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 | |
|---|---|---|---|---|---|---|
101
CALL
Robinhood
HOOD
$95.5B
| $175M | 0.1% |
4,691,500
+2,135,300
| +84% | +$68.9M |
|
102
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $175M | 0.1% |
513,000
+34,100
| +7% | +$18.5M |
|
103
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $174M | 0.1% |
3,012,500
+555,400
| +23% | +$33.5M |
|
104
CALL
JD.com
JD
$41.1B
| $171M | 0.1% |
4,940,500
+245,000
| +5% | +$9.48M |
|
105
CALL
Pfizer
PFE
$142B
| $171M | 0.1% |
6,440,700
+1,349,800
| +27% | +$36.6M |
|
106
PUT
Walt Disney
DIS
$167B
| $169M | 0.09% |
1,515,700
+72,500
| +5% | +$7.62M |
|
107
CALL
Oracle
ORCL
$366B
| $168M | 0.09% |
1,006,700
-525,000
| -34% | -$93.3M |
|
108
PUT
iShares Silver Trust
SLV
$28.4B
| $167M | 0.09% |
6,333,200
+2,130,600
| +51% | +$60.9M |
|
|
109
PUT
Uber
UBER
$146B
| $165M | 0.09% |
2,738,300
+1,149,700
| +72% | +$82.1M |
|
110
CALL
United Airlines
UAL
$38.2B
| $156M | 0.09% |
1,611,300
+312,200
| +24% | +$26.4M |
|
111
PUT
Arm
ARM
$309B
| $156M | 0.09% |
1,265,700
-88,100
| -7% | -$12.4M |
|
112
CALL
Qualcomm
QCOM
$183B
| $156M | 0.09% |
1,013,700
+5,900
| +0.6% | +$966K |
|
113
CALL
Cisco
CSCO
$442B
| $154M | 0.09% |
2,600,700
+802,500
| +45% | +$45.8M |
|
114
PUT
Marvell Technology
MRVL
$187B
| $150M | 0.08% |
1,355,000
+412,500
| +44% | +$38.3M |
|
115
CALL
Chevron
CVX
$381B
| $150M | 0.08% |
1,033,000
+386,900
| +60% | +$59.2M |
|
116
CALL
Carvana
CVNA
$47B
| $148M | 0.08% |
3,636,500
-517,000
| -12% | -$23.2M |
|
117
CALL
Adobe
ADBE
$90.3B
| $147M | 0.08% |
330,400
+63,000
| +24% | +$31.2M |
|
|
118
PUT
Intel
INTC
$530B
| $146M | 0.08% |
7,258,000
+757,000
| +12% | +$17.1M |
|
119
CALL
Bank of America
BAC
$430B
| $145M | 0.08% |
3,303,200
-436,200
| -12% | -$19.2M |
|
120
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $144M | 0.08% |
4,652,400
+833,000
| +22% | +$77.7M |
|
|
121
PUT
Pinduoduo
PDD
$121B
| $144M | 0.08% |
1,485,100
-1,176,700
| -44% | -$137M |
|
122
CALL
Occidental Petroleum
OXY
$56.2B
| $144M | 0.08% |
2,913,800
+1,331,600
| +84% | +$67.3M |
|
|
123
PUT
Qualcomm
QCOM
$183B
| $144M | 0.08% |
935,200
-120,700
| -11% | -$19.8M |
|
124
CALL
Reddit
RDDT
$35.8B
| $143M | 0.08% |
877,200
+730,600
| +498% | +$90.2M |
|
125
PUT
Nike
NKE
$63.7B
| $143M | 0.08% |
1,890,100
+42,300
| +2% | +$3.32M |
|
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.