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 | |
|---|---|---|---|---|---|---|
1651
McDonald's
MCD
$188B
| $2.48M | ﹤0.01% |
+7,988
| New | +$2.54M |
|
1652
CALL
Frontline
FRO
$8.75B
| $2.48M | ﹤0.01% |
71,200
-123,400
| -63% | -$3.77M |
|
1653
PUT
Comstock
LODE
$228M
| $2.48M | ﹤0.01% |
813,600
+660,200
| +430% | +$2.16M |
|
|
EH
1654
EHang Holdings
EH
$372M
| $2.48M | ﹤0.01% |
255,363
-54,704
| -18% | -$673K |
|
1655
PUT
Hormel Foods
HRL
$13.9B
| $2.47M | ﹤0.01% |
109,200
-39,900
| -27% | -$954K |
|
1656
CALL
Regions Financial
RF
$26.3B
| $2.47M | ﹤0.01% |
94,600
-63,600
| -40% | -$1.78M |
|
1657
AeroVironment
AVAV
$7.57B
| $2.47M | ﹤0.01% |
13,491
+9,493
| +237% | +$2.5M |
|
1658
PUT
Invesco DB Base Metals Fund
DBB
$306M
| $2.47M | ﹤0.01% |
+91,200
| New | +$2.17M |
|
1659
PUT
Autodesk
ADSK
$44.3B
| $2.47M | ﹤0.01% |
10,300
-18,100
| -64% | -$4.55M |
|
1660
CALL
Beazer Homes USA
BZH
$907M
| $2.46M | ﹤0.01% |
128,000
+99,300
| +346% | +$2.29M |
|
1661
CALL
Fortuna Silver Mines
FSM
$2.59B
| $2.46M | ﹤0.01% |
247,300
-76,100
| -24% | -$825K |
|
1662
PUT
Factset
FDS
$9.05B
| $2.45M | ﹤0.01% |
11,300
+4,800
| +74% | +$1.12M |
|
1663
PUT
Sportradar
SRAD
$4.23B
| $2.45M | ﹤0.01% |
146,300
+82,100
| +128% | +$1.53M |
|
1664
CALL
Delek US
DK
$3.87B
| $2.45M | ﹤0.01% |
54,300
+43,400
| +398% | +$1.55M |
|
1665
CALL
PENN Entertainment
PENN
$2.74B
| $2.44M | ﹤0.01% |
162,500
-118,500
| -42% | -$1.65M |
|
1666
CALL
Teladoc Health
TDOC
$1.58B
| $2.44M | ﹤0.01% |
447,600
-104,200
| -19% | -$585K |
|
1667
Roivant Sciences
ROIV
$25.2B
| $2.44M | ﹤0.01% |
88,035
-55,862
| -39% | -$1.44M |
|
1668
PUT
First Horizon
FHN
$12.1B
| $2.44M | ﹤0.01% |
107,000
-60,600
| -36% | -$1.45M |
|
1669
PUT
Toyota
TM
$210B
| $2.43M | ﹤0.01% |
11,800
-16,700
| -59% | -$3.77M |
|
1670
Noble Corp
NE
$6.9B
| $2.43M | ﹤0.01% |
49,497
-18,376
| -27% | -$751K |
|
|
KOCG
1671
PUT
DELISTED
FIS Knights of Columbus Global Belief ETF
KOCG
| $2.43M | ﹤0.01% |
51,100
-5,700
| -10% | -$271K |
|
|
KEEL
1672
PUT
Keel Infrastructure Corp
KEEL
$2.57B
| $2.43M | ﹤0.01% |
1,244,900
-706,200
| -36% | -$1.66M |
|
1673
PUT
Vulcan Materials
VMC
$36.3B
| $2.42M | ﹤0.01% |
+8,900
| New | +$2.62M |
|
1674
CALL
ADMA Biologics
ADMA
$1.92B
| $2.42M | ﹤0.01% |
268,600
+47,700
| +22% | +$753K |
|
1675
PUT
Idacorp
IDA
$8.23B
| $2.42M | ﹤0.01% |
16,900
-14,300
| -46% | -$1.96M |
|
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.