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 | |
|---|---|---|---|---|---|---|
1926
PUT
Viatris
VTRS
$20.1B
| $2.77M | ﹤0.01% |
222,500
-7,600
| -3% | -$93.4K |
|
1927
CALL
CDW
CDW
$17.1B
| $2.77M | ﹤0.01% |
15,900
-1,200
| -7% | -$233K |
|
1928
PUT
2x Long VIX Futures ETF
UVIX
$286M
| $2.76M | ﹤0.01% |
2,660
-422
| -14% | -$359K |
|
1929
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $2.75M | ﹤0.01% |
30,900
+4,400
| +17% | +$278K |
|
1930
CALL
Clover Health Investments
CLOV
$2.28B
| $2.74M | ﹤0.01% |
871,200
-3,400
| -0.4% | -$12.2K |
|
1931
CALL
Insulet
PODD
$11.3B
| $2.74M | ﹤0.01% |
10,500
-6,500
| -38% | -$1.64M |
|
1932
CALL
Nano X Imaging
NNOX
$62.4M
| $2.74M | ﹤0.01% |
380,500
+142,200
| +60% | +$910K |
|
1933
PUT
Parker-Hannifin
PH
$125B
| $2.73M | ﹤0.01% |
4,300
-7,600
| -64% | -$5.03M |
|
1934
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $2.73M | ﹤0.01% |
41,200
-3,400
| -8% | -$269K |
|
1935
PUT
Dycom Industries
DY
$12.9B
| $2.73M | ﹤0.01% |
15,700
+15,200
| +3,040% | +$2.81M |
|
1936
Dutch Bros
BROS
$8.78B
| $2.72M | ﹤0.01% |
51,950
+34,425
| +196% | +$1.52M |
|
1937
CALL
Xponential Fitness
XPOF
$265M
| $2.72M | ﹤0.01% |
202,000
-12,100
| -6% | -$166K |
|
1938
PUT
Copart
CPRT
$25.9B
| $2.71M | ﹤0.01% |
47,300
-17,500
| -27% | -$997K |
|
1939
CALL
Tidewater
TDW
$3.91B
| $2.71M | ﹤0.01% |
49,600
+16,300
| +49% | +$928K |
|
|
ALTM
1940
CALL
DELISTED
Arcadium Lithium plc
ALTM
| $2.71M | ﹤0.01% |
527,900
+3,100
| +0.6% | +$15.8K |
|
1941
PUT
Yeti Holdings
YETI
$3.82B
| $2.71M | ﹤0.01% |
70,300
+15,400
| +28% | +$612K |
|
1942
Goodyear
GT
$2.07B
| $2.71M | ﹤0.01% |
300,691
+199,794
| +198% | +$1.83M |
|
|
MAG
1943
CALL
DELISTED
MAG Silver
MAG
| $2.7M | ﹤0.01% |
198,700
-71,700
| -27% | -$1.11M |
|
1944
PUT
Frontline
FRO
$8.75B
| $2.7M | ﹤0.01% |
190,100
+156,500
| +466% | +$2.93M |
|
1945
PUT
Groupon
GRPN
$980M
| $2.69M | ﹤0.01% |
221,500
-276,900
| -56% | -$2.9M |
|
1946
PUT
Hertz
HTZ
$572M
| $2.69M | ﹤0.01% |
735,000
+164,300
| +29% | +$594K |
|
|
TIGR
1947
UP Fintech Holding
TIGR
$845M
| $2.69M | ﹤0.01% |
416,235
+145,450
| +54% | +$1M |
|
1948
PUT
EPR Properties
EPR
$4.86B
| $2.69M | ﹤0.01% |
60,700
+400
| +0.7% | +$18.3K |
|
1949
PUT
Energy Fuels
UUUU
$2.82B
| $2.69M | ﹤0.01% |
523,600
+391,000
| +295% | +$2.42M |
|
1950
CALL
Vanguard Short-Term Treasury ETF
VGSH
$29.3B
| $2.68M | ﹤0.01% |
43,000
-29,800
| -41% | -$1.74M |
|
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.