| -42% | -$69.3K |
|
|
TSP
1047
DELISTED
TuSimple Holdings Inc. Class A Common Stock
TSP
| $96K | ﹤0.01% |
+58,959
| New | +$96K |
|
1048
ARK Genomic Revolution ETF
ARKG
$1.04B
| $95K | ﹤0.01% |
3,400
-40,966
| -92% | -$1.14M |
|
1049
Green Brick Partners
GRBK
$3.21B
| $95K | ﹤0.01% |
3,945
+1,317
| +50% | +$31.7K |
|
1050
Smart Sand
SND
$75.1M
| $95K | ﹤0.01% |
53,350
+16,264
| +44% | +$29K |
|