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 | |
|---|---|---|---|---|---|---|
7076
CALL
US Gold Corp
USAU
$233M
| $13.7K | ﹤0.01% |
900
-9,800
| -92% | -$176K |
|
|
WPRT
7077
PUT
Westport Fuel Systems
WPRT
$35.9M
| $13.6K | ﹤0.01% |
7,500
+7,100
| +1,775% | +$14.2K |
|
7078
Invesco S&P 100 Equal Weight ETF
EQWL
$2.69B
| $13.6K | ﹤0.01% |
+118
| New | +$14.1K |
|
7079
PUT
Korro Bio
KRRO
$166M
| $13.6K | ﹤0.01% |
1,200
-76,900
| -98% | -$847K |
|
7080
Mammoth Energy Services
TUSK
$130M
| $13.6K | ﹤0.01% |
+5,538
| New | +$12.6K |
|
7081
ARK Israel Innovative Technology ETF
IZRL
$143M
| $13.6K | ﹤0.01% |
504
+456
| +950% | +$13.3K |
|
7082
PUT
Gates Industrial Corporation Ltd.
GTES
$6.87B
| $13.6K | ﹤0.01% |
600
-2,900
| -83% | -$70.5K |
|
|
PAL
7083
PUT
Proficient Auto Logistics
PAL
$196M
| $13.6K | ﹤0.01% |
+2,000
| New | +$16.5K |
|
7084
CALL
Bankunited
BKU
$3.49B
| $13.5K | ﹤0.01% |
+300
| New | +$14K |
|
|
7085
PUT
Bankunited
BKU
$3.49B
| $13.5K | ﹤0.01% |
300
+100
| +50% | +$4.67K |
|
7086
PUT
Costamare
CMRE
$1.8B
| $13.5K | ﹤0.01% |
800
-12,400
| -94% | -$206K |
|
7087
PUT
Insperity
NSP
$1.95B
| $13.5K | ﹤0.01% |
500
+100
| +25% | +$3.22K |
|
|
SOGP
7088
CALL
Sound Group
SOGP
$41.9M
| $13.5K | ﹤0.01% |
800
-900
| -53% | -$12.5K |
|
|
NVA
7089
CALL
Nova Minerals Corp
NVA
$163M
| $13.5K | ﹤0.01% |
+2,300
| New | +$17.2K |
|
7090
Breakwave Tanker Shipping ETF
BWET
$30.4M
| $13.5K | ﹤0.01% |
+137
| New | +$7.19K |
|
|
NOA
7091
CALL
North American Construction
NOA
$358M
| $13.5K | ﹤0.01% |
+1,000
| New | +$15.3K |
|
7092
CALL
FNB Corp
FNB
$6.67B
| $13.4K | ﹤0.01% |
800
-17,200
| -96% | -$297K |
|
7093
Simplify Interest Rate Hedge ETF
PFIX
$167M
| $13.4K | ﹤0.01% |
+289
| New | +$13.2K |
|
|
MSTW
7094
Roundhill MSTR WeeklyPay ETF
MSTW
$37.5M
| $13.3K | ﹤0.01% |
2,131
+140
| +7% | +$1.15K |
|
7095
Werner Enterprises
WERN
$2.84B
| $13.3K | ﹤0.01% |
453
-3
| -0.7% | -$97 |
|
7096
CALL
AvePoint
AVPT
$2.76B
| $13.3K | ﹤0.01% |
1,400
-7,800
| -85% | -$87.8K |
|
7097
PUT
Oculis Holding
OCS
$708M
| $13.3K | ﹤0.01% |
+500
| New | +$13.2K |
|
7098
CALL
Kirby Corp
KEX
$7.73B
| $13.3K | ﹤0.01% |
100
-4,000
| -98% | -$507K |
|
7099
Interface
TILE
$1.86B
| $13.3K | ﹤0.01% |
+533
| New | +$16K |
|
7100
PharmaCyte Biotech
PMCB
$6.69M
| $13.3K | ﹤0.01% |
19,940
-5,894
| -23% | -$4.51K |
|
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.