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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
Amplify Alternative Harvest ETF
MJ
$171M
| $134K | ﹤0.01% |
3,759
-642
| -15% | -$22.9K |
|
952
PharmaCyte Biotech
PMCB
$6.86M
| $134K | ﹤0.01% |
47,149
-86,051
| -65% | -$245K |
|
953
Direxion Daily CSI China Internet Index Bull 2X Shares
CWEB
$366M
| $133K | ﹤0.01% |
3,717
+347
| +10% | +$12.4K |
|
954
Relay Therapeutics
RLAY
$700M
| $133K | ﹤0.01% |
10,592
+2,509
| +31% | +$31.5K |
|
955
Immunome
IMNM
$783M
| $132K | ﹤0.01% |
16,804
+10,381
| +162% | +$81.5K |
|
956
Owens & Minor
OMI
$423M
| $132K | ﹤0.01% |
+6,952
| New | +$132K |
|
957
Protalix BioTherapeutics
PLX
$139M
| $132K | ﹤0.01% |
+66,379
| New | +$132K |
|
958
Avidity Biosciences
RNA
$5.28B
| $132K | ﹤0.01% |
11,972
+2,725
| +29% | +$30K |
|
959
CRISPR Therapeutics
CRSP
$5.08B
| $131K | ﹤0.01% |
2,340
-13,437
| -85% | -$752K |
|
960
West Pharmaceutical
WST
$18.4B
| $131K | ﹤0.01% |
+344
| New | +$131K |
|
961
Dine Brands
DIN
$361M
| $129K | ﹤0.01% |
2,239
+1,727
| +337% | +$99.5K |
|
962
Golar LNG
GLNG
$4.27B
| $129K | ﹤0.01% |
6,441
-495
| -7% | -$9.91K |
|
963
GSI Technology
GSIT
$96.6M
| $129K | ﹤0.01% |
23,364
+23,321
| +54,235% | +$129K |
|
964
Global X Artificial Intelligence & Technology ETF
AIQ
$4.88B
| $128K | ﹤0.01% |
4,584
+4,523
| +7,415% | +$126K |
|
965
Catalyst Pharmaceutical
CPRX
$2.42B
| $128K | ﹤0.01% |
+9,570
| New | +$128K |
|
|
DADA
966
DELISTED
Dada Nexus
DADA
| $128K | ﹤0.01% |
24,127
-24,623
| -51% | -$131K |
|
967
Evolus
EOLS
$475M
| $126K | ﹤0.01% |
17,409
+10,902
| +168% | +$78.9K |
|
968
Jones Lang LaSalle
JLL
$14.6B
| $126K | ﹤0.01% |
+815
| New | +$126K |
|
969
Adecoagro
AGRO
$823M
| $125K | ﹤0.01% |
13,432
-22,045
| -62% | -$205K |
|
970
Fresenius Medical Care
FMS
$14.8B
| $125K | ﹤0.01% |
5,239
-9,621
| -65% | -$230K |
|
|
AIRC
971
DELISTED
Apartment Income REIT Corp.
AIRC
| $124K | ﹤0.01% |
3,458
-8,415
| -71% | -$302K |
|
972
Invesco CurrencyShares Euro Currency Trust
FXE
$531M
| $123K | ﹤0.01% |
1,230
+230
| +23% | +$23K |
|
973
Cooper-Standard Automotive
CPS
$685M
| $122K | ﹤0.01% |
8,590
-3,839
| -31% | -$54.5K |
|
974
Pitney Bowes
PBI
$1.97B
| $122K | ﹤0.01% |
+34,615
| New | +$122K |
|
975
Riot Platforms
RIOT
$5.78B
| $122K | ﹤0.01% |
10,400
| – | – |
|