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 | |
|---|---|---|---|---|---|---|---|
7276
Dr. Reddy's Laboratories
RDY
$11B
| $16.5K | ﹤0.01% |
1,138
-43,638
| -97% | -$589K |
2026 Q1
1 quarter
|
|
7277
CALL
MoneyHero
MNY
$24.7M
| $16.5K | ﹤0.01% |
18,900
+900
| +5% | +$1.15K |
2025 Q3
3 quarters
|
|
7278
CALL
KRONOS Worldwide
KRO
$900M
| $16.5K | ﹤0.01% |
2,600
-12,200
| -82% | -$83.6K |
2025 Q4
2 quarters
|
|
7279
CALL
Community Healthcare Trust
CHCT
$372M
| $16.5K | ﹤0.01% |
900
-6,000
| -87% | -$104K |
2024 Q3
7 quarters
|
|
7280
Momentus
MNTS
$47.2M
| $16.4K | ﹤0.01% |
+2,446
| New | +$19.7K |
2026 Q2
0 quarters
|
|
7281
Global X US Preferred ETF
PFFD
$1.97B
| $16.4K | ﹤0.01% |
879
+380
| +76% | +$7.17K |
2024 Q4
6 quarters
|
|
7282
Trilogy Metals
TMQ
$374M
| $16.4K | ﹤0.01% |
4,674
+4,632
| +11,029% | +$19.1K |
2026 Q1
1 quarter
|
|
7283
PUT
Intellicheck
IDN
$49.5M
| $16.4K | ﹤0.01% |
4,000
+2,000
| +100% | +$12K |
2025 Q2
4 quarters
|
|
7284
CALL
Cullinan Oncology
CGEM
$925M
| $16.4K | ﹤0.01% |
900
-1,300
| -59% | -$19.3K |
2024 Q2
8 quarters
|
|
7285
PUT
Outfront Media
OUT
$5.47B
| $16.4K | ﹤0.01% |
500
-500
| -50% | -$15.5K |
2019 Q2
28 quarters
|
|
7286
CALL
Idaho Strategic Resources
IDR
$304M
| $16.4K | ﹤0.01% |
500
+100
| +25% | +$3.89K |
2022 Q4
14 quarters
|
|
7287
Starz Entertainment Corp
STRZ
$380M
| $16.2K | ﹤0.01% |
563
-177
| -24% | -$3.86K |
2025 Q4
2 quarters
|
|
7288
CALL
Avery Dennison
AVY
$13.8B
| $16.2K | ﹤0.01% |
+100
| New | +$16.3K |
2026 Q2
0 quarters
|
|
7289
PUT
MeiraGTx Holdings
MGTX
$885M
| $16.2K | ﹤0.01% |
1,200
+200
| +20% | +$1.99K |
2023 Q4
10 quarters
|
|
7290
CALL
HawkEye 360 Inc
HAWK
$1.2B
| $16.2K | ﹤0.01% |
+800
| New | +$22.1K |
2026 Q2
0 quarters
|
|
7291
CALL
Avita Medical
RCEL
$480M
| $16.1K | ﹤0.01% |
3,900
-7,200
| -65% | -$31.1K |
2025 Q2
4 quarters
|
|
7292
PUT
Mitek Systems
MITK
$841M
| $16.1K | ﹤0.01% |
800
-1,700
| -68% | -$26.4K |
2021 Q2
20 quarters
|
|
7293
CALL
New Pacific Metals
NEWP
$1.06B
| $16.1K | ﹤0.01% |
4,000
-26,900
| -87% | -$132K |
2025 Q2
4 quarters
|
|
7294
CALL
Fidelity Enhanced Large Cap Value ETF
FELV
$3.52B
| $16K | ﹤0.01% |
400
+300
| +300% | +$11.5K |
2026 Q1
1 quarter
|
|
7295
CALL
AppFolio
APPF
$7.46B
| $16K | ﹤0.01% |
100
-600
| -86% | -$95.8K |
2025 Q4
2 quarters
|
|
7296
Simplify Volatility Premium ETF
SVOL
$524M
| $16K | ﹤0.01% |
999
-11,775
| -92% | -$187K |
2026 Q1
1 quarter
|
|
7297
SmartStop Self Storage REIT
SMA
$2.05B
| $16K | ﹤0.01% |
491
+154
| +46% | +$4.88K |
2026 Q1
1 quarter
|
|
7298
PUT
Regency Centers
REG
$13.5B
| $15.9K | ﹤0.01% |
200
-400
| -67% | -$31.4K |
2025 Q4
2 quarters
|
|
7299
American Well
AMWL
$231M
| $15.9K | ﹤0.01% |
1,745
+763
| +78% | +$5.7K |
2026 Q1
1 quarter
|
|
7300
CALL
TTEC Holdings
TTEC
$74.4M
| $15.9K | ﹤0.01% |
8,200
+7,700
| +1,540% | +$19.9K |
2025 Q2
4 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.