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 | |
|---|---|---|---|---|---|---|
7776
CALL
Granite Ridge Resources
GRNT
$572M
| $5.87K | ﹤0.01% |
1,000
+700
| +233% | +$3.51K |
|
7777
CALL
Community Bank
CBU
$3.13B
| $5.87K | ﹤0.01% |
+100
| New | +$6.12K |
|
|
YSG
7778
Yatsen Holding
YSG
$261M
| $5.85K | ﹤0.01% |
+1,900
| New | +$7.65K |
|
|
TXNM
7779
CALL
TXNM Energy Inc
TXNM
$6.42B
| $5.85K | ﹤0.01% |
100
-5,100
| -98% | -$301K |
|
7780
CALL
Telecom Argentina
TEO
$5.29B
| $5.84K | ﹤0.01% |
500
+200
| +67% | +$2.33K |
|
7781
PUT
Essent Group
ESNT
$5.2B
| $5.84K | ﹤0.01% |
100
-100
| -50% | -$6.1K |
|
7782
CALL
Barrett Business Services
BBSI
$733M
| $5.84K | ﹤0.01% |
+200
| New | +$6.61K |
|
7783
PUT
Prenetics Global
PRE
$388M
| $5.8K | ﹤0.01% |
+300
| New | +$5.59K |
|
7784
PUT
CNB Financial Corp
CCNE
$986M
| $5.79K | ﹤0.01% |
200
-500
| -71% | -$14K |
|
|
UMH
7785
PUT
UMH Properties
UMH
$1.31B
| $5.77K | ﹤0.01% |
400
-2,800
| -88% | -$43.3K |
|
7786
Kanzhun
BZ
$6.48B
| $5.77K | ﹤0.01% |
431
-2,948
| -87% | -$49.9K |
|
7787
Getty Images
GETY
| $5.76K | ﹤0.01% |
7,261
-26,134
| -78% | -$26.3K |
|
|
VIVO
7788
CALL
VivoPower PLC
VIVO
$118M
| $5.75K | ﹤0.01% |
2,500
-8,800
| -78% | -$19.6K |
|
7789
Pentair
PNR
$8.46B
| $5.75K | ﹤0.01% |
66
-1,315
| -95% | -$129K |
|
7790
PUT
VanEck Bitcoin Trust
HODL
$1.39B
| $5.75K | ﹤0.01% |
300
+100
| +50% | +$2.16K |
|
7791
Enanta Pharmaceuticals
ENTA
$384M
| $5.75K | ﹤0.01% |
455
-467
| -51% | -$6.26K |
|
7792
CALL
Veru
VERU
$45.4M
| $5.75K | ﹤0.01% |
2,600
-4,600
| -64% | -$11.2K |
|
7793
CALL
Lifetime Brands
LCUT
$198M
| $5.74K | ﹤0.01% |
+1,000
| New | +$3.79K |
|
|
MAXN
7794
PUT
DELISTED
Maxeon Solar Technologies
MAXN
| $5.74K | ﹤0.01% |
+3,800
| New | +$9.83K |
|
7795
CALL
Beam Global
BEEM
$25.6M
| $5.73K | ﹤0.01% |
3,900
-42,400
| -92% | -$66.8K |
|
7796
MSC Industrial Direct
MSM
$6.91B
| $5.72K | ﹤0.01% |
62
-134
| -68% | -$12K |
|
7797
CALL
Brilliant Earth
BRLT
$22.5M
| $5.72K | ﹤0.01% |
4,300
-1,100
| -20% | -$1.66K |
|
|
COYY
7798
GraniteShares YieldBOOST COIN ETF
COYY
$16.6M
| $5.71K | ﹤0.01% |
223
-782
| -78% | -$26.1K |
|
7799
Stevanato
STVN
$5.73B
| $5.71K | ﹤0.01% |
415
+346
| +501% | +$5.73K |
|
7800
CALL
Moelis & Co
MC
$4.26B
| $5.7K | ﹤0.01% |
100
-2,000
| -95% | -$130K |
|
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.