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 | |
|---|---|---|---|---|---|---|
2101
PUT
Darden Restaurants
DRI
$23.4B
| $1.47M | ﹤0.01% |
7,500
-14,400
| -66% | -$2.96M |
|
2102
CALL
Piper Sandler
PIPR
$5.15B
| $1.47M | ﹤0.01% |
19,200
+16,000
| +500% | +$1.31M |
|
2103
CALL
Becton Dickinson
BDX
$43.8B
| $1.47M | ﹤0.01% |
13,200
+1,600
| +14% | +$294K |
|
2104
PUT
ProShares Ether Strategy ETF
EETH
$56.5M
| $1.47M | ﹤0.01% |
67,300
-115,300
| -63% | -$3.44M |
|
2105
CALL
SS&C Technologies
SSNC
$18.1B
| $1.47M | ﹤0.01% |
21,700
-33,400
| -61% | -$2.57M |
|
2106
PUT
CytomX Therapeutics
CTMX
$708M
| $1.47M | ﹤0.01% |
311,900
+310,700
| +25,892% | +$1.58M |
|
2107
PUT
Invesco DB Commodity Index Tracking Fund
DBC
$1.67B
| $1.46M | ﹤0.01% |
50,600
+26,900
| +114% | +$683K |
|
2108
CALL
Chemours
CC
$2.55B
| $1.46M | ﹤0.01% |
66,400
-241,900
| -78% | -$4.21M |
|
2109
PUT
SoundHound AI
SOUN
$2.79B
| $1.46M | ﹤0.01% |
212,900
-448,400
| -68% | -$3.87M |
|
2110
PUT
Rubrik
RBRK
$15.4B
| $1.46M | ﹤0.01% |
29,800
-66,800
| -69% | -$3.83M |
|
2111
CALL
Bausch Health
BHC
$1.67B
| $1.46M | ﹤0.01% |
269,700
-1,900
| -0.7% | -$11.4K |
|
2112
PUT
Zimmer Biomet
ZBH
$17.8B
| $1.46M | ﹤0.01% |
16,100
-22,500
| -58% | -$2.06M |
|
2113
PPG Industries
PPG
$26.4B
| $1.46M | ﹤0.01% |
+13,615
| New | +$1.54M |
|
2114
CALL
Banco Bradesco
BBD
$38.5B
| $1.45M | ﹤0.01% |
398,300
+107,300
| +37% | +$407K |
|
2115
OneMain Financial
OMF
$7.08B
| $1.45M | ﹤0.01% |
+27,170
| New | +$1.61M |
|
|
TTAN
2116
PUT
ServiceTitan Inc
TTAN
$7.15B
| $1.45M | ﹤0.01% |
22,900
+21,300
| +1,331% | +$1.64M |
|
2117
PUT
Elanco Animal Health
ELAN
$12.7B
| $1.45M | ﹤0.01% |
60,700
-109,400
| -64% | -$2.67M |
|
|
2118
CALL
Darden Restaurants
DRI
$23.4B
| $1.45M | ﹤0.01% |
7,400
-21,900
| -75% | -$4.5M |
|
2119
CALL
Vicor
VICR
$9.41B
| $1.45M | ﹤0.01% |
9,000
+3,100
| +53% | +$512K |
|
2120
Pitney Bowes
PBI
$2.46B
| $1.45M | ﹤0.01% |
130,939
-97,330
| -43% | -$1.02M |
|
|
DPRO
2121
CALL
Draganfly
DPRO
$162M
| $1.44M | ﹤0.01% |
292,600
+167,500
| +134% | +$1.24M |
|
|
HOLX
2122
CALL
DELISTED
Hologic
HOLX
| $1.44M | ﹤0.01% |
19,000
+16,900
| +805% | +$1.27M |
|
2123
CALL
LivePerson
LPSN
$20.8M
| $1.44M | ﹤0.01% |
563,200
-100
| -0% | -$304 |
|
2124
PUT
Banco Bilbao Vizcaya Argentaria
BBVA
$147B
| $1.44M | ﹤0.01% |
+66,300
| New | +$1.53M |
|
2125
PUT
Vista Energy
VIST
$7.42B
| $1.43M | ﹤0.01% |
19,000
-3,500
| -16% | -$204K |
|
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.