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 | |
|---|---|---|---|---|---|---|
7301
CALL
Unisys
UIS
$246M
| $10.8K | ﹤0.01% |
5,200
+2,500
| +93% | +$6.28K |
|
|
RAPP
7302
Rapport Therapeutics
RAPP
$1.99B
| $10.8K | ﹤0.01% |
344
+317
| +1,174% | +$8.92K |
|
|
PBT
7303
PUT
Permian Basin Royalty Trust
PBT
$1.38B
| $10.8K | ﹤0.01% |
500
-30,900
| -98% | -$602K |
|
7304
PUT
Duluth Holdings
DLTH
$168M
| $10.7K | ﹤0.01% |
+3,400
| New | +$8.19K |
|
7305
Global X MLP & Energy Infrastructure ETF
MLPX
$3.67B
| $10.7K | ﹤0.01% |
145
-363
| -71% | -$24.7K |
|
7306
PUT
Hayward Holdings
HAYW
$3.08B
| $10.7K | ﹤0.01% |
800
+100
| +14% | +$1.56K |
|
|
AGEN
7307
PUT
Agenus
AGEN
$243M
| $10.7K | ﹤0.01% |
3,200
+3,000
| +1,500% | +$9.96K |
|
7308
PUT
East-West Bancorp
EWBC
$18B
| $10.7K | ﹤0.01% |
+100
| New | +$11.3K |
|
7309
CALL
Loews
L
$23.5B
| $10.7K | ﹤0.01% |
100
-2,200
| -96% | -$235K |
|
7310
Organogenesis Holdings
ORGO
$322M
| $10.7K | ﹤0.01% |
4,495
-7,121
| -61% | -$24.7K |
|
7311
PUT
Orchestra BioMed
OBIO
$217M
| $10.6K | ﹤0.01% |
2,500
+800
| +47% | +$3.41K |
|
7312
Gilat Satellite Networks
GILT
$866M
| $10.6K | ﹤0.01% |
+705
| New | +$11.7K |
|
|
ORC
7313
Orchid Island Capital
ORC
$1.35B
| $10.6K | ﹤0.01% |
1,504
-14,574
| -91% | -$110K |
|
|
KLC
7314
CALL
KinderCare Learning Companies
KLC
$591M
| $10.6K | ﹤0.01% |
+4,800
| New | +$18.1K |
|
7315
Oil States International
OIS
$529M
| $10.5K | ﹤0.01% |
906
+862
| +1,959% | +$8.9K |
|
7316
Direxion Daily Regional Banks Bull 3X ETF
DPST
$449M
| $10.5K | ﹤0.01% |
109
-30,139
| -100% | -$3.35M |
|
7317
PUT
Hagerty
HGTY
$1.16B
| $10.5K | ﹤0.01% |
1,000
-600
| -38% | -$7K |
|
7318
PUT
Invivyd
IVVD
$185M
| $10.5K | ﹤0.01% |
8,100
-48,100
| -86% | -$88.3K |
|
|
TIC
7319
PUT
TIC Solutions Inc
TIC
$1.57B
| $10.5K | ﹤0.01% |
1,600
-4,100
| -72% | -$38.6K |
|
7320
First Financial Bankshares
FFIN
$4.96B
| $10.5K | ﹤0.01% |
357
-263
| -42% | -$8.29K |
|
|
SOLZ
7321
Solana ETF
SOLZ
$93.1M
| $10.5K | ﹤0.01% |
+1,255
| New | +$13K |
|
7322
ProShares Trust UltraShort MSCI Japan
EWV
$5.76M
| $10.5K | ﹤0.01% |
465
+366
| +370% | +$8.07K |
|
|
IREG
7323
CALL
Leverage Shares 2X Long IREN Daily ETF
IREG
$24.7M
| $10.5K | ﹤0.01% |
+600
| New | +$12.2K |
|
7324
PUT
AvePoint
AVPT
$2.52B
| $10.5K | ﹤0.01% |
1,100
+500
| +83% | +$5.63K |
|
|
HOOY
7325
YieldMax HOOD Option Income Strategy ETF
HOOY
$138M
| $10.4K | ﹤0.01% |
375
-2,935
| -89% | -$105K |
|
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.