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 | |
|---|---|---|---|---|---|---|---|
6376
CALL
Alpha Architect US Quantitative Value ETF
QVAL
$607M
| $30.4K | ﹤0.01% |
+600
| New | +$31.2K |
2026 Q1
0 quarters
|
|
|
OPLN
6377
Openlane
OPLN
$4.26B
| $30.3K | ﹤0.01% |
+1,041
| New | +$30.1K |
2026 Q1
0 quarters
|
|
|
VRE
6378
PUT
DELISTED
Veris Residential
VRE
| $30.2K | ﹤0.01% |
1,600
| – | – |
2025 Q4
1 quarter
|
|
6379
PUT
OptimizeRx
OPRX
$158M
| $30.1K | ﹤0.01% |
4,800
+3,900
| +433% | +$36.2K |
2025 Q3
2 quarters
|
|
|
ILPT
6380
CALL
Industrial Logistics Properties Trust
ILPT
$465M
| $30.1K | ﹤0.01% |
+5,300
| New | +$30.8K |
2026 Q1
0 quarters
|
|
6381
CALL
ePlus
PLUS
$2.42B
| $30.1K | ﹤0.01% |
400
-1,200
| -75% | -$98.4K |
2025 Q4
1 quarter
|
|
6382
Silgan Holdings
SLGN
$3.67B
| $30K | ﹤0.01% |
774
-88
| -10% | -$3.86K |
2025 Q3
2 quarters
|
|
6383
PUT
Dolby
DLB
$5.53B
| $30K | ﹤0.01% |
500
| – | – |
2025 Q2
3 quarters
|
|
6384
PUT
Future Fuel
FF
$220M
| $30K | ﹤0.01% |
7,800
+7,300
| +1,460% | +$27.4K |
2019 Q3
26 quarters
|
|
|
HUCK
6385
PUT
Huckleberry.ai, Inc. Class B Common Stock
HUCK
$153M
| $30K | ﹤0.01% |
9,800
+8,500
| +654% | +$43.1K |
2021 Q1
20 quarters
|
|
6386
Consensus Cloud Solutions
CCSI
$655M
| $30K | ﹤0.01% |
+1,263
| New | +$32.5K |
2026 Q1
0 quarters
|
|
6387
CALL
Independent Bank Corp
IBCP
$790M
| $30K | ﹤0.01% |
900
+800
| +800% | +$27.5K |
2025 Q4
1 quarter
|
|
6388
CALL
Herc Holdings
HRI
$4.41B
| $29.9K | ﹤0.01% |
300
| – | – |
2014 Q4
45 quarters
|
|
6389
PUT
Amneal Pharmaceuticals
AMRX
$6.99B
| $29.8K | ﹤0.01% |
+2,400
| New | +$32.2K |
2026 Q1
0 quarters
|
|
6390
CALL
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$618M
| $29.8K | ﹤0.01% |
500
-900
| -64% | -$57.5K |
2023 Q2
11 quarters
|
|
6391
ProShares Ultra Russell2000
UWM
$220M
| $29.7K | ﹤0.01% |
+637
| New | +$32.6K |
2026 Q1
0 quarters
|
|
6392
CALL
RenaissanceRe
RNR
$13.4B
| $29.7K | ﹤0.01% |
+100
| New | +$29K |
2026 Q1
0 quarters
|
|
6393
PUT
Usana Health Sciences
USNA
$266M
| $29.7K | ﹤0.01% |
1,700
-200
| -11% | -$3.97K |
2024 Q4
5 quarters
|
|
6394
Invesco CurrencyShares Japanese Yen Trust
FXY
$461M
| $29.7K | ﹤0.01% |
+513
| New | +$30K |
2026 Q1
0 quarters
|
|
6395
PUT
BlackRock US Equity Factor Rotation ETF
DYNF
$41.9B
| $29.7K | ﹤0.01% |
900
-200
| -18% | -$12.1K |
2025 Q2
3 quarters
|
|
6396
CALL
Red Robin
RRGB
$142M
| $29.6K | ﹤0.01% |
+10,100
| New | +$37.9K |
2026 Q1
0 quarters
|
|
6397
CALL
Sylvamo
SLVM
$1.32B
| $29.6K | ﹤0.01% |
700
| – | – |
2021 Q4
17 quarters
|
|
|
SGI
6398
PUT
Somnigroup International
SGI
$14.4B
| $29.6K | ﹤0.01% |
+400
| New | +$34.7K |
2026 Q1
0 quarters
|
|
6399
UMB Financial
UMBF
$9.86B
| $29.6K | ﹤0.01% |
+262
| New | +$31.5K |
2026 Q1
0 quarters
|
|
6400
CALL
Immersion
IMMR
$243M
| $29.5K | ﹤0.01% |
5,400
-24,600
| -82% | -$155K |
2017 Q2
35 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.