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 | |
|---|---|---|---|---|---|---|
3801
Teucrium Soybean Fund
SOYB
$61M
| $307K | ﹤0.01% |
12,599
-10,240
| -45% | -$238K |
|
3802
CALL
ChargePoint
CHPT
$141M
| $307K | ﹤0.01% |
63,100
-779,800
| -93% | -$4.75M |
|
3803
PUT
BILL Holdings
BILL
$4.49B
| $306K | ﹤0.01% |
8,000
-78,900
| -91% | -$3.53M |
|
3804
PUT
Lattice Semiconductor
LSCC
$17.6B
| $306K | ﹤0.01% |
3,300
-83,300
| -96% | -$7.47M |
|
|
NAK
3805
Northern Dynasty Minerals
NAK
$784M
| $305K | ﹤0.01% |
+218,160
| New | +$379K |
|
3806
Masco
MAS
$14.1B
| $305K | ﹤0.01% |
5,048
+54
| +1% | +$3.65K |
|
3807
CALL
Rhythm Pharmaceuticals
RYTM
$6.81B
| $304K | ﹤0.01% |
3,500
+3,000
| +600% | +$292K |
|
3808
Sysco
SYY
$40.8B
| $304K | ﹤0.01% |
+4,267
| New | +$353K |
|
|
ORBS
3809
PUT
Eightco Holdings
ORBS
$234M
| $304K | ﹤0.01% |
326,400
+266,800
| +448% | +$341K |
|
|
AIFC
3810
PUT
AI Financial Corp
AIFC
$57.6M
| $304K | ﹤0.01% |
274,000
+238,500
| +672% | +$389K |
|
|
VNET
3811
VNET Group
VNET
$2.04B
| $304K | ﹤0.01% |
36,206
+9,439
| +35% | +$100K |
|
3812
PUT
Dynatrace
DT
$12.9B
| $303K | ﹤0.01% |
8,200
-16,500
| -67% | -$631K |
|
3813
Tetra Tech
TTEK
$8.49B
| $303K | ﹤0.01% |
+10,061
| New | +$356K |
|
3814
Bowman Consulting
BWMN
$470M
| $301K | ﹤0.01% |
+10,585
| New | +$345K |
|
3815
Paysign
PAYS
$501M
| $301K | ﹤0.01% |
+51,003
| New | +$207K |
|
3816
Flywire
FLYW
$1.98B
| $301K | ﹤0.01% |
25,848
+25,826
| +117,391% | +$325K |
|
3817
Lennar Class A
LEN
$19.8B
| $301K | ﹤0.01% |
+3,462
| New | +$374K |
|
|
SLDE
3818
PUT
Slide Insurance Holdings
SLDE
$2.33B
| $301K | ﹤0.01% |
16,700
+1,500
| +10% | +$26.3K |
|
|
ETOR
3819
PUT
eToro Group
ETOR
$2.84B
| $300K | ﹤0.01% |
10,000
-9,000
| -47% | -$275K |
|
3820
PUT
Beam Therapeutics
BEAM
$2.63B
| $300K | ﹤0.01% |
12,600
+2,100
| +20% | +$58.3K |
|
3821
RELX
RELX
$61.8B
| $300K | ﹤0.01% |
9,046
+6,585
| +268% | +$232K |
|
|
SERV
3822
PUT
Serve Robotics
SERV
$407M
| $300K | ﹤0.01% |
35,500
-311,400
| -90% | -$3.37M |
|
|
WBI
3823
WaterBridge Infrastructure LLC
WBI
$1.61B
| $299K | ﹤0.01% |
+11,168
| New | +$266K |
|
|
MNVT
3824
CALL
Moonvest ETF
MNVT
$69M
| $299K | ﹤0.01% |
+8,200
| New | +$198K |
|
3825
Dentsply Sirona
XRAY
$2.68B
| $299K | ﹤0.01% |
25,759
-12,664
| -33% | -$158K |
|
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.