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 | |
|---|---|---|---|---|---|---|
7351
Alto Neuroscience
ANRO
$1.01B
| $10.1K | ﹤0.01% |
+450
| New | +$8.34K |
|
7352
LifeVantage
LFVN
$79M
| $10.1K | ﹤0.01% |
2,341
+312
| +15% | +$1.63K |
|
7353
VanEck Mortgage REIT Income ETF
MORT
$374M
| $10.1K | ﹤0.01% |
985
+748
| +316% | +$7.99K |
|
7354
First Trust Global Wind Energy ETF
FAN
$285M
| $10K | ﹤0.01% |
406
-456
| -53% | -$10.5K |
|
|
PINE
7355
Alpine Income Property Trust
PINE
$348M
| $10K | ﹤0.01% |
+558
| New | +$10.4K |
|
7356
Cambria Tail Risk ETF
TAIL
$145M
| $10K | ﹤0.01% |
857
-1,408
| -62% | -$16.3K |
|
7357
PUT
Excelerate Energy
EE
$1.24B
| $10K | ﹤0.01% |
+300
| New | +$10.8K |
|
7358
iShares US Insurance ETF
IAK
$503M
| $10K | ﹤0.01% |
+78
| New | +$10.3K |
|
7359
PUT
Dole
DOLE
$1.36B
| $10K | ﹤0.01% |
700
+200
| +40% | +$3.03K |
|
7360
PUT
Kayne Anderson Energy Infrastructure Fund
KYN
$2.5B
| $10K | ﹤0.01% |
+700
| New | +$9.4K |
|
|
SOBO
7361
PUT
South Bow Corp
SOBO
$7.82B
| $10K | ﹤0.01% |
300
| – | – |
|
7362
PUT
Cathay General Bancorp
CATY
$4.16B
| $9.97K | ﹤0.01% |
+200
| New | +$10.1K |
|
7363
Life Time Group Holdings
LTH
$9.41B
| $9.97K | ﹤0.01% |
+370
| New | +$10.2K |
|
7364
PUT
Finance of America Companies
FOA
$207M
| $9.96K | ﹤0.01% |
600
+400
| +200% | +$8.27K |
|
|
AISP
7365
PUT
Airship AI Holdings
AISP
$71.3M
| $9.94K | ﹤0.01% |
4,400
-1,400
| -24% | -$3.97K |
|
7366
CALL
Consolidated Water Co
CWCO
$464M
| $9.94K | ﹤0.01% |
300
-2,200
| -88% | -$78.9K |
|
7367
PUT
MVB Financial
MVBF
$377M
| $9.93K | ﹤0.01% |
400
+300
| +300% | +$8.04K |
|
7368
CALL
Ultrapar
UGP
$6.71B
| $9.92K | ﹤0.01% |
+1,800
| New | +$8.71K |
|
7369
Dyadic International
DYAI
$44.1M
| $9.9K | ﹤0.01% |
12,078
+11,990
| +13,625% | +$10.1K |
|
|
WDCX
7370
Tradr 2X Long WDC Daily ETF
WDCX
$194M
| $9.9K | ﹤0.01% |
+1,092
| New | +$11.2K |
|
7371
VirTra
VTSI
$33.9M
| $9.88K | ﹤0.01% |
2,664
+504
| +23% | +$2.26K |
|
7372
PUT
Core & Main
CNM
$8.2B
| $9.88K | ﹤0.01% |
200
-1,800
| -90% | -$96.9K |
|
|
MTLS
7373
CALL
Materialise
MTLS
$380M
| $9.88K | ﹤0.01% |
2,000
-300
| -13% | -$1.62K |
|
7374
CALL
Barings BDC
BBDC
$878M
| $9.88K | ﹤0.01% |
1,200
+1,000
| +500% | +$8.77K |
|
7375
Malibu Boats
MBUU
$551M
| $9.88K | ﹤0.01% |
381
+236
| +163% | +$7.04K |
|
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.