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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
6101
Beam Global
BEEM
$23.3M
| $39K | ﹤0.01% |
12,455
+5,953
| +92% | +$24.5K |
|
6102
PUT
BRC Inc
BRCC
$121M
| $39K | ﹤0.01% |
12,400
-900
| -7% | -$2.81K |
|
6103
Candel Therapeutics
CADL
$733M
| $39K | ﹤0.01% |
4,569
-18,269
| -80% | -$108K |
|
6104
PUT
CMS Energy
CMS
$22.6B
| $39K | ﹤0.01% |
+600
| New | +$41.3K |
|
6105
Campbell Soup
CPB
$6.55B
| $39K | ﹤0.01% |
955
-1,210
| -56% | -$54.7K |
|
6106
PUT
Carriage Services
CSV
$641M
| $39K | ﹤0.01% |
1,000
-25,400
| -96% | -$937K |
|
6107
CALL
Dine Brands
DIN
$456M
| $39K | ﹤0.01% |
1,300
-100
| -7% | -$3.22K |
|
|
DX
6108
PUT
Dynex Capital
DX
$3.15B
| $39K | ﹤0.01% |
3,100
-11,400
| -79% | -$142K |
|
6109
CALL
First Advantage
FA
$3.4B
| $39K | ﹤0.01% |
2,100
| – | – |
|
6110
CALL
G-III Apparel Group
GIII
$1.54B
| $39K | ﹤0.01% |
1,200
-26,000
| -96% | -$817K |
|
|
GTY
6111
CALL
Getty Realty Corp
GTY
$2.11B
| $39K | ﹤0.01% |
1,300
-100
| -7% | -$3.17K |
|
6112
Immunocore
IMCR
$1.72B
| $39K | ﹤0.01% |
1,350
+479
| +55% | +$15.1K |
|
6113
CALL
Intrepid Potash
IPI
$456M
| $39K | ﹤0.01% |
1,800
-900
| -33% | -$22.7K |
|
6114
CALL
Integer Holdings
ITGR
$4.12B
| $39K | ﹤0.01% |
+300
| New | +$40K |
|
6115
PUT
loanDepot
LDI
$532M
| $39K | ﹤0.01% |
19,400
+5,600
| +41% | +$12.5K |
|
6116
PUT
MediWound
MDWD
$181M
| $39K | ﹤0.01% |
2,200
-1,800
| -45% | -$31K |
|
6117
CALL
MGP Ingredients
MGPI
$379M
| $39K | ﹤0.01% |
1,000
+600
| +150% | +$32.6K |
|
|
6118
PUT
MGP Ingredients
MGPI
$379M
| $39K | ﹤0.01% |
1,000
+900
| +900% | +$49K |
|
6119
CALL
Materion
MTRN
$4.39B
| $39K | ﹤0.01% |
400
+100
| +33% | +$10.9K |
|
6120
CALL
Vitamin Cottage Natural Grocers
NGVC
$739M
| $39K | ﹤0.01% |
+1,000
| New | +$34.6K |
|
|
OGI
6121
CALL
Organigram Holdings
OGI
$132M
| $39K | ﹤0.01% |
24,400
-34,500
| -59% | -$56.2K |
|
|
OTLY
6122
CALL
Oatly Group
OTLY
$465M
| $39K | ﹤0.01% |
3,015
+2,160
| +253% | +$31.8K |
|
6123
CALL
Puma Biotechnology
PBYI
$404M
| $39K | ﹤0.01% |
12,900
-600
| -4% | -$1.75K |
|
6124
PUT
Paylocity
PCTY
$7.38B
| $39K | ﹤0.01% |
200
-400
| -67% | -$76.6K |
|
6125
PUT
Phathom Pharmaceuticals
PHAT
$708M
| $39K | ﹤0.01% |
4,900
+1,400
| +40% | +$17.3K |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.