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 | |
|---|---|---|---|---|---|---|
7051
F&G Annuities & Life
FG
$4.08B
| $14K | ﹤0.01% |
+552
| New | +$14.4K |
|
7052
PUT
DXP Enterprises
DXPE
$2.6B
| $14K | ﹤0.01% |
100
-100
| -50% | -$13.4K |
|
|
UUUG
7053
Leverage Shares 2X Long UUUU Daily ETF
UUUG
$9.85M
| $14K | ﹤0.01% |
+1,355
| New | +$21.2K |
|
7054
Insperity
NSP
$1.95B
| $14K | ﹤0.01% |
516
-1,289
| -71% | -$41.5K |
|
7055
PUT
Nurix Therapeutics
NRIX
$2.36B
| $13.9K | ﹤0.01% |
900
-1,400
| -61% | -$23.2K |
|
7056
PUT
Gyre Therapeutics
GYRE
$656M
| $13.9K | ﹤0.01% |
2,000
-100
| -5% | -$777 |
|
7057
Lyell Immunopharma
LYEL
$317M
| $13.9K | ﹤0.01% |
693
+656
| +1,773% | +$15.3K |
|
7058
PUT
Wintrust Financial
WTFC
$10.7B
| $13.9K | ﹤0.01% |
+100
| New | +$14.5K |
|
7059
CALL
VEON
VEON
$3.58B
| $13.9K | ﹤0.01% |
300
+200
| +200% | +$10.5K |
|
7060
CALL
Bioceres Crop Solutions
BIOX
$21.9M
| $13.9K | ﹤0.01% |
+31,200
| New | +$23.7K |
|
7061
Douglas Elliman
DOUG
$164M
| $13.9K | ﹤0.01% |
8,458
-14,388
| -63% | -$33.4K |
|
7062
CALL
Goldman Sachs Physical Gold ETF Shares
AAAU
$2.48B
| $13.9K | ﹤0.01% |
300
-1,000
| -77% | -$48.1K |
|
7063
PUT
Red Violet
RDVT
$938M
| $13.8K | ﹤0.01% |
400
-1,500
| -79% | -$66K |
|
|
TOFR
7064
PUT
DELISTED
Stock Split Index Fund
TOFR
| $13.8K | ﹤0.01% |
400
+200
| +100% | +$6.9K |
|
|
GBFH
7065
GBank Financial Holdings
GBFH
$447M
| $13.8K | ﹤0.01% |
+515
| New | +$15.8K |
|
7066
CALL
Ribbon Communications
RBBN
$372M
| $13.8K | ﹤0.01% |
+6,500
| New | +$15.6K |
|
7067
MacroGenics
MGNX
$275M
| $13.8K | ﹤0.01% |
4,764
-333
| -7% | -$710 |
|
7068
CALL
E.W. Scripps
SSP
$297M
| $13.8K | ﹤0.01% |
3,700
+2,100
| +131% | +$7.75K |
|
7069
GigaCloud Technology
GCT
$1.43B
| $13.8K | ﹤0.01% |
+303
| New | +$12.3K |
|
7070
PUT
Stevanato
STVN
$5.23B
| $13.8K | ﹤0.01% |
1,000
+900
| +900% | +$14.9K |
|
7071
California Resources
CRC
$4.73B
| $13.7K | ﹤0.01% |
198
-4,116
| -95% | -$233K |
|
7072
Paysafe
PSFE
$419M
| $13.7K | ﹤0.01% |
2,011
-357
| -15% | -$2.53K |
|
7073
CALL
Eastern Bankshares
EBC
$4.93B
| $13.7K | ﹤0.01% |
700
-20,700
| -97% | -$413K |
|
7074
Digimarc Corp
DMRC
$136M
| $13.7K | ﹤0.01% |
2,785
+1,322
| +90% | +$7.34K |
|
7075
CALL
Amneal Pharmaceuticals
AMRX
$5.78B
| $13.7K | ﹤0.01% |
1,100
-232,200
| -100% | -$3.12M |
|
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.