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 | |
|---|---|---|---|---|---|---|
2926
East-West Bancorp
EWBC
$17.9B
| $916K | ﹤0.01% |
9,566
+5,298
| +124% | +$520K |
|
2927
PUT
FT Vest Gold Strategy Target Income ETF
IGLD
$507M
| $916K | ﹤0.01% |
3,900
-9,300
| -70% | -$193K |
|
2928
CALL
Eastman Chemical
EMN
$7.8B
| $913K | ﹤0.01% |
10,000
-6,000
| -38% | -$615K |
|
2929
Elevance Health
ELV
$81.9B
| $911K | ﹤0.01% |
+2,470
| New | +$1.03M |
|
|
GRRR
2930
CALL
Gorilla Technology Group
GRRR
$333M
| $910K | ﹤0.01% |
+50,400
| New | +$331K |
|
2931
Skywest
SKYW
$4.11B
| $910K | ﹤0.01% |
9,091
-507
| -5% | -$51.8K |
|
2932
CALL
Delek US
DK
$3.87B
| $908K | ﹤0.01% |
49,100
-10,500
| -18% | -$188K |
|
2933
PUT
Otis Worldwide
OTIS
$27.4B
| $907K | ﹤0.01% |
9,800
-27,100
| -73% | -$2.72M |
|
2934
CALL
RxSight
RXST
$215M
| $907K | ﹤0.01% |
26,400
-24,900
| -49% | -$1.12M |
|
2935
PUT
Vanguard Consumer Discretionary ETF
VCR
$5.84B
| $907K | ﹤0.01% |
1,500
-5,200
| -78% | -$1.88M |
|
2936
CALL
Cirrus Logic
CRUS
$6.74B
| $906K | ﹤0.01% |
9,100
-14,900
| -62% | -$1.64M |
|
2937
Hormel Foods
HRL
$13.9B
| $904K | ﹤0.01% |
28,827
-30,302
| -51% | -$950K |
|
2938
PUT
Rexford Industrial Realty
REXR
$8.7B
| $904K | ﹤0.01% |
23,400
+5,100
| +28% | +$219K |
|
2939
iShares 1-3 Year Treasury Bond ETF
SHY
$25.4B
| $904K | ﹤0.01% |
+11,033
| New | +$907K |
|
2940
PUT
Prospect Capital
PSEC
$1.06B
| $903K | ﹤0.01% |
209,700
+133,000
| +173% | +$638K |
|
2941
Navitas Semiconductor
NVTS
$2.66B
| $902K | ﹤0.01% |
252,757
+180,193
| +248% | +$501K |
|
2942
Arvinas
ARVN
$518M
| $899K | ﹤0.01% |
46,907
+38,923
| +488% | +$946K |
|
2943
Capricor Therapeutics
CAPR
$1.14B
| $899K | ﹤0.01% |
+65,210
| New | +$1.14M |
|
2944
CALL
Costamare
CMRE
$1.9B
| $899K | ﹤0.01% |
70,000
-21,900
| -24% | -$301K |
|
2945
PUT
Pitney Bowes
PBI
$2.42B
| $896K | ﹤0.01% |
123,800
-5,300
| -4% | -$39.4K |
|
2946
Brown-Forman Class B
BF.B
$12B
| $895K | ﹤0.01% |
+23,579
| New | +$1.04M |
|
|
NKLA
2947
CALL
DELISTED
Nikola Corporation Common Stock
NKLA
| $895K | ﹤0.01% |
752,400
-81,200
| -10% | -$232K |
|
2948
CALL
Primoris Services
PRIM
$4.69B
| $893K | ﹤0.01% |
11,700
+11,300
| +2,825% | +$825K |
|
2949
PUT
NewAmsterdam Pharma
NAMS
$3.47B
| $891K | ﹤0.01% |
+34,700
| New | +$737K |
|
2950
PUT
Coca-Cola Europacific Partners
CCEP
$46.5B
| $890K | ﹤0.01% |
11,600
+8,900
| +330% | +$687K |
|
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.