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 | |
|---|---|---|---|---|---|---|---|
|
BHR
6101
Braemar Hotels & Resorts
BHR
$113M
| $40.4K | ﹤0.01% |
+17,102
| New | +$47.6K |
2026 Q1
0 quarters
|
|
6102
SouthState Bank Corp
SSB
$9.76B
| $40.3K | ﹤0.01% |
+436
| New | +$42.8K |
2026 Q1
0 quarters
|
|
6103
CALL
The Ensign Group
ENSG
$9.89B
| $40.3K | ﹤0.01% |
200
-3,100
| -94% | -$606K |
2025 Q2
3 quarters
|
|
6104
Tuttle Capital Daily 2X Inverse Regional Banks ETF
SKRE
$5.93M
| $40.3K | ﹤0.01% |
4,683
+3,840
| +456% | +$31.7K |
2025 Q4
1 quarter
|
|
6105
ProQR Therapeutics
PRQR
$230M
| $40.3K | ﹤0.01% |
24,868
-19,401
| -44% | -$31.8K |
2025 Q4
1 quarter
|
|
6106
PUT
Columbia Financial
CLBK
$3.01B
| $40.3K | ﹤0.01% |
5,060
+4,620
| +1,050% | +$36.1K |
2024 Q4
5 quarters
|
|
6107
Funko
FNKO
$314M
| $40.2K | ﹤0.01% |
12,775
-253,588
| -95% | -$1.01M |
2024 Q4
5 quarters
|
|
|
ORC
6108
CALL
Orchid Island Capital
ORC
$1.03B
| $40.1K | ﹤0.01% |
5,700
-25,200
| -82% | -$190K |
2019 Q4
25 quarters
|
|
6109
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$618M
| $40K | ﹤0.01% |
+671
| New | +$42.9K |
2026 Q1
0 quarters
|
|
6110
Descartes Systems
DSGX
$6.95B
| $39.9K | ﹤0.01% |
558
+315
| +130% | +$23.3K |
2025 Q3
2 quarters
|
|
6111
CALL
Aveanna Healthcare
AVAH
$2.71B
| $39.9K | ﹤0.01% |
+6,200
| New | +$47.9K |
2026 Q1
0 quarters
|
|
6112
CALL
Bausch + Lomb
BLCO
$6.05B
| $39.8K | ﹤0.01% |
2,500
-17,000
| -87% | -$289K |
2022 Q2
15 quarters
|
|
6113
PUT
Claros Mortgage Trust
CMTG
$171M
| $39.7K | ﹤0.01% |
16,700
+10,300
| +161% | +$26.7K |
2025 Q3
2 quarters
|
|
6114
Terreno Realty
TRNO
$6.97B
| $39.7K | ﹤0.01% |
647
+634
| +4,877% | +$39.8K |
2025 Q2
3 quarters
|
|
6115
CALL
Civeo
CVEO
$349M
| $39.7K | ﹤0.01% |
1,500
| – | – |
2025 Q4
1 quarter
|
|
6116
PUT
inTEST
INTT
$154M
| $39.6K | ﹤0.01% |
2,900
| – | – |
2025 Q1
4 quarters
|
|
6117
Direxion Daily CSI 300 China A Share Bull 2X ETF
CHAU
$84.6M
| $39.6K | ﹤0.01% |
1,954
-9,781
| -83% | -$212K |
2025 Q3
2 quarters
|
|
|
PRA
6118
CALL
DELISTED
ProAssurance
PRA
| $39.6K | ﹤0.01% |
1,600
+100
| +7% | +$2.44K |
2025 Q1
4 quarters
|
|
6119
CALL
LGI Homes
LGIH
$1.11B
| $39.5K | ﹤0.01% |
1,000
-600
| -38% | -$29.2K |
2015 Q3
42 quarters
|
|
6120
PUT
Carter's
CRI
$1.16B
| $39.3K | ﹤0.01% |
1,100
-1,000
| -48% | -$36.4K |
2017 Q3
34 quarters
|
|
|
NFBK
6121
CALL
DELISTED
Northfield Bancorp
NFBK
| $39.3K | ﹤0.01% |
+2,900
| New | +$37.4K |
2026 Q1
0 quarters
|
|
6122
TETRA Technologies
TTI
$863M
| $39.1K | ﹤0.01% |
4,592
-118,864
| -96% | -$1.19M |
2025 Q4
1 quarter
|
|
6123
Lifestance Health
LFST
$4.53B
| $39.1K | ﹤0.01% |
+6,135
| New | +$42.7K |
2026 Q1
0 quarters
|
|
6124
CALL
Vishay Precision Group
VPG
$1B
| $39.1K | ﹤0.01% |
900
| – | – |
2025 Q2
3 quarters
|
|
6125
PUT
AutoNation
AN
$5.45B
| $39.1K | ﹤0.01% |
200
+100
| +100% | +$20.2K |
2015 Q3
42 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.