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 | Miscellaneous | 98.3% |
| 2 | Technology | 0.62% |
| 3 | Communication Services | 0.22% |
| 4 | Consumer Discretionary | 0.21% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
5826
PUT
Azenta
AZTA
$1.68B
| $52.8K | ﹤0.01% |
2,500
+2,000
| +400% | +$59.8K |
2023 Q3
10 quarters
|
|
5827
PUT
Caleres
CAL
$416M
| $52.7K | ﹤0.01% |
5,000
-5,500
| -52% | -$65.6K |
2018 Q1
32 quarters
|
|
5828
CALL
Kforce
KFRC
$954M
| $52.6K | ﹤0.01% |
1,800
+500
| +38% | +$15.2K |
2025 Q3
2 quarters
|
|
5829
Invesco Aerospace & Defense ETF
PPA
$7.42B
| $52.5K | ﹤0.01% |
+317
| New | +$55.4K |
2026 Q1
0 quarters
|
|
|
CHCT
5830
PUT
Community Healthcare Trust
CHCT
$392M
| $52.4K | ﹤0.01% |
3,300
-55,600
| -94% | -$938K |
2023 Q3
10 quarters
|
|
5831
CALL
Telos
TLS
$318M
| $52.4K | ﹤0.01% |
12,500
+9,400
| +303% | +$44.4K |
2021 Q1
20 quarters
|
|
|
FINV
5832
CALL
FinVolution Group
FINV
$692M
| $52.2K | ﹤0.01% |
10,900
-256,900
| -96% | -$1.36M |
2024 Q2
7 quarters
|
|
5833
PUT
Compañía de Cervecerías Unidas
CCU
$1.93B
| $52.2K | ﹤0.01% |
4,600
+300
| +7% | +$4K |
2025 Q2
3 quarters
|
|
|
BBNX
5834
CALL
Beta Bionics
BBNX
$1.01B
| $52.1K | ﹤0.01% |
5,200
+5,000
| +2,500% | +$74K |
2025 Q4
1 quarter
|
|
5835
State Street Blackstone Senior Loan ETF
SRLN
$5.57B
| $52.1K | ﹤0.01% |
1,297
+528
| +69% | +$21.4K |
2025 Q4
1 quarter
|
|
5836
PUT
Gladstone Capital
GLAD
$431M
| $52K | ﹤0.01% |
3,000
+600
| +25% | +$11.5K |
2019 Q2
27 quarters
|
|
5837
CALL
Entravision Communication
EVC
$689M
| $52K | ﹤0.01% |
+17,500
| New | +$53.7K |
2026 Q1
0 quarters
|
|
|
SJT
5838
PUT
San Juan Basin Royalty Trust
SJT
$174M
| $51.9K | ﹤0.01% |
10,800
-4,200
| -28% | -$23K |
2025 Q1
4 quarters
|
|
5839
Breakwave Dry Bulk Shipping ETF
BDRY
$33.6M
| $51.9K | ﹤0.01% |
5,203
+4,709
| +953% | +$49.7K |
2022 Q2
15 quarters
|
|
5840
PUT
Sanmina
SANM
$12.1B
| $51.9K | ﹤0.01% |
400
+200
| +100% | +$29.4K |
2025 Q3
2 quarters
|
|
5841
CALL
Stantec
STN
$7.6B
| $51.8K | ﹤0.01% |
+600
| New | +$56.4K |
2026 Q1
0 quarters
|
|
5842
PUT
Avery Dennison
AVY
$13B
| $51.8K | ﹤0.01% |
300
+200
| +200% | +$36.7K |
2021 Q1
20 quarters
|
|
5843
First Trust SMID Cap Rising Dividend Achievers ETF
SDVY
$11B
| $51.6K | ﹤0.01% |
+1,309
| New | +$53.2K |
2026 Q1
0 quarters
|
|
5844
CALL
Park Hotels & Resorts
PK
$3.13B
| $51.6K | ﹤0.01% |
4,900
-2,500
| -34% | -$27.6K |
2019 Q3
26 quarters
|
|
|
MCW
5845
CALL
DELISTED
Mister Car Wash
MCW
| $51.6K | ﹤0.01% |
7,400
+200
| +3% | +$1.28K |
2025 Q4
1 quarter
|
|
5846
CALL
Mid Penn Bancorp
MPB
$917M
| $51.5K | ﹤0.01% |
+1,600
| New | +$51.8K |
2026 Q1
0 quarters
|
|
5847
CALL
UL Solutions
ULS
$13.5B
| $51.4K | ﹤0.01% |
600
-19,700
| -97% | -$1.55M |
2025 Q1
4 quarters
|
|
5848
CALL
Village Farms International
VFF
$356M
| $51.4K | ﹤0.01% |
18,100
-98,200
| -84% | -$319K |
2025 Q2
3 quarters
|
|
5849
PUT
Brookfield Infrastructure
BIPC
$4.53B
| $51.4K | ﹤0.01% |
+1,300
| New | +$59.6K |
2026 Q1
0 quarters
|
|
5850
Simplify Managed Futures Strategy ETF
CTA
$1.43B
| $51.4K | ﹤0.01% |
+1,700
| New | +$49.4K |
2026 Q1
0 quarters
|
|
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's Q1 2026 filing shows 2,157 new, 2,651 increased, 3,926 reduced and 1,574 closed positions. Its largest new stake was Amazon: 764,884 shares worth $159M. The largest sale was Apple, an estimated $174M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Technology and Communication Services.
- 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 2,157 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.