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 |
Apple
AAPL
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BWIN
901
Baldwin Insurance Group
BWIN
$2.17B
| $322K | ﹤0.01% |
+12,014
| New | +$322K |
|
|
ARNC
902
DELISTED
Arconic Corporation
ARNC
| $322K | ﹤0.01% |
+12,569
| New | +$322K |
|
903
Cenntro
CENN
$28.3M
| $320K | ﹤0.01% |
14,644
+14,255
| +3,665% | +$312K |
|
904
Viant Technology
DSP
$159M
| $319K | ﹤0.01% |
48,722
+43,027
| +756% | +$282K |
|
905
Vir Biotechnology
VIR
$713M
| $318K | ﹤0.01% |
12,364
-9,334
| -43% | -$240K |
|
906
Spruce Power Holding Corp
SPRU
$28.7M
| $317K | ﹤0.01% |
19,928
+17,669
| +782% | +$281K |
|
907
Middleby
MIDD
$6.99B
| $316K | ﹤0.01% |
+1,933
| New | +$316K |
|
908
Ross Stores
ROST
$48.8B
| $316K | ﹤0.01% |
3,500
+2,428
| +226% | +$219K |
|
|
HOLI
909
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $316K | ﹤0.01% |
19,845
+4,884
| +33% | +$77.8K |
|
910
Build-A-Bear
BBW
$962M
| $314K | ﹤0.01% |
17,189
+7,495
| +77% | +$137K |
|
911
SiTime
SITM
$6.39B
| $314K | ﹤0.01% |
1,269
-3,133
| -71% | -$775K |
|
912
Ring Energy
REI
$215M
| $313K | ﹤0.01% |
82,191
+60,070
| +272% | +$229K |
|
|
JOBS
913
DELISTED
51job, Inc.
JOBS
| $313K | ﹤0.01% |
+5,355
| New | +$313K |
|
|
LSI
914
DELISTED
Life Storage, Inc.
LSI
| $312K | ﹤0.01% |
2,224
-13,618
| -86% | -$1.91M |
|
915
Invesco CurrencyShares British Pound Sterling Trust
FXB
$91M
| $310K | ﹤0.01% |
2,457
-2,108
| -46% | -$266K |
|
916
Varonis Systems
VRNS
$6.31B
| $310K | ﹤0.01% |
6,531
-7,371
| -53% | -$350K |
|
|
SUP
917
DELISTED
Superior Industries International
SUP
| $309K | ﹤0.01% |
66,343
+38,141
| +135% | +$178K |
|
|
MUDS
918
DELISTED
Mudrick Capital Acquisition Corporation II Class A Common Stock
MUDS
| $307K | ﹤0.01% |
30,626
+3,837
| +14% | +$38.5K |
|
919
uniQure
QURE
$959M
| $306K | ﹤0.01% |
+16,979
| New | +$306K |
|
920
TripAdvisor
TRIP
$2.06B
| $304K | ﹤0.01% |
+11,225
| New | +$304K |
|
|
ENV
921
DELISTED
ENVESTNET, INC.
ENV
| $304K | ﹤0.01% |
+4,094
| New | +$304K |
|
922
Applovin
APP
$192B
| $303K | ﹤0.01% |
5,515
-7,383
| -57% | -$406K |
|
923
B. Riley Financial
RILY
$176M
| $303K | ﹤0.01% |
4,342
-9,017
| -67% | -$629K |
|
924
EQT Corp
EQT
$31.9B
| $302K | ﹤0.01% |
8,805
-41,915
| -83% | -$1.44M |
|
|
CLVS
925
DELISTED
Clovis Oncology, Inc.
CLVS
| $302K | ﹤0.01% |
149,844
+115,303
| +334% | +$232K |
|