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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
7026
Lightwave Logic
LWLG
$1.06B
| $14.5K | ﹤0.01% |
2,063
-67,108
| -97% | -$318K |
|
|
VLRS
7027
PUT
Controladora Vuela Compania de Aviacion
VLRS
$892M
| $14.5K | ﹤0.01% |
+2,000
| New | +$17.5K |
|
7028
Smith & Nephew
SNN
$12.7B
| $14.5K | ﹤0.01% |
+455
| New | +$15.5K |
|
7029
PUT
BTCS Inc
BTCS
$53.3M
| $14.5K | ﹤0.01% |
10,400
+1,700
| +20% | +$3.47K |
|
7030
PUT
Sana Biotechnology
SANA
$879M
| $14.4K | ﹤0.01% |
5,000
-11,600
| -70% | -$45.7K |
|
7031
PUT
Apyx Medical
APYX
$171M
| $14.4K | ﹤0.01% |
3,900
+2,500
| +179% | +$9.34K |
|
7032
PUT
CION Investment
CION
$307M
| $14.4K | ﹤0.01% |
+2,100
| New | +$17.6K |
|
7033
Financial Institutions
FISI
$774M
| $14.4K | ﹤0.01% |
453
+63
| +16% | +$2.03K |
|
7034
CALL
Arrow Electronics
ARW
$10.5B
| $14.3K | ﹤0.01% |
100
-1,800
| -95% | -$247K |
|
7035
CALL
StepStone Group
STEP
$3.51B
| $14.3K | ﹤0.01% |
+300
| New | +$17.3K |
|
7036
PUT
Twist Bioscience
TWST
$5.45B
| $14.3K | ﹤0.01% |
300
-2,700
| -90% | -$121K |
|
7037
Vanguard International High Dividend Yield ETF
VYMI
$20.2B
| $14.2K | ﹤0.01% |
+151
| New | +$14.4K |
|
7038
PUT
Agilysys
AGYS
$3B
| $14.2K | ﹤0.01% |
+200
| New | +$17.4K |
|
7039
PUT
Cactus
WHD
$3.72B
| $14.2K | ﹤0.01% |
300
-7,800
| -96% | -$409K |
|
|
NEWP
7040
New Pacific Metals
NEWP
$803M
| $14.2K | ﹤0.01% |
3,431
-29,669
| -90% | -$120K |
|
7041
Invesco China Technology ETF
CQQQ
$3.09B
| $14.2K | ﹤0.01% |
+308
| New | +$16.2K |
|
7042
Star Group
SGU
$427M
| $14.2K | ﹤0.01% |
+1,154
| New | +$14.6K |
|
7043
CALL
Broadwind
BWEN
$119M
| $14.1K | ﹤0.01% |
6,800
-6,400
| -48% | -$17.4K |
|
|
COIW
7044
Roundhill COIN WeeklyPay ETF
COIW
$39.8M
| $14.1K | ﹤0.01% |
1,159
-215
| -16% | -$3.36K |
|
|
XRPT
7045
Volatility Shares Trust XRP 2X ETF
XRPT
$61.2M
| $14.1K | ﹤0.01% |
351
+217
| +162% | +$15.2K |
|
7046
Cytek Biosciences
CTKB
$591M
| $14.1K | ﹤0.01% |
3,226
+1,223
| +61% | +$5.77K |
|
|
TDAY
7047
USA Today Co
TDAY
$1.24B
| $14.1K | ﹤0.01% |
1,995
-4,856
| -71% | -$29.7K |
|
|
RWT
7048
CALL
Redwood Trust
RWT
$626M
| $14K | ﹤0.01% |
2,500
| – | – |
|
7049
CALL
Amtech Systems
ASYS
$285M
| $14K | ﹤0.01% |
1,200
+1,100
| +1,100% | +$14.8K |
|
7050
PUT
Intellicheck
IDN
$78M
| $14K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$10.3K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.