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
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
DX
851
Dynex Capital
DX
$1.65B
| $242K | ﹤0.01% |
19,811
+11,442
| +137% | +$140K |
|
852
Omnicom Group
OMC
$14.7B
| $242K | ﹤0.01% |
+3,365
| New | +$242K |
|
853
Morgan Stanley Direct Lending Fund
MSDL
$1.54B
| $240K | ﹤0.01% |
12,822
-5,082
| -28% | -$95.1K |
|
854
Telesat
TSAT
$312M
| $240K | ﹤0.01% |
9,857
-24,321
| -71% | -$592K |
|
855
Main Street Capital
MAIN
$5.97B
| $239K | ﹤0.01% |
4,047
-16,067
| -80% | -$949K |
|
856
Mobileye
MBLY
$11.3B
| $239K | ﹤0.01% |
13,328
-110,319
| -89% | -$1.98M |
|
|
COLO
857
Global X MSCI Colombia ETF
COLO
$101M
| $238K | ﹤0.01% |
+8,278
| New | +$238K |
|
858
Canadian Solar
CSIQ
$725M
| $237K | ﹤0.01% |
21,521
-138,952
| -87% | -$1.53M |
|
|
GMS
859
DELISTED
GMS Inc
GMS
| $236K | ﹤0.01% |
+2,175
| New | +$236K |
|
860
iShares Global Clean Energy ETF
ICLN
$1.58B
| $236K | ﹤0.01% |
18,027
+1,910
| +12% | +$25K |
|
861
Axos Financial
AX
$5.19B
| $235K | ﹤0.01% |
+3,101
| New | +$235K |
|
862
Bausch + Lomb
BLCO
$5.31B
| $235K | ﹤0.01% |
18,079
-6,716
| -27% | -$87.3K |
|
863
GoPro
GPRO
$258M
| $235K | ﹤0.01% |
311,340
-22,699
| -7% | -$17.1K |
|
864
TransUnion
TRU
$17.5B
| $234K | ﹤0.01% |
+2,662
| New | +$234K |
|
865
Hologic
HOLX
$14.6B
| $233K | ﹤0.01% |
3,576
-8,948
| -71% | -$583K |
|
866
VanEck High Yield Muni ETF
HYD
$3.37B
| $233K | ﹤0.01% |
4,642
+3,854
| +489% | +$193K |
|
867
Dorian LPG
LPG
$1.35B
| $233K | ﹤0.01% |
9,589
+7,951
| +485% | +$193K |
|
|
RZLV
868
Rezolve AI PLC Ordinary Shares
RZLV
$1.52B
| $233K | ﹤0.01% |
75,812
+73,959
| +3,991% | +$227K |
|
869
Oshkosh
OSK
$8.75B
| $232K | ﹤0.01% |
2,044
+334
| +20% | +$37.9K |
|
870
B. Riley Financial
RILY
$176M
| $232K | ﹤0.01% |
78,287
+3,303
| +4% | +$9.79K |
|
871
iShares Russell 1000 ETF
IWB
$44.2B
| $231K | ﹤0.01% |
+681
| New | +$231K |
|
872
Simplify Interest Rate Hedge ETF
PFIX
$152M
| $231K | ﹤0.01% |
4,382
+4,259
| +3,463% | +$225K |
|
873
Tyler Technologies
TYL
$23.6B
| $231K | ﹤0.01% |
+390
| New | +$231K |
|
|
WBA
874
DELISTED
Walgreens Boots Alliance
WBA
| $230K | ﹤0.01% |
20,059
-220,091
| -92% | -$2.52M |
|
875
United Parks & Resorts
PRKS
$2.77B
| $230K | ﹤0.01% |
4,891
+3,955
| +423% | +$186K |
|