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 |
iShares Russell 2000 ETF
IWM
|
+$146M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$108M |
| 3 |
Apple
AAPL
|
+$62.9M |
| 4 |
Tesla
TSLA
|
+$51.9M |
| 5 |
Micron Technology
MU
|
+$39.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$108M |
| 2 |
Meta Platforms (Facebook)
META
|
+$104M |
| 3 |
Advanced Micro Devices
AMD
|
+$92.1M |
| 4 |
Amazon
AMZN
|
+$90.3M |
| 5 |
TSMC
TSM
|
+$82.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.28% |
| 2 | Technology | 0.76% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.19% |
| 5 | Healthcare | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
7851
Global X Blockchain & Bitcoin Strategy ETF
BITS
$23.4M
| $8.05K | ﹤0.01% |
142
+135
| +1,929% | +$8.62K |
2024 Q4
6 quarters
|
|
7852
CALL
Ranpak Holdings
PACK
$310M
| $8.04K | ﹤0.01% |
+1,100
| New | +$6.35K |
2026 Q2
0 quarters
|
|
7853
PUT
New Pacific Metals
NEWP
$1.07B
| $8.04K | ﹤0.01% |
2,000
+900
| +82% | +$4.42K |
2025 Q4
2 quarters
|
|
7854
PUT
Takeda Pharmaceutical
TAK
$65B
| $8.02K | ﹤0.01% |
500
-2,100
| -81% | -$34.7K |
2026 Q1
1 quarter
|
|
7855
PUT
Green Brick Partners
GRBK
$2.79B
| $8K | ﹤0.01% |
100
-1,300
| -93% | -$89.8K |
2020 Q3
23 quarters
|
|
7856
CALL
Myriad Genetics
MYGN
$551M
| $7.99K | ﹤0.01% |
1,400
+500
| +56% | +$2.27K |
2023 Q1
13 quarters
|
|
7857
PUT
Select Water Solutions
WTTR
$2.26B
| $7.99K | ﹤0.01% |
400
-1,300
| -76% | -$22.8K |
2026 Q1
1 quarter
|
|
7858
PUT
Red Robin
RRGB
$165M
| $7.99K | ﹤0.01% |
1,000
+900
| +900% | +$4K |
2026 Q1
1 quarter
|
|
|
SVC
7859
Service Properties Trust
SVC
$806M
| $7.99K | ﹤0.01% |
+945
| New | +$7.43K |
2026 Q2
0 quarters
|
|
7860
NexPoint Residential Trust
NXRT
$488M
| $7.98K | ﹤0.01% |
286
+58
| +25% | +$1.62K |
2025 Q3
3 quarters
|
|
7861
America Movil
AMX
$74.6B
| $7.98K | ﹤0.01% |
+307
| New | +$8.07K |
2026 Q2
0 quarters
|
|
7862
CALL
Alliance Laundry Holdings
ALH
$4.26B
| $7.96K | ﹤0.01% |
300
| – | – |
2026 Q1
1 quarter
|
|
7863
AMERISAFE
AMSF
$493M
| $7.92K | ﹤0.01% |
+234
| New | +$7.4K |
2026 Q2
0 quarters
|
|
7864
PUT
Goldman Sachs Physical Gold ETF Shares
AAAU
$2.44B
| $7.91K | ﹤0.01% |
200
| – | – |
2025 Q2
4 quarters
|
|
7865
YieldMax Short NVDA Option Income Strategy ETF
DIPS
$11.5M
| $7.9K | ﹤0.01% |
199
-40
| -17% | -$1.65K |
2025 Q3
3 quarters
|
|
7866
CXApp
CXAI
$4.35M
| $7.9K | ﹤0.01% |
848
+826
| +3,755% | +$7.61K |
2024 Q4
6 quarters
|
|
7867
PUT
Tanger
SKT
$4.15B
| $7.89K | ﹤0.01% |
200
| – | – |
2021 Q2
20 quarters
|
|
7868
Laser Photonics
LASE
$41.7M
| $7.89K | ﹤0.01% |
+4,781
| New | +$6.56K |
2026 Q2
0 quarters
|
|
7869
Bombardier Recreational Products
DOO
$4.17B
| $7.87K | ﹤0.01% |
129
-2,533
| -95% | -$153K |
2025 Q3
3 quarters
|
|
7870
Peapack-Gladstone Financial
PGC
$801M
| $7.86K | ﹤0.01% |
166
-8,884
| -98% | -$376K |
2026 Q1
1 quarter
|
|
7871
CALL
Safehold
SAFE
$802M
| $7.85K | ﹤0.01% |
500
-27,200
| -98% | -$412K |
2019 Q2
28 quarters
|
|
7872
Horizon Kinetics Inflation Beneficiaries ETF
INFL
$1.54B
| $7.83K | ﹤0.01% |
+157
| New | +$8.17K |
2026 Q2
0 quarters
|
|
7873
Tiptree Inc
TIPT
$611M
| $7.83K | ﹤0.01% |
+437
| New | +$7.55K |
2026 Q2
0 quarters
|
|
7874
James River Group Holdings
JRVR
$185M
| $7.82K | ﹤0.01% |
+1,777
| New | +$8.75K |
2026 Q2
0 quarters
|
|
7875
CALL
Sabra Healthcare REIT
SBRA
$5.01B
| $7.8K | ﹤0.01% |
400
+200
| +100% | +$3.97K |
2016 Q2
40 quarters
|
|
Similar funds
Simplex Trading's Q2 2026 Portfolio in Review
As of Q2 2026, Simplex Trading held 10,638 positions worth $171B, up 14% from $149B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q2 2026 filing shows 1,714 new, 3,712 increased, 3,486 reduced and 1,487 closed positions. Its largest new stake was Micron Technology: 52,682 shares worth $60.8M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $108M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q2 2026 buy was Micron Technology: 52,682 shares worth $60.8M.
- Simplex Trading added most to iShares Russell 2000 ETF in Q2 2026, an estimated $146M increase.
- Simplex Trading's biggest Q2 2026 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $108M.
- Simplex Trading fully exited Intel in Q2 2026, selling an estimated $76.6M.
- Simplex Trading's ten largest holdings make up 50% of its $171B portfolio in Q2 2026.
- Simplex Trading opened 1,714 new positions and closed 1,487 in Q2 2026.
- Simplex Trading's portfolio value rose 14% quarter-over-quarter to $171B.
Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.