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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
Nordic American Tanker
NAT
$684M
| $728K | ﹤0.01% |
296,234
+82,493
| +39% | +$203K |
|
452
Arrowhead Research
ARWR
$3.93B
| $727K | ﹤0.01% |
57,092
+40,785
| +250% | +$519K |
|
453
Cytokinetics
CYTK
$6.08B
| $720K | ﹤0.01% |
+17,934
| New | +$720K |
|
454
Keros Therapeutics
KROS
$623M
| $718K | ﹤0.01% |
70,512
+63,125
| +855% | +$643K |
|
455
Herbalife
HLF
$968M
| $716K | ﹤0.01% |
+83,038
| New | +$716K |
|
456
GraniteShares 2x Long AMD Daily ETF
AMDL
$499M
| $712K | ﹤0.01% |
138,623
+124,874
| +908% | +$641K |
|
457
Rumble
RUM
$2.51B
| $699K | ﹤0.01% |
98,924
-41,595
| -30% | -$294K |
|
|
TUYA
458
Tuya Inc
TUYA
$1.54B
| $696K | ﹤0.01% |
230,025
+224,026
| +3,734% | +$678K |
|
459
iShares 1-3 Year Treasury Bond ETF
SHY
$24.5B
| $695K | ﹤0.01% |
8,405
-2,628
| -24% | -$217K |
|
460
Genius Sports
GENI
$3.04B
| $683K | ﹤0.01% |
68,261
+23,223
| +52% | +$232K |
|
461
Appian
APPN
$2.38B
| $681K | ﹤0.01% |
23,652
+20,135
| +573% | +$580K |
|
|
FL
462
DELISTED
Foot Locker
FL
| $681K | ﹤0.01% |
48,357
+47,540
| +5,819% | +$669K |
|
463
Peloton Interactive
PTON
$3.19B
| $680K | ﹤0.01% |
107,677
-169,600
| -61% | -$1.07M |
|
464
NextNav
NN
$2.2B
| $676K | ﹤0.01% |
55,551
-84,039
| -60% | -$1.02M |
|
465
Franklin Resources
BEN
$12.8B
| $669K | ﹤0.01% |
34,775
+31,447
| +945% | +$605K |
|
466
Monolithic Power Systems
MPWR
$41.2B
| $667K | ﹤0.01% |
+1,151
| New | +$667K |
|
467
Vanguard FTSE Europe ETF
VGK
$27B
| $667K | ﹤0.01% |
9,502
+5,442
| +134% | +$382K |
|
468
Biohaven
BHVN
$1.52B
| $666K | ﹤0.01% |
+27,728
| New | +$666K |
|
469
Allegro MicroSystems
ALGM
$5.69B
| $665K | ﹤0.01% |
+26,468
| New | +$665K |
|
470
Bank OZK
OZK
$5.92B
| $664K | ﹤0.01% |
+15,298
| New | +$664K |
|
471
Perion Network
PERI
$412M
| $658K | ﹤0.01% |
80,903
+61,295
| +313% | +$499K |
|
472
Cracker Barrel
CBRL
$1.12B
| $655K | ﹤0.01% |
16,878
+11,284
| +202% | +$438K |
|
|
HUT
473
Hut 8
HUT
$3.27B
| $653K | ﹤0.01% |
+56,241
| New | +$653K |
|
474
MakeMyTrip
MMYT
$9.3B
| $652K | ﹤0.01% |
+6,663
| New | +$652K |
|
475
Amplify Energy
AMPY
$159M
| $651K | ﹤0.01% |
+174,136
| New | +$651K |
|