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 | |
|---|---|---|---|---|---|---|
3476
PUT
Commercial Metals
CMC
$7.53B
| $530K | ﹤0.01% |
10,700
-62,100
| -85% | -$3.5M |
|
3477
Alpha Metallurgical Resources
AMR
$1.85B
| $529K | ﹤0.01% |
+2,646
| New | +$592K |
|
3478
Bausch Health
BHC
$1.67B
| $529K | ﹤0.01% |
65,657
-132,937
| -67% | -$1.1M |
|
3479
CALL
United States Antimony
UAMY
$808M
| $529K | ﹤0.01% |
+299,100
| New | +$300K |
|
3480
PUT
United Therapeutics
UTHR
$26.3B
| $529K | ﹤0.01% |
1,500
-5,900
| -80% | -$2.17M |
|
3481
CALL
Universal Technical Institute
UTI
$2.12B
| $529K | ﹤0.01% |
20,600
+17,800
| +636% | +$370K |
|
3482
PUT
Marriott Vacations Worldwide
VAC
$3.4B
| $529K | ﹤0.01% |
5,900
-10,000
| -63% | -$866K |
|
3483
CALL
Candel Therapeutics
CADL
$730M
| $527K | ﹤0.01% |
60,800
+59,000
| +3,278% | +$349K |
|
3484
Quantum Computing Inc
QUBT
$1.8B
| $526K | ﹤0.01% |
31,808
+18,204
| +134% | +$100K |
|
3485
CALL
Jasper Therapeutics
JSPR
$23.1M
| $525K | ﹤0.01% |
24,600
+24,000
| +4,000% | +$500K |
|
3486
PUT
QuidelOrtho
QDEL
$1.15B
| $525K | ﹤0.01% |
11,800
+10,200
| +638% | +$417K |
|
|
SILV
3487
PUT
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $525K | ﹤0.01% |
57,700
-12,500
| -18% | -$127K |
|
3488
Ambarella
AMBA
$2.99B
| $524K | ﹤0.01% |
7,206
-2,805
| -28% | -$179K |
|
3489
Brookfield Renewable
BEPC
$5.95B
| $524K | ﹤0.01% |
18,964
+13,105
| +224% | +$403K |
|
3490
CALL
Chord Energy
CHRD
$7.42B
| $524K | ﹤0.01% |
19,800
+3,100
| +19% | +$390K |
|
3491
PUT
Performance Food Group
PFGC
$18B
| $524K | ﹤0.01% |
6,200
+4,400
| +244% | +$371K |
|
|
SII
3492
Sprott
SII
$2.7B
| $524K | ﹤0.01% |
+12,433
| New | +$548K |
|
3493
CALL
GrafTech
EAF
$203M
| $523K | ﹤0.01% |
30,270
+25,490
| +533% | +$475K |
|
3494
American Superconductor
AMSC
$1.48B
| $522K | ﹤0.01% |
21,212
-2,983
| -12% | -$82.3K |
|
3495
CALL
Columbia Banking Systems
COLB
$8.74B
| $521K | ﹤0.01% |
19,300
+7,800
| +68% | +$224K |
|
3496
Iovance Biotherapeutics
IOVA
$2.19B
| $521K | ﹤0.01% |
70,453
-85,119
| -55% | -$789K |
|
3497
Ryan Specialty Holdings
RYAN
$5.59B
| $521K | ﹤0.01% |
8,130
+262
| +3% | +$18.2K |
|
|
FITB
3498
Fifth Third Bancorp
FITB
$51.7B
| $519K | ﹤0.01% |
+12,290
| New | +$551K |
|
3499
PUT
Royal Bank of Canada
RY
$291B
| $518K | ﹤0.01% |
4,300
-9,700
| -69% | -$1.2M |
|
|
SII
3500
CALL
Sprott
SII
$2.7B
| $518K | ﹤0.01% |
12,300
-1,300
| -10% | -$57.3K |
|
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.