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 | |
|---|---|---|---|---|---|---|
|
GBT
851
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $371K | ﹤0.01% |
+10,714
| New | +$371K |
|
852
OneMain Financial
OMF
$7.22B
| $370K | ﹤0.01% |
7,814
-6,506
| -45% | -$308K |
|
|
SOHU
853
Sohu.com
SOHU
$474M
| $370K | ﹤0.01% |
22,042
+12,859
| +140% | +$216K |
|
854
CommScope
COMM
$3.59B
| $369K | ﹤0.01% |
46,841
+3,264
| +7% | +$25.7K |
|
855
BioXcel Therapeutics
BTAI
$51.2M
| $367K | ﹤0.01% |
1,100
+979
| +809% | +$327K |
|
856
Entergy
ETR
$39.5B
| $367K | ﹤0.01% |
6,298
-11,638
| -65% | -$678K |
|
857
Kosmos Energy
KOS
$832M
| $367K | ﹤0.01% |
51,048
+33,006
| +183% | +$237K |
|
858
Invesco S&P 500 High Beta ETF
SPHB
$443M
| $367K | ﹤0.01% |
+4,834
| New | +$367K |
|
859
Expeditors International
EXPD
$16.5B
| $365K | ﹤0.01% |
3,546
-1,280
| -27% | -$132K |
|
860
GrowGeneration
GRWG
$89.1M
| $364K | ﹤0.01% |
+39,582
| New | +$364K |
|
|
MOMO
861
Hello Group
MOMO
$1.22B
| $364K | ﹤0.01% |
+63,030
| New | +$364K |
|
|
PLYA
862
DELISTED
Playa Hotels & Resorts
PLYA
| $363K | ﹤0.01% |
42,017
+26,731
| +175% | +$231K |
|
863
American Well
AMWL
$106M
| $362K | ﹤0.01% |
4,308
-1,990
| -32% | -$167K |
|
864
St. Joe Company
JOE
$2.91B
| $362K | ﹤0.01% |
+6,123
| New | +$362K |
|
865
iShares Biotechnology ETF
IBB
$5.64B
| $361K | ﹤0.01% |
+2,776
| New | +$361K |
|
866
Perdoceo Education
PRDO
$2.16B
| $361K | ﹤0.01% |
31,472
+20,721
| +193% | +$238K |
|
867
Immersion
IMMR
$222M
| $360K | ﹤0.01% |
64,863
+48,362
| +293% | +$268K |
|
868
Unum
UNM
$12.6B
| $360K | ﹤0.01% |
11,448
+5,343
| +88% | +$168K |
|
869
Norfolk Southern
NSC
$61.1B
| $358K | ﹤0.01% |
+1,257
| New | +$358K |
|
|
BBIG
870
DELISTED
Vinco Ventures, Inc. Common Stock
BBIG
| $358K | ﹤0.01% |
+8,234
| New | +$358K |
|
871
Rogers Corp
ROG
$1.44B
| $355K | ﹤0.01% |
1,310
+747
| +133% | +$202K |
|
872
BARK
BARK
$147M
| $352K | ﹤0.01% |
95,239
+49,979
| +110% | +$185K |
|
873
Gevo
GEVO
$392M
| $352K | ﹤0.01% |
75,217
-97,609
| -56% | -$457K |
|
874
KKR & Co
KKR
$124B
| $352K | ﹤0.01% |
6,027
+5,149
| +586% | +$301K |
|
875
Xponential Fitness
XPOF
$294M
| $352K | ﹤0.01% |
15,050
+10,275
| +215% | +$240K |
|