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 | |
|---|---|---|---|---|---|---|
1876
PUT
AutoNation
AN
$6.97B
| $2.9M | ﹤0.01% |
17,100
+1,900
| +13% | +$321K |
|
1877
CALL
Zimmer Biomet
ZBH
$17.7B
| $2.9M | ﹤0.01% |
27,500
+4,800
| +21% | +$515K |
|
1878
CALL
Canadian National Railway
CNI
$78.3B
| $2.9M | ﹤0.01% |
28,600
+28,300
| +9,433% | +$3.1M |
|
1879
CALL
Fox Class B
FOX
$20.7B
| $2.9M | ﹤0.01% |
59,800
+42,200
| +240% | +$1.78M |
|
1880
PUT
Velocity Financial
VEL
$683M
| $2.9M | ﹤0.01% |
148,400
+54,300
| +58% | +$1.08M |
|
1881
AES
AES
$10.6B
| $2.9M | ﹤0.01% |
+225,238
| New | +$3.36M |
|
1882
CALL
McCormick & Company Non-Voting
MKC
$13.4B
| $2.9M | ﹤0.01% |
38,000
-115,200
| -75% | -$9.05M |
|
1883
CALL
Vanguard FTSE Europe ETF
VGK
$30B
| $2.9M | ﹤0.01% |
39,300
-116,800
| -75% | -$7.8M |
|
1884
CALL
Kinross Gold
KGC
$28.5B
| $2.9M | ﹤0.01% |
312,400
-114,500
| -27% | -$1.13M |
|
1885
CALL
Kimbell Royalty Partners
KRP
$1.47B
| $2.89M | ﹤0.01% |
178,100
-147,400
| -45% | -$2.36M |
|
1886
Canadian Solar
CSIQ
$906M
| $2.89M | ﹤0.01% |
259,777
-230,097
| -47% | -$2.97M |
|
1887
CALL
Campbell Soup
CPB
$6.51B
| $2.88M | ﹤0.01% |
68,900
+700
| +1% | +$31.6K |
|
1888
PUT
Elanco Animal Health
ELAN
$12.4B
| $2.87M | ﹤0.01% |
237,200
-15,200
| -6% | -$199K |
|
1889
CALL
Booz Allen Hamilton
BAH
$8.7B
| $2.87M | ﹤0.01% |
22,300
+18,700
| +519% | +$2.9M |
|
1890
Brinker International
EAT
$8.02B
| $2.87M | ﹤0.01% |
+21,669
| New | +$2.44M |
|
|
EH
1891
EHang Holdings
EH
$372M
| $2.86M | ﹤0.01% |
181,859
+128,868
| +243% | +$2.07M |
|
1892
PUT
Fiverr
FVRR
$376M
| $2.86M | ﹤0.01% |
90,200
-68,600
| -43% | -$1.99M |
|
1893
Goldman Sachs
GS
$313B
| $2.86M | ﹤0.01% |
4,995
+1,353
| +37% | +$755K |
|
1894
PUT
Trupanion
TRUP
$1.05B
| $2.86M | ﹤0.01% |
59,300
+9,900
| +20% | +$508K |
|
1895
CALL
ICICI Bank
IBN
$106B
| $2.86M | ﹤0.01% |
95,700
-28,100
| -23% | -$848K |
|
1896
PUT
Jack in the Box
JACK
$278M
| $2.86M | ﹤0.01% |
68,600
+7,200
| +12% | +$332K |
|
1897
CALL
Cal-Maine
CALM
$4.28B
| $2.85M | ﹤0.01% |
27,700
+22,700
| +454% | +$2.14M |
|
1898
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $2.85M | ﹤0.01% |
29,800
-700
| -2% | -$69K |
|
1899
PUT
Regions Financial
RF
$26.3B
| $2.85M | ﹤0.01% |
121,100
-28,600
| -19% | -$707K |
|
|
GLDD
1900
CALL
DELISTED
Great Lakes Dredge & Dock
GLDD
| $2.85M | ﹤0.01% |
252,200
+212,300
| +532% | +$2.54M |
|
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.