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 | |
|---|---|---|---|---|---|---|
5901
CALL
Dakota Gold
DC
$608M
| $48K | ﹤0.01% |
22,200
-3,500
| -14% | -$7.89K |
|
5902
New Oriental
EDU
$9.37B
| $48K | ﹤0.01% |
+753
| New | +$48.3K |
|
5903
CALL
Fulgent Genetics
FLGT
$470M
| $48K | ﹤0.01% |
2,600
-4,300
| -62% | -$84K |
|
5904
CALL
First Trust Value Line Dividend Fund
FVD
$8.32B
| $48K | ﹤0.01% |
+1,100
| New | +$49.8K |
|
5905
CALL
Gladstone Capital
GLAD
$422M
| $48K | ﹤0.01% |
1,700
-1,400
| -45% | -$36.3K |
|
|
MVO
5906
DELISTED
MV Oil Trust
MVO
| $48K | ﹤0.01% |
5,992
+4,889
| +443% | +$43.5K |
|
5907
CALL
MaxCyte
MXCT
$112M
| $48K | ﹤0.01% |
+11,700
| New | +$44.2K |
|
5908
PUT
Reynolds Consumer Products
REYN
$5.26B
| $48K | ﹤0.01% |
1,800
+1,600
| +800% | +$45.4K |
|
5909
The RMR Group
RMR
$325M
| $48K | ﹤0.01% |
2,329
+1,971
| +551% | +$45.6K |
|
|
SKE
5910
CALL
Skeena Resources
SKE
$3.3B
| $48K | ﹤0.01% |
5,600
-9,100
| -62% | -$82.8K |
|
5911
-1x Short VIX Futures ETF
SVIX
$174M
| $48K | ﹤0.01% |
1,925
-13,655
| -88% | -$362K |
|
5912
Thor Industries
THO
$3.9B
| $48K | ﹤0.01% |
+505
| New | +$53.9K |
|
|
YRD
5913
CALL
Yiren Digital
YRD
$97.1M
| $48K | ﹤0.01% |
10,200
+9,500
| +1,357% | +$53K |
|
|
AIFU
5914
AIFU Inc
AIFU
$206M
| $48K | ﹤0.01% |
110
+17
| +18% | +$9.08K |
|
|
TBCH
5915
CALL
Turtle Beach Corp
TBCH
$243M
| $48K | ﹤0.01% |
14,200
-14,300
| -50% | -$234K |
|
|
CDMO
5916
CALL
DELISTED
Avid Bioservices, Inc. Common Stock
CDMO
| $48K | ﹤0.01% |
3,900
-9,500
| -71% | -$109K |
|
5917
CALL
Aaon
AAON
$7.3B
| $47K | ﹤0.01% |
400
+300
| +300% | +$36.8K |
|
5918
PUT
Ardagh Metal Packaging
AMBP
$2.83B
| $47K | ﹤0.01% |
15,900
+14,700
| +1,225% | +$52.9K |
|
5919
PUT
Atlanta Braves Holdings Series B
BATRK
$3.26B
| $47K | ﹤0.01% |
1,200
+600
| +100% | +$23.9K |
|
|
CEPU
5920
Central Puerto
CEPU
$2.29B
| $47K | ﹤0.01% |
3,261
+1,940
| +147% | +$24.2K |
|
5921
PUT
Traeger
COOK
$178M
| $47K | ﹤0.01% |
394
+344
| +688% | +$52.8K |
|
5922
ProShares Ultra Dow30
DDM
$542M
| $47K | ﹤0.01% |
1,002
-404
| -29% | -$20.1K |
|
5923
CALL
ESAB
ESAB
$5.38B
| $47K | ﹤0.01% |
400
+200
| +100% | +$24.2K |
|
5924
PUT
Genco Shipping & Trading
GNK
$1.11B
| $47K | ﹤0.01% |
3,400
-10,200
| -75% | -$166K |
|
|
HES
5925
DELISTED
Hess
HES
| $47K | ﹤0.01% |
354
-10,480
| -97% | -$1.46M |
|
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.