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 | |
|---|---|---|---|---|---|---|
3376
PUT
Sunoco
SUN
$14.3B
| $455K | ﹤0.01% |
7,000
-24,400
| -78% | -$1.48M |
|
3377
CALL
Amylyx Pharmaceuticals
AMLX
$2.31B
| $455K | ﹤0.01% |
32,700
+4,500
| +16% | +$63.3K |
|
3378
CALL
TripAdvisor
TRIP
$1.65B
| $454K | ﹤0.01% |
42,600
-420,100
| -91% | -$4.89M |
|
3379
PUT
Helmerich & Payne
HP
$3.37B
| $454K | ﹤0.01% |
12,600
-14,700
| -54% | -$501K |
|
3380
United Natural Foods
UNFI
$3.01B
| $454K | ﹤0.01% |
10,065
-30,515
| -75% | -$1.17M |
|
3381
CALL
Schrodinger
SDGR
$1.15B
| $453K | ﹤0.01% |
39,900
-21,800
| -35% | -$301K |
|
3382
CALL
Asana
ASAN
$1.83B
| $453K | ﹤0.01% |
70,800
-39,300
| -36% | -$346K |
|
3383
CALL
Vertex
VERX
$2.04B
| $453K | ﹤0.01% |
38,100
-1,200
| -3% | -$18.7K |
|
3384
CALL
InterDigital
IDCC
$7.84B
| $453K | ﹤0.01% |
1,500
-1,000
| -40% | -$340K |
|
3385
CALL
Goldman Sachs Innovate Equity ETF
GINN
$204M
| $453K | ﹤0.01% |
9,100
+2,700
| +42% | +$196K |
|
3386
iShares Latin America 40 ETF
ILF
$3.85B
| $452K | ﹤0.01% |
12,738
+6,039
| +90% | +$209K |
|
3387
PUT
B&G Foods
BGS
$293M
| $452K | ﹤0.01% |
93,900
+69,600
| +286% | +$337K |
|
3388
CALL
Bioventus
BVS
$893M
| $451K | ﹤0.01% |
49,400
+32,400
| +191% | +$272K |
|
3389
PUT
Absci
ABSI
$1.29B
| $451K | ﹤0.01% |
150,300
+126,000
| +519% | +$365K |
|
|
STEX
3390
CALL
Streamex Corp
STEX
$78.1M
| $451K | ﹤0.01% |
398,900
+381,600
| +2,206% | +$970K |
|
3391
Core & Main
CNM
$8.15B
| $450K | ﹤0.01% |
+9,116
| New | +$491K |
|
3392
Manchester United
MANU
$4.04B
| $449K | ﹤0.01% |
26,720
-16,295
| -38% | -$278K |
|
3393
VICI Properties
VICI
$29B
| $449K | ﹤0.01% |
+16,443
| New | +$471K |
|
3394
PUT
Weibo
WB
$1.99B
| $449K | ﹤0.01% |
51,300
-44,900
| -47% | -$451K |
|
3395
CALL
Trinity Capital Inc.
TRIN
$1.56B
| $449K | ﹤0.01% |
30,500
+21,000
| +221% | +$324K |
|
3396
PUT
W.P. Carey
WPC
$16.9B
| $449K | ﹤0.01% |
6,600
-6,700
| -50% | -$470K |
|
3397
Freedom 100 Emerging Markets ETF
FRDM
$3.25B
| $448K | ﹤0.01% |
+8,203
| New | +$470K |
|
|
DYNC
3398
PUT
Dynamix Corp
DYNC
$240M
| $448K | ﹤0.01% |
+42,800
| New | +$444K |
|
3399
PUT
Lionsgate Studios
LION
$3.98B
| $448K | ﹤0.01% |
46,700
-28,700
| -38% | -$265K |
|
|
TPC
3400
PUT
Tutor Perini Cor
TPC
$4.38B
| $448K | ﹤0.01% |
5,800
-15,500
| -73% | -$1.19M |
|
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.