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 | Held Since | |
|---|---|---|---|---|---|---|---|
4326
CALL
Tiptree Inc
TIPT
$644M
| $196K | ﹤0.01% |
11,600
-41,600
| -78% | -$712K |
2025 Q3
2 quarters
|
|
4327
Simplify Volatility Premium ETF
SVOL
$513M
| $196K | ﹤0.01% |
+12,774
| New | +$215K |
2026 Q1
0 quarters
|
|
4328
CALL
Amplify Energy
AMPY
$182M
| $196K | ﹤0.01% |
31,400
-265,800
| -89% | -$1.45M |
2020 Q4
21 quarters
|
|
4329
Sprott Junior Gold Miners ETF
SGDJ
$330M
| $196K | ﹤0.01% |
2,275
+1,871
| +463% | +$181K |
2025 Q4
1 quarter
|
|
|
MASI
4330
PUT
DELISTED
Masimo
MASI
| $196K | ﹤0.01% |
+1,100
| New | +$173K |
2026 Q1
0 quarters
|
|
4331
PUT
Brown & Brown
BRO
$20.7B
| $196K | ﹤0.01% |
3,000
+400
| +15% | +$28.8K |
2024 Q4
5 quarters
|
|
4332
PUT
MBIA
MBI
$219M
| $196K | ﹤0.01% |
33,100
+2,800
| +9% | +$17.8K |
2025 Q3
2 quarters
|
|
|
RZLV
4333
PUT
Rezolve AI
RZLV
$888M
| $195K | ﹤0.01% |
76,100
-102,100
| -57% | -$288K |
2025 Q1
4 quarters
|
|
4334
CALL
Guidewire Software
GWRE
$12.7B
| $194K | ﹤0.01% |
1,300
-900
| -41% | -$137K |
2017 Q1
36 quarters
|
|
4335
CALL
TriMas Corp
TRS
$1.38B
| $194K | ﹤0.01% |
+5,400
| New | +$194K |
2026 Q1
0 quarters
|
|
4336
Telesat
TSAT
$707M
| $194K | ﹤0.01% |
5,360
+4,602
| +607% | +$148K |
2024 Q4
5 quarters
|
|
|
MOMO
4337
Hello Group
MOMO
$692M
| $194K | ﹤0.01% |
33,640
+20,954
| +165% | +$136K |
2025 Q1
4 quarters
|
|
4338
PUT
Cavco Industries
CVCO
$4.44B
| $194K | ﹤0.01% |
400
+300
| +300% | +$170K |
2025 Q2
3 quarters
|
|
4339
PUT
Lloyds Banking Group
LYG
$78B
| $194K | ﹤0.01% |
38,500
+14,700
| +62% | +$80.6K |
2019 Q2
27 quarters
|
|
|
ROI
4340
CALL
DELISTED
WISDOMTREE LARGECAP GROWTH FUND
ROI
| $194K | ﹤0.01% |
+3,700
| New | +$194K |
2026 Q1
0 quarters
|
|
|
TMQ
4341
PUT
Trilogy Metals
TMQ
$547M
| $194K | ﹤0.01% |
53,900
-7,900
| -13% | -$36K |
2025 Q3
2 quarters
|
|
|
LTC
4342
CALL
LTC Properties
LTC
$2.3B
| $193K | ﹤0.01% |
5,200
-3,900
| -43% | -$147K |
2018 Q2
31 quarters
|
|
4343
CALL
Floor & Decor
FND
$4.9B
| $193K | ﹤0.01% |
3,800
-79,600
| -95% | -$5.18M |
2017 Q2
35 quarters
|
|
|
SMU
4344
CALL
Tradr 2X Long SMR Daily ETF
SMU
$148M
| $193K | ﹤0.01% |
1,250
+667
| +114% | +$87.8K |
2025 Q3
2 quarters
|
|
4345
PUT
Zedge
ZDGE
$46.9M
| $193K | ﹤0.01% |
65,800
-900
| -1% | -$2.91K |
2025 Q3
2 quarters
|
|
|
REFI
4346
Chicago Atlantic Real Estate Finance
REFI
$254M
| $193K | ﹤0.01% |
+17,024
| New | +$207K |
2026 Q1
0 quarters
|
|
|
ESPR
4347
PUT
DELISTED
Esperion Therapeutics
ESPR
| $193K | ﹤0.01% |
+70,300
| New | +$223K |
2026 Q1
0 quarters
|
|
4348
Ternium
TX
$10.9B
| $192K | ﹤0.01% |
+4,790
| New | +$198K |
2026 Q1
0 quarters
|
|
4349
CALL
Opko Health
OPK
$1.17B
| $192K | ﹤0.01% |
168,200
-94,700
| -36% | -$117K |
2021 Q2
19 quarters
|
|
4350
CALL
Concentrix
CNXC
$1.65B
| $192K | ﹤0.01% |
7,000
+1,800
| +35% | +$63.9K |
2020 Q4
21 quarters
|
|
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.