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 | |
|---|---|---|---|---|---|---|
8201
PUT
Annovis Bio
ANVS
$74M
| $2.9K | ﹤0.01% |
1,300
-14,800
| -92% | -$40.6K |
|
8202
iShares MSCI BIC ETF
BKF
$76.2M
| $2.89K | ﹤0.01% |
+71
| New | +$3.09K |
|
8203
CALL
Outlook Therapeutics
OTLK
$247M
| $2.88K | ﹤0.01% |
14,000
-109,600
| -89% | -$47.4K |
|
8204
PUT
Brixmor Property Group
BRX
$10B
| $2.88K | ﹤0.01% |
100
-1,000
| -91% | -$28.2K |
|
8205
CALL
Evolus
EOLS
$379M
| $2.88K | ﹤0.01% |
700
-3,300
| -83% | -$16K |
|
8206
RCI Hospitality Holdings
RICK
$202M
| $2.87K | ﹤0.01% |
126
-26
| -17% | -$612 |
|
8207
PUT
Lexeo Therapeutics
LXEO
$378M
| $2.87K | ﹤0.01% |
500
+200
| +67% | +$1.42K |
|
8208
PUT
Cinemark Holdings
CNK
$3.8B
| $2.85K | ﹤0.01% |
100
-43,400
| -100% | -$1.11M |
|
8209
CALL
Prudential
PUK
$36.6B
| $2.84K | ﹤0.01% |
100
| – | – |
|
|
VOXR
8210
Vox Royalty Corp
VOXR
$305M
| $2.84K | ﹤0.01% |
+542
| New | +$2.9K |
|
|
WLTH
8211
Wealthfront Corp
WLTH
$1.35B
| $2.84K | ﹤0.01% |
+307
| New | +$2.81K |
|
8212
CALL
DocGo
DCGO
$66.7M
| $2.83K | ﹤0.01% |
4,500
-3,300
| -42% | -$2.48K |
|
8213
CALL
Genie Energy
GNE
$379M
| $2.83K | ﹤0.01% |
+200
| New | +$2.84K |
|
8214
La-Z-Boy
LZB
$1.57B
| $2.83K | ﹤0.01% |
88
-486
| -85% | -$17.6K |
|
8215
Intrepid Potash
IPI
$467M
| $2.82K | ﹤0.01% |
+66
| New | +$2.37K |
|
8216
Axogen
AXGN
$2.09B
| $2.82K | ﹤0.01% |
+85
| New | +$2.76K |
|
8217
PUT
Journey Medical
DERM
$197M
| $2.81K | ﹤0.01% |
600
-600
| -50% | -$4.66K |
|
8218
CALL
GH Research
GHRS
$1.96B
| $2.81K | ﹤0.01% |
200
| – | – |
|
8219
PUT
TFS Financial
TFSL
$5.13B
| $2.81K | ﹤0.01% |
+200
| New | +$2.83K |
|
8220
Spruce Power Holding Corp
SPRU
$42.6M
| $2.81K | ﹤0.01% |
685
-910
| -57% | -$4.22K |
|
|
FEAC
8221
Fidelity Enhanced U.S. All-Cap Equity ETF
FEAC
$21.2M
| $2.81K | ﹤0.01% |
+101
| New | +$2.93K |
|
|
INVX
8222
Innovex International
INVX
$1.91B
| $2.8K | ﹤0.01% |
115
-301
| -72% | -$7.56K |
|
8223
Pediatrix Medical
MD
$2.11B
| $2.8K | ﹤0.01% |
+131
| New | +$2.73K |
|
8224
Global X SuperDividend REIT ETF
SRET
$238M
| $2.8K | ﹤0.01% |
+132
| New | +$2.94K |
|
8225
PUT
Delcath Systems
DCTH
$435M
| $2.78K | ﹤0.01% |
300
-16,300
| -98% | -$158K |
|
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.