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 | |
|---|---|---|---|---|---|---|
126
PUT
United Airlines
UAL
$38.2B
| $143M | 0.08% |
1,472,600
+378,100
| +35% | +$32M |
|
127
CALL
Snowflake
SNOW
$94.2B
| $143M | 0.08% |
924,500
+6,200
| +0.7% | +$873K |
|
128
CALL
Palo Alto Networks
PANW
$279B
| $141M | 0.08% |
773,600
-142,200
| -16% | -$26.9M |
|
129
PUT
UnitedHealth
UNH
$396B
| $138M | 0.08% |
273,300
+8,100
| +3% | +$4.6M |
|
130
PUT
Shopify
SHOP
$160B
| $136M | 0.08% |
1,278,400
-69,200
| -5% | -$6.73M |
|
131
PUT
Morgan Stanley
MS
$340B
| $136M | 0.08% |
1,081,200
+64,300
| +6% | +$7.92M |
|
132
CALL
CVS Health
CVS
$137B
| $134M | 0.08% |
2,987,000
+1,590,000
| +114% | +$89.2M |
|
133
PUT
Pfizer
PFE
$142B
| $134M | 0.07% |
5,042,000
-428,700
| -8% | -$11.6M |
|
134
CALL
Wells Fargo
WFC
$266B
| $134M | 0.07% |
1,902,600
-203,900
| -10% | -$13.9M |
|
135
CALL
Apollo Global Management
APO
$68.2B
| $131M | 0.07% |
795,700
+298,600
| +60% | +$47.3M |
|
136
PUT
ExxonMobil
XOM
$629B
| $127M | 0.07% |
1,347,100
+83,100
| +7% | +$9.72M |
|
|
137
CALL
Shopify
SHOP
$160B
| $125M | 0.07% |
1,175,100
-41,300
| -3% | -$4.02M |
|
138
PUT
Home Depot
HD
$332B
| $125M | 0.07% |
320,500
-73,600
| -19% | -$30.1M |
|
139
CALL
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$247M
| $123M | 0.07% |
3,982,300
+455,000
| +13% | +$13.7M |
|
140
PUT
Royal Caribbean
RCL
$77.2B
| $123M | 0.07% |
533,600
-118,400
| -18% | -$26.2M |
|
141
CALL
Nike
NKE
$63.7B
| $123M | 0.07% |
1,623,000
-84,900
| -5% | -$6.67M |
|
142
PUT
ASML
ASML
$692B
| $122M | 0.07% |
176,600
+21,100
| +14% | +$15.2M |
|
143
CALL
Starbucks
SBUX
$119B
| $121M | 0.07% |
1,322,500
-451,400
| -25% | -$43.7M |
|
144
CALL
Chipotle Mexican Grill
CMG
$42.5B
| $121M | 0.07% |
1,999,700
-157,000
| -7% | -$9.46M |
|
145
CALL
Target
TGT
$63.4B
| $120M | 0.07% |
889,500
+353,200
| +66% | +$50.6M |
|
146
PUT
ARK Space & Defense Innovation ETF
ARKX
$823M
| $118M | 0.07% |
2,291,200
+843,400
| +58% | +$15.2M |
|
147
PUT
Carvana
CVNA
$47B
| $116M | 0.07% |
2,855,500
-299,500
| -9% | -$13.5M |
|
148
PUT
Constellation Energy
CEG
$93.6B
| $114M | 0.06% |
511,000
+122,000
| +31% | +$30.4M |
|
149
CALL
Dell
DELL
$261B
| $113M | 0.06% |
979,800
-47,300
| -5% | -$5.94M |
|
150
PUT
Robinhood
HOOD
$95.5B
| $113M | 0.06% |
3,020,000
+504,100
| +20% | +$16.3M |
|
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.