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 | |
|---|---|---|---|---|---|---|
6151
YieldMax Universe Fund of Option Income ETFs
YMAX
$399M
| $38K | ﹤0.01% |
4,852
+1,671
| +53% | +$14.9K |
|
6152
Invesco California AMT-Free Municipal Bond ETF
PWZ
$1.15B
| $38K | ﹤0.01% |
+1,591
| New | +$38.5K |
|
6153
PUT
State Street
STT
$50.9B
| $38K | ﹤0.01% |
300
-13,100
| -98% | -$1.68M |
|
6154
Ibotta
IBTA
$635M
| $37.8K | ﹤0.01% |
1,262
-847
| -40% | -$19.8K |
|
|
NEXN
6155
CALL
Nexxen International
NEXN
$541M
| $37.8K | ﹤0.01% |
+5,800
| New | +$37.1K |
|
6156
PUT
Mach Natural Resources
MNR
$2.19B
| $37.8K | ﹤0.01% |
+2,700
| New | +$34K |
|
|
ACH
6157
Accendra Health
ACH
$242M
| $37.8K | ﹤0.01% |
16,576
-13,367
| -45% | -$30.8K |
|
6158
CALL
Sun Communities
SUI
$14.7B
| $37.8K | ﹤0.01% |
300
-200
| -40% | -$25.8K |
|
|
ACR
6159
ACRES Commercial Realty
ACR
$125M
| $37.8K | ﹤0.01% |
+1,955
| New | +$37.6K |
|
6160
PUT
National Storage Affiliates Trust
NSA
$3.37B
| $37.7K | ﹤0.01% |
1,000
+100
| +11% | +$3.38K |
|
6161
GraniteShares 2x Long MSFT Daily ETF
MSFL
$127M
| $37.7K | ﹤0.01% |
2,473
+2,379
| +2,531% | +$47.7K |
|
|
MSTZ
6162
T-Rex 2X Inverse MSTR Daily Target ETF
MSTZ
$92.2M
| $37.6K | ﹤0.01% |
+3,011
| New | +$40.2K |
|
6163
Intellicheck
IDN
$75.3M
| $37.5K | ﹤0.01% |
+5,359
| New | +$29.1K |
|
6164
PUT
Nano X Imaging
NNOX
$68.1M
| $37.5K | ﹤0.01% |
16,500
-33,400
| -67% | -$87.9K |
|
6165
EverQuote
EVER
$880M
| $37.4K | ﹤0.01% |
2,428
-1,563
| -39% | -$29.6K |
|
|
PVLA
6166
PUT
Palvella Therapeutics
PVLA
$2.04B
| $37.4K | ﹤0.01% |
+300
| New | +$31.3K |
|
6167
PUT
Boston Omaha
BOC
$427M
| $37.4K | ﹤0.01% |
3,200
-6,200
| -66% | -$76.5K |
|
|
GSOL
6168
Grayscale Solana Staking ETF
GSOL
$97.1M
| $37.3K | ﹤0.01% |
6,091
+6,090
| +609,000% | +$45.8K |
|
6169
CDW
CDW
$16.6B
| $37.3K | ﹤0.01% |
+308
| New | +$38.9K |
|
6170
PUT
Upwork
UPWK
$1.11B
| $37.3K | ﹤0.01% |
3,400
-44,800
| -93% | -$705K |
|
6171
CALL
LG Display
LPL
$3.29B
| $37.2K | ﹤0.01% |
9,600
-4,600
| -32% | -$19.4K |
|
6172
PUT
Fidelity Enhanced Large Cap Value ETF
FELV
$3.19B
| $37.2K | ﹤0.01% |
1,200
+200
| +20% | +$7.16K |
|
|
IRE
6173
Defiance Daily Target 2x Long IREN ETF
IRE
$294M
| $37K | ﹤0.01% |
2,839
+2,088
| +278% | +$60.3K |
|
6174
CALL
Takeda Pharmaceutical
TAK
$53.9B
| $37K | ﹤0.01% |
+2,000
| New | +$35.1K |
|
6175
Asure Software
ASUR
$218M
| $37K | ﹤0.01% |
4,301
-4,317
| -50% | -$38.1K |
|
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.