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 | |
|---|---|---|---|---|---|---|
301
Floor & Decor
FND
$9.42B
| $1.32M | ﹤0.01% |
+16,353
| New | +$1.32M |
|
302
Nova
NVMI
$7.58B
| $1.31M | ﹤0.01% |
7,129
+5,105
| +252% | +$941K |
|
|
SII
303
Sprott
SII
$1.75B
| $1.31M | ﹤0.01% |
29,228
+16,795
| +135% | +$753K |
|
304
Rush Street Interactive
RSI
$2.02B
| $1.31M | ﹤0.01% |
+122,208
| New | +$1.31M |
|
305
Braze
BRZE
$3.5B
| $1.3M | ﹤0.01% |
36,054
+25,643
| +246% | +$925K |
|
306
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.24B
| $1.29M | ﹤0.01% |
+44,052
| New | +$1.29M |
|
307
National Grid
NGG
$69.6B
| $1.28M | ﹤0.01% |
+20,154
| New | +$1.28M |
|
308
Equity Residential
EQR
$25.5B
| $1.26M | ﹤0.01% |
17,613
+5,234
| +42% | +$374K |
|
309
Planet Fitness
PLNT
$8.77B
| $1.26M | ﹤0.01% |
13,049
-4,193
| -24% | -$405K |
|
310
Protagonist Therapeutics
PTGX
$3.77B
| $1.25M | ﹤0.01% |
25,934
+20,447
| +373% | +$989K |
|
311
Clear Secure
YOU
$3.35B
| $1.25M | ﹤0.01% |
+48,416
| New | +$1.25M |
|
312
Trade Desk
TTD
$25.5B
| $1.25M | ﹤0.01% |
+22,872
| New | +$1.25M |
|
313
Genmab
GMAB
$16.9B
| $1.24M | ﹤0.01% |
+63,476
| New | +$1.24M |
|
|
NNDM
314
Nano Dimension
NNDM
$293M
| $1.24M | ﹤0.01% |
781,578
+300,223
| +62% | +$477K |
|
315
ProShares UltraPro Short S&P 500
SPXU
$523M
| $1.24M | ﹤0.01% |
48,683
+37,574
| +338% | +$959K |
|
316
ProShares Ultra QQQ
QLD
$9.07B
| $1.22M | ﹤0.01% |
13,773
+13,045
| +1,792% | +$1.16M |
|
317
Futu Holdings
FUTU
$26.1B
| $1.22M | ﹤0.01% |
11,951
-40,716
| -77% | -$4.17M |
|
318
RTX Corp
RTX
$211B
| $1.22M | ﹤0.01% |
9,240
-2,354
| -20% | -$312K |
|
319
Zimmer Biomet
ZBH
$20.9B
| $1.22M | ﹤0.01% |
10,771
+712
| +7% | +$80.6K |
|
320
Bath & Body Works
BBWI
$6.06B
| $1.21M | ﹤0.01% |
+40,024
| New | +$1.21M |
|
321
Kimbell Royalty Partners
KRP
$1.25B
| $1.21M | ﹤0.01% |
+86,303
| New | +$1.21M |
|
322
Shift4
FOUR
$6.01B
| $1.21M | ﹤0.01% |
14,761
+7,458
| +102% | +$609K |
|
323
Galicia Financial Group
GGAL
$6.44B
| $1.2M | ﹤0.01% |
+21,956
| New | +$1.2M |
|
324
Dynatrace
DT
$15.1B
| $1.19M | ﹤0.01% |
+25,258
| New | +$1.19M |
|
325
FMC
FMC
$4.72B
| $1.19M | ﹤0.01% |
+28,206
| New | +$1.19M |
|