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 | |
|---|---|---|---|---|---|---|
801
CALL
Albemarle
ALB
$13.7B
| $14.7M | 0.01% |
171,200
-45,600
| -21% | -$4.54M |
|
802
PUT
Medtronic
MDT
$105B
| $14.7M | 0.01% |
184,200
-23,200
| -11% | -$2.01M |
|
803
CALL
Phillips 66
PSX
$83.7B
| $14.7M | 0.01% |
140,800
+5,700
| +4% | +$725K |
|
804
PUT
Jabil
JBL
$33.6B
| $14.7M | 0.01% |
102,000
-43,900
| -30% | -$5.76M |
|
805
CALL
Cytokinetics
CYTK
$11.1B
| $14.7M | 0.01% |
311,900
+101,000
| +48% | +$5.25M |
|
806
PUT
Southern Company
SO
$109B
| $14.7M | 0.01% |
178,200
+53,500
| +43% | +$4.69M |
|
807
Adobe
ADBE
$84.6B
| $14.7M | 0.01% |
32,959
+26,143
| +384% | +$12.9M |
|
808
PUT
ZIM Integrated Shipping Services
ZIM
$3.07B
| $14.6M | 0.01% |
682,300
+261,200
| +62% | +$5.74M |
|
809
PUT
Kinder Morgan
KMI
$72.7B
| $14.6M | 0.01% |
534,400
+321,100
| +151% | +$8.37M |
|
810
PUT
MetLife
MET
$59.6B
| $14.6M | 0.01% |
178,700
-470,200
| -72% | -$39.1M |
|
811
CALL
Ciena
CIEN
$57.6B
| $14.6M | 0.01% |
171,900
-18,600
| -10% | -$1.33M |
|
812
CALL
CBRE Group
CBRE
$39.7B
| $14.5M | 0.01% |
110,600
+82,500
| +294% | +$10.8M |
|
813
CALL
Toronto Dominion Bank
TD
$197B
| $14.5M | 0.01% |
272,700
+80,900
| +42% | +$4.54M |
|
|
MPT
814
PUT
Medical Properties Trust
MPT
$2.87B
| $14.5M | 0.01% |
3,674,500
-870,300
| -19% | -$3.9M |
|
815
PUT
First Citizens BancShares
FCNCA
$25.5B
| $14.4M | 0.01% |
6,800
-800
| -11% | -$1.68M |
|
816
PUT
Skyworks Solutions
SWKS
$9.01B
| $14.4M | 0.01% |
161,900
+25,100
| +18% | +$2.28M |
|
817
PUT
Trip.com Group
TCOM
$27B
| $14.3M | 0.01% |
208,800
-108,900
| -34% | -$7.2M |
|
818
PUT
Duke Energy
DUK
$101B
| $14.3M | 0.01% |
132,900
-219,700
| -62% | -$24.9M |
|
819
CALL
CRH
CRH
$65.6B
| $14.2M | 0.01% |
153,800
+38,200
| +33% | +$3.68M |
|
820
CALL
Bitdeer Technologies
BTDR
$2.98B
| $14.2M | 0.01% |
655,900
+238,900
| +57% | +$3.04M |
|
821
PUT
Antero Resources
AR
$10.9B
| $14.2M | 0.01% |
405,500
+236,500
| +140% | +$7.16M |
|
822
PUT
American Electric Power
AEP
$73.3B
| $14.2M | 0.01% |
153,600
-97,500
| -39% | -$9.44M |
|
823
CALL
Dynatrace
DT
$11.8B
| $14.2M | 0.01% |
260,500
-99,500
| -28% | -$5.43M |
|
824
PUT
YPF
YPF
$20.6B
| $14.2M | 0.01% |
333,000
+115,500
| +53% | +$3.79M |
|
825
Celsius Holdings
CELH
$6.97B
| $14.1M | 0.01% |
537,094
+226,902
| +73% | +$6.73M |
|
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.