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 | |
|---|---|---|---|---|---|---|
|
USAS
3651
CALL
Americas Gold and Silver
USAS
$1.29B
| $352K | ﹤0.01% |
+67,400
| New | +$492K |
|
3652
CALL
Absci
ABSI
$1.32B
| $351K | ﹤0.01% |
117,000
+4,000
| +4% | +$11.6K |
|
|
AEVA
3653
CALL
Aeva Technologies
AEVA
$1.2B
| $350K | ﹤0.01% |
26,600
-95,900
| -78% | -$1.43M |
|
|
PLG
3654
CALL
Platinum Group Metals
PLG
$164M
| $349K | ﹤0.01% |
197,400
-15,300
| -7% | -$37K |
|
3655
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.31B
| $349K | ﹤0.01% |
5,456
-19,561
| -78% | -$1.28M |
|
|
BLDP
3656
CALL
Ballard Power Systems
BLDP
$805M
| $349K | ﹤0.01% |
144,200
-66,000
| -31% | -$157K |
|
|
BULL
3657
Webull Corp
BULL
$3.75B
| $349K | ﹤0.01% |
72,649
+28,167
| +63% | +$182K |
|
3658
CALL
Aemetis
AMTX
$106M
| $349K | ﹤0.01% |
109,300
+1,200
| +1% | +$2.18K |
|
3659
CALL
Finance of America Companies
FOA
$203M
| $349K | ﹤0.01% |
21,000
-48,700
| -70% | -$1.01M |
|
|
BORR
3660
Borr Drilling
BORR
$1.24B
| $348K | ﹤0.01% |
+60,352
| New | +$309K |
|
3661
PUT
Granite Construction
GVA
$5.29B
| $348K | ﹤0.01% |
+2,900
| New | +$362K |
|
|
CUK
3662
DELISTED
Carnival PLC
CUK
| $348K | ﹤0.01% |
13,489
+12,806
| +1,875% | +$371K |
|
3663
CALL
AGCO
AGCO
$7.4B
| $348K | ﹤0.01% |
3,000
+300
| +11% | +$36.4K |
|
3664
PUT
Forward Air
FWRD
$444M
| $348K | ﹤0.01% |
20,800
-5,900
| -22% | -$144K |
|
3665
Teucrium Wheat Fund
WEAT
$285M
| $347K | ﹤0.01% |
14,743
+14,565
| +8,183% | +$314K |
|
3666
PUT
National Grid
NGG
$80.4B
| $347K | ﹤0.01% |
4,100
+1,300
| +46% | +$112K |
|
3667
CALL
Woodside Energy
WDS
$44.6B
| $346K | ﹤0.01% |
14,500
+10,600
| +272% | +$206K |
|
3668
PNC Financial Services
PNC
$99.7B
| $346K | ﹤0.01% |
1,663
+939
| +130% | +$204K |
|
3669
PUT
BlackBerry
BB
$4.98B
| $346K | ﹤0.01% |
106,800
-121,900
| -53% | -$431K |
|
3670
PUT
Cracker Barrel
CBRL
$1.26B
| $346K | ﹤0.01% |
+12,300
| New | +$374K |
|
3671
CALL
Telephone and Data Systems
TDS
$3.82B
| $345K | ﹤0.01% |
8,200
-106,300
| -93% | -$4.67M |
|
|
ABVX
3672
CALL
Abivax
ABVX
$10.9B
| $345K | ﹤0.01% |
3,100
-600
| -16% | -$71K |
|
3673
PUT
Coca-Cola Consolidated
COKE
$12.5B
| $345K | ﹤0.01% |
1,800
+600
| +50% | +$105K |
|
3674
PUT
Charles River Laboratories
CRL
$11.2B
| $345K | ﹤0.01% |
2,000
+1,500
| +300% | +$278K |
|
3675
CALL
Host Hotels & Resorts
HST
$17.2B
| $345K | ﹤0.01% |
18,000
-8,200
| -31% | -$156K |
|
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.