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 | |
|---|---|---|---|---|---|---|
|
EXE
376
CALL
Expand Energy Corp
EXE
$22.3B
| $39.2M | 0.02% |
394,200
+234,400
| +147% | +$21.6M |
|
377
CALL
BP
BP
$112B
| $39.2M | 0.02% |
1,326,700
+556,000
| +72% | +$16.7M |
|
378
PUT
Enphase Energy
ENPH
$5.22B
| $39M | 0.02% |
568,500
+192,800
| +51% | +$15.3M |
|
379
CALL
Zillow
Z
$7.18B
| $39M | 0.02% |
527,400
-55,900
| -10% | -$4M |
|
380
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$422M
| $38.9M | 0.02% |
574,450
+480,900
| +514% | +$43.2M |
|
381
PUT
Cameco
CCJ
$39.4B
| $38.8M | 0.02% |
755,200
+37,200
| +5% | +$2.03M |
|
382
PUT
Union Pacific
UNP
$174B
| $38.5M | 0.02% |
169,000
-81,300
| -32% | -$19.2M |
|
383
CALL
Corning
GLW
$133B
| $38.5M | 0.02% |
809,400
+64,100
| +9% | +$3.04M |
|
384
CALL
Upstart Holdings
UPST
$2.74B
| $38.3M | 0.02% |
622,800
-59,400
| -9% | -$3.7M |
|
385
CALL
Constellation Energy
CEG
$98.2B
| $38.3M | 0.02% |
171,000
-125,200
| -42% | -$31.2M |
|
386
PUT
Deere & Co
DE
$164B
| $38.2M | 0.02% |
90,100
-12,200
| -12% | -$5.14M |
|
387
CALL
American Conservative Values ETF
ACVF
$150M
| $38M | 0.02% |
3,238,900
+3,062,000
| +1,731% | +$137M |
|
388
CALL
Akamai
AKAM
$18.1B
| $37.9M | 0.02% |
396,200
-1,500
| -0.4% | -$147K |
|
389
CALL
SoundHound AI
SOUN
$2.81B
| $37.6M | 0.02% |
1,895,100
+902,800
| +91% | +$8.7M |
|
|
B
390
PUT
Barrick Mining
B
$62.8B
| $37.4M | 0.02% |
2,412,300
+254,000
| +12% | +$4.62M |
|
391
CALL
GE Vernova
GEV
$265B
| $37.2M | 0.02% |
113,000
-67,100
| -37% | -$21M |
|
392
CALL
Rocket Lab Corp
RKLB
$43.6B
| $37M | 0.02% |
1,452,300
+900
| +0.1% | +$15.8K |
|
|
393
Uber
UBER
$143B
| $37M | 0.02% |
612,858
+601,521
| +5,306% | +$43M |
|
394
CALL
Moderna
MRNA
$23B
| $36.9M | 0.02% |
886,900
+200,200
| +29% | +$9.57M |
|
395
CALL
TKO Group
TKO
$13.6B
| $36.7M | 0.02% |
258,400
+69,800
| +37% | +$9.12M |
|
396
CALL
Hims & Hers Health
HIMS
$7.33B
| $36.6M | 0.02% |
1,515,300
+904,400
| +148% | +$22.4M |
|
397
PUT
Philip Morris
PM
$303B
| $36.5M | 0.02% |
303,600
+65,600
| +28% | +$8.28M |
|
398
PUT
Ford
F
$57.5B
| $36.5M | 0.02% |
3,690,300
-249,400
| -6% | -$2.66M |
|
399
CALL
Cadence Design Systems
CDNS
$93B
| $36.4M | 0.02% |
121,300
+16,200
| +15% | +$4.71M |
|
400
CALL
Medtronic
MDT
$105B
| $36.4M | 0.02% |
455,700
-62,800
| -12% | -$5.44M |
|
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.