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 | |
|---|---|---|---|---|---|---|
|
VIVO
7401
VivoPower PLC
VIVO
$125M
| $9.57K | ﹤0.01% |
4,163
+1,674
| +67% | +$3.73K |
|
7402
CALL
FreightCar America
RAIL
$245M
| $9.56K | ﹤0.01% |
1,200
+1,100
| +1,100% | +$12.5K |
|
|
AHRT
7403
AH Realty Trust
AHRT
$533M
| $9.56K | ﹤0.01% |
1,738
-21,005
| -92% | -$134K |
|
7404
PUT
U-Haul Holding Co Series N
UHAL.B
$12.1B
| $9.56K | ﹤0.01% |
200
-1,500
| -88% | -$71K |
|
7405
Acco Brands
ACCO
$372M
| $9.52K | ﹤0.01% |
+3,173
| New | +$11.9K |
|
7406
PUT
Celldex Therapeutics
CLDX
$2.8B
| $9.52K | ﹤0.01% |
+300
| New | +$8.18K |
|
7407
PUT
Camden National
CAC
$917M
| $9.49K | ﹤0.01% |
+200
| New | +$9.37K |
|
7408
Adicet Bio
ACET
$73.8M
| $9.49K | ﹤0.01% |
1,393
+1,306
| +1,501% | +$9.78K |
|
7409
WaFd
WAFD
$2.74B
| $9.48K | ﹤0.01% |
+302
| New | +$9.71K |
|
7410
PUT
International Money Express
IMXI
$398M
| $9.48K | ﹤0.01% |
+600
| New | +$9.38K |
|
7411
CALL
Cactus
WHD
$3.72B
| $9.47K | ﹤0.01% |
+200
| New | +$10.5K |
|
7412
VF Corp
VFC
$6.62B
| $9.46K | ﹤0.01% |
557
-91,942
| -99% | -$1.73M |
|
7413
PUT
Talos Energy
TALO
$2.47B
| $9.46K | ﹤0.01% |
600
+200
| +50% | +$2.57K |
|
|
ELVA
7414
Electrovaya
ELVA
$504M
| $9.44K | ﹤0.01% |
+1,207
| New | +$10.4K |
|
|
XRPZ
7415
Franklin XRP ETF
XRPZ
$179M
| $9.39K | ﹤0.01% |
644
+630
| +4,500% | +$11K |
|
7416
CALL
QuickLogic
QUIK
$225M
| $9.38K | ﹤0.01% |
1,000
-500
| -33% | -$4.08K |
|
7417
CALL
Bristow Group
VTOL
$1.31B
| $9.38K | ﹤0.01% |
200
| – | – |
|
7418
AutoNation
AN
$6.62B
| $9.37K | ﹤0.01% |
48
-559
| -92% | -$113K |
|
7419
CALL
Acushnet Holdings
GOLF
$6.53B
| $9.35K | ﹤0.01% |
100
-200
| -67% | -$19K |
|
7420
AdvisorShares Pure Cannabis ETF
YOLO
$31.3M
| $9.35K | ﹤0.01% |
+3,554
| New | +$10.6K |
|
7421
PUT
Amtech Systems
ASYS
$285M
| $9.34K | ﹤0.01% |
+800
| New | +$10.8K |
|
7422
PUT
Talkspace
TALK
$873M
| $9.31K | ﹤0.01% |
1,800
+1,700
| +1,700% | +$7.52K |
|
7423
PUT
Axcelis
ACLS
$4.05B
| $9.31K | ﹤0.01% |
100
-2,200
| -96% | -$195K |
|
7424
CALL
Harbor Ares Systematic High Yield ETF
SIHY
$150M
| $9.3K | ﹤0.01% |
+300
| New | +$13.6K |
|
7425
CALL
Kartoon Studios
TOON
$35.2M
| $9.3K | ﹤0.01% |
14,900
+4,300
| +41% | +$2.79K |
|
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.