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 | |
|---|---|---|---|---|---|---|
6051
Playtika
PLTK
$1.52B
| $42K | ﹤0.01% |
+6,102
| New | +$48.1K |
|
6052
CALL
Sally Beauty Holdings
SBH
$1.43B
| $42K | ﹤0.01% |
4,100
-3,800
| -48% | -$48.6K |
|
6053
ProShares UltraShort Bloomberg Crude Oil
SCO
$671M
| $42K | ﹤0.01% |
635
-278
| -30% | -$19.9K |
|
|
SNBR
6054
PUT
DELISTED
Sleep Number
SNBR
| $42K | ﹤0.01% |
2,800
-4,700
| -63% | -$72.9K |
|
6055
CALL
Tactile Systems Technology
TCMD
$635M
| $42K | ﹤0.01% |
+2,500
| New | +$40.2K |
|
6056
PUT
Trinity Industries
TRN
$2.49B
| $42K | ﹤0.01% |
1,200
-1,800
| -60% | -$65K |
|
6057
Ternium
TX
$9.67B
| $42K | ﹤0.01% |
+1,476
| New | +$49.4K |
|
6058
PUT
Vishay Intertechnology
VSH
$5.25B
| $42K | ﹤0.01% |
2,500
+500
| +25% | +$8.77K |
|
|
PLTY
6059
YieldMax PLTR Option Income Strategy ETF
PLTY
$312M
| $42K | ﹤0.01% |
+599
| New | +$36.8K |
|
6060
AirSculpt Technologies
AIRS
$339M
| $41K | ﹤0.01% |
7,966
+1,985
| +33% | +$12.2K |
|
6061
PUT
American Homes 4 Rent
AMH
$12B
| $41K | ﹤0.01% |
1,100
+1,000
| +1,000% | +$37.4K |
|
|
BHR
6062
CALL
Braemar Hotels & Resorts
BHR
$156M
| $41K | ﹤0.01% |
13,900
| – | – |
|
6063
CALL
Bruker
BRKR
$9.57B
| $41K | ﹤0.01% |
700
+600
| +600% | +$35.5K |
|
6064
PUT
Calix
CALX
$2.26B
| $41K | ﹤0.01% |
1,200
-6,400
| -84% | -$225K |
|
6065
CVRx
CVRX
$137M
| $41K | ﹤0.01% |
3,253
-2,140
| -40% | -$26.4K |
|
6066
PUT
CXApp
CXAI
$13.4M
| $41K | ﹤0.01% |
+23,000
| New | +$36.8K |
|
6067
CALL
Genesis Energy
GEL
$1.87B
| $41K | ﹤0.01% |
4,100
-57,600
| -93% | -$681K |
|
|
GP
6068
CALL
GreenPower Motor Co
GP
$10.5M
| $41K | ﹤0.01% |
5,370
+5,030
| +1,479% | +$50.1K |
|
6069
Helix Energy Solutions
HLX
$1.4B
| $41K | ﹤0.01% |
4,449
-72,938
| -94% | -$734K |
|
|
KREF
6070
CALL
KKR Real Estate Finance Trust
KREF
$448M
| $41K | ﹤0.01% |
4,100
-133,000
| -97% | -$1.52M |
|
|
LNW
6071
DELISTED
Light & Wonder
LNW
| $41K | ﹤0.01% |
477
-2,358
| -83% | -$221K |
|
6072
Lufax Holding
LU
$1.35B
| $41K | ﹤0.01% |
17,216
-27,065
| -61% | -$74.7K |
|
6073
Northwest Natural Holdings
NWN
$2.06B
| $41K | ﹤0.01% |
+1,061
| New | +$43.3K |
|
6074
PUT
OGE Energy
OGE
$9.78B
| $41K | ﹤0.01% |
+1,000
| New | +$41.6K |
|
|
OLPX
6075
DELISTED
Olaplex Holdings
OLPX
| $41K | ﹤0.01% |
23,845
-77,977
| -77% | -$155K |
|
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.