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 | |
|---|---|---|---|---|---|---|
776
PUT
Agnico Eagle Mines
AEM
$72.2B
| $8.46M | 0.01% |
41,700
-35,000
| -46% | -$7.29M |
|
777
PUT
VanEck Durable High Dividend ETF
DURA
$38.7M
| $8.42M | 0.01% |
40,200
-36,400
| -48% | -$1.33M |
|
778
CALL
Parker-Hannifin
PH
$124B
| $8.42M | 0.01% |
9,400
+6,600
| +236% | +$6.25M |
|
779
PUT
General Mills
GIS
$19.3B
| $8.41M | 0.01% |
226,000
-10,700
| -5% | -$465K |
|
|
METD
780
CALL
Direxion Daily META Bear 1X ETF
METD
$8.48M
| $8.41M | 0.01% |
179,500
-377,700
| -68% | -$6.12M |
|
781
CALL
C.H. Robinson
CHRW
$22.2B
| $8.4M | 0.01% |
50,600
+9,000
| +22% | +$1.61M |
|
782
PUT
NuScale Power
SMR
$2.81B
| $8.4M | 0.01% |
775,000
+120,200
| +18% | +$1.83M |
|
783
CALL
Proshares UltraShort Technology
REW
$3.48M
| $8.4M | 0.01% |
313,650
-311,400
| -50% | -$7.11M |
|
784
Alibaba
BABA
$270B
| $8.37M | 0.01% |
66,720
-161,380
| -71% | -$24.3M |
|
|
HUT
785
CALL
Hut 8
HUT
$12.3B
| $8.37M | 0.01% |
178,400
-217,300
| -55% | -$11.8M |
|
786
PUT
Cheniere Energy
LNG
$56.3B
| $8.34M | 0.01% |
29,400
+9,800
| +50% | +$2.26M |
|
787
CALL
TC Energy
TRP
$73.4B
| $8.34M | 0.01% |
133,200
+126,600
| +1,918% | +$7.64M |
|
788
CALL
DHT Holdings
DHT
$2.97B
| $8.33M | 0.01% |
456,000
+192,700
| +73% | +$3.07M |
|
789
CALL
Comcast
CMCSA
$79.8B
| $8.33M | 0.01% |
290,000
-2,270,300
| -89% | -$67.9M |
|
790
PUT
RH
RH
$3.32B
| $8.32M | 0.01% |
59,500
-62,900
| -51% | -$11.5M |
|
791
CALL
CAVA Group
CAVA
$7.17B
| $8.29M | 0.01% |
102,500
-346,600
| -77% | -$25.3M |
|
792
CALL
Weatherford International
WFRD
$6.31B
| $8.29M | 0.01% |
87,600
+83,500
| +2,037% | +$7.86M |
|
793
CALL
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $8.28M | 0.01% |
+143,100
| New | +$8.38M |
|
794
CALL
Calumet Specialty Products
CLMT
$3.65B
| $8.28M | 0.01% |
230,700
-98,200
| -30% | -$2.54M |
|
795
CALL
Ferrari
RACE
$63.3B
| $8.26M | 0.01% |
24,400
-16,500
| -40% | -$5.77M |
|
|
MASI
796
CALL
DELISTED
Masimo
MASI
| $8.25M | 0.01% |
+46,400
| New | +$7.28M |
|
797
PUT
Eos Energy Enterprises
EOSE
$1.24B
| $8.22M | 0.01% |
1,656,800
-1,111,000
| -40% | -$11.9M |
|
798
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$250M
| $8.2M | 0.01% |
+58,400
| New | +$2.82M |
|
799
CALL
Nutrien
NTR
$32.8B
| $8.18M | 0.01% |
108,400
+74,900
| +224% | +$5.34M |
|
|
USAR
800
CALL
USA Rare Earth Inc
USAR
$3.47B
| $8.16M | 0.01% |
539,100
+25,000
| +5% | +$485K |
|
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.