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 | |
|---|---|---|---|---|---|---|
726
Cullen/Frost Bankers
CFR
$8.13B
| $347K | ﹤0.01% |
2,707
+1,595
| +143% | +$204K |
|
727
Invesco CurrencyShares Australian Dollar Trust
FXA
$78.7M
| $347K | ﹤0.01% |
+5,331
| New | +$347K |
|
728
Elevance Health
ELV
$69.1B
| $346K | ﹤0.01% |
891
-908
| -50% | -$353K |
|
729
Peloton Interactive
PTON
$3.23B
| $342K | ﹤0.01% |
49,409
-58,268
| -54% | -$403K |
|
730
CVR Energy
CVI
$3.23B
| $341K | ﹤0.01% |
+12,714
| New | +$341K |
|
731
Best Buy
BBY
$16.1B
| $339K | ﹤0.01% |
+5,055
| New | +$339K |
|
732
Magnolia Oil & Gas
MGY
$4.45B
| $339K | ﹤0.01% |
+15,101
| New | +$339K |
|
733
Western Alliance Bancorporation
WAL
$9.85B
| $339K | ﹤0.01% |
4,355
-3,444
| -44% | -$268K |
|
734
Sundial Growers
SNDL
$612M
| $338K | ﹤0.01% |
279,500
-46,475
| -14% | -$56.2K |
|
735
iShares MSCI World ETF
URTH
$5.67B
| $338K | ﹤0.01% |
+1,997
| New | +$338K |
|
736
American Superconductor
AMSC
$2.33B
| $337K | ﹤0.01% |
9,197
-4,311
| -32% | -$158K |
|
737
Globus Medical
GMED
$7.89B
| $337K | ﹤0.01% |
+5,720
| New | +$337K |
|
738
SGHC Ltd
SGHC
$6.62B
| $335K | ﹤0.01% |
30,610
+22,332
| +270% | +$244K |
|
739
Unusual Machines
UMAC
$304M
| $334K | ﹤0.01% |
+38,975
| New | +$334K |
|
|
NMAX
740
Newsmax, Inc.
NMAX
$1.59B
| $334K | ﹤0.01% |
+22,083
| New | +$334K |
|
741
Logitech
LOGI
$15.9B
| $333K | ﹤0.01% |
+3,698
| New | +$333K |
|
742
Roundhill S&P 500 0DTE Covered Call Strategy ETF
XDTE
$422M
| $333K | ﹤0.01% |
7,555
+7,454
| +7,380% | +$329K |
|
743
Couchbase
BASE
$1.35B
| $332K | ﹤0.01% |
13,632
-15,157
| -53% | -$369K |
|
744
Fidus Investment
FDUS
$755M
| $332K | ﹤0.01% |
+16,458
| New | +$332K |
|
745
Invesco
IVZ
$9.9B
| $330K | ﹤0.01% |
20,952
+6,362
| +44% | +$100K |
|
746
Sinclair Inc
SBGI
$931M
| $328K | ﹤0.01% |
+23,798
| New | +$328K |
|
747
Soho House & Co
SHCO
$1.73B
| $328K | ﹤0.01% |
44,735
+15,973
| +56% | +$117K |
|
748
Vanguard Tax-Exempt Bond Index Fund
VTEB
$38.7B
| $327K | ﹤0.01% |
6,670
+4,696
| +238% | +$230K |
|
749
Capital Southwest
CSWC
$1.26B
| $326K | ﹤0.01% |
14,793
+2,895
| +24% | +$63.8K |
|
750
Gaotu Techedu
GOTU
$867M
| $325K | ﹤0.01% |
90,181
-32,958
| -27% | -$119K |
|