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 | |
|---|---|---|---|---|---|---|
3151
CALL
Jackson Financial
JXN
$8.46B
| $740K | ﹤0.01% |
8,500
+3,000
| +55% | +$293K |
|
3152
CALL
Concentrix
CNXC
$1.52B
| $739K | ﹤0.01% |
17,100
+9,300
| +119% | +$414K |
|
|
HIMX
3153
Himax Technologies
HIMX
$2.21B
| $738K | ﹤0.01% |
91,812
+15,747
| +21% | +$99.3K |
|
3154
PUT
Birkenstock
BIRK
$7.62B
| $736K | ﹤0.01% |
13,000
-10,600
| -45% | -$538K |
|
3155
CALL
Eversource Energy
ES
$28.1B
| $735K | ﹤0.01% |
12,800
+4,200
| +49% | +$262K |
|
|
SUPV
3156
PUT
Grupo Supervielle
SUPV
$854M
| $734K | ﹤0.01% |
48,600
+8,900
| +22% | +$95K |
|
3157
CALL
Zebra Technologies
ZBRA
$12.6B
| $733K | ﹤0.01% |
1,900
-3,800
| -67% | -$1.47M |
|
3158
CALL
Evolent Health
EVH
$439M
| $732K | ﹤0.01% |
65,100
-148,200
| -69% | -$2.6M |
|
|
ITCI
3159
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $731K | ﹤0.01% |
8,760
+5,540
| +172% | +$455K |
|
3160
CALL
AllianceBernstein
AB
$3.54B
| $730K | ﹤0.01% |
19,700
-24,000
| -55% | -$875K |
|
3161
CALL
Levi Strauss
LEVI
$9.78B
| $730K | ﹤0.01% |
42,200
-35,700
| -46% | -$632K |
|
|
TPC
3162
PUT
Tutor Perini Cor
TPC
$4.48B
| $730K | ﹤0.01% |
30,200
+22,500
| +292% | +$611K |
|
3163
CALL
Arch Capital
ACGL
$36.3B
| $729K | ﹤0.01% |
7,900
-1,700
| -18% | -$172K |
|
3164
Norfolk Southern
NSC
$77B
| $729K | ﹤0.01% |
3,108
-1,768
| -36% | -$450K |
|
|
RVPH
3165
CALL
DELISTED
REVIVA PHARMA HLDGS INC
RVPH
| $729K | ﹤0.01% |
20,165
+14,195
| +238% | +$395K |
|
3166
Ardmore Shipping
ASC
$673M
| $728K | ﹤0.01% |
+59,939
| New | +$815K |
|
3167
CALL
Humacyte
HUMA
$180M
| $728K | ﹤0.01% |
144,200
+113,300
| +367% | +$561K |
|
3168
CALL
PubMatic
PUBM
$594M
| $728K | ﹤0.01% |
49,600
+1,200
| +2% | +$18.6K |
|
3169
Genworth Financial
GNW
$3.8B
| $725K | ﹤0.01% |
+103,834
| New | +$745K |
|
3170
PUT
Equity Residential
EQR
$25.3B
| $724K | ﹤0.01% |
10,100
-1,600
| -14% | -$118K |
|
3171
Photronics
PLAB
$1.76B
| $724K | ﹤0.01% |
+30,738
| New | +$752K |
|
|
GOGL
3172
PUT
DELISTED
Golden Ocean Group
GOGL
| $723K | ﹤0.01% |
80,800
+60,100
| +290% | +$647K |
|
|
GRNY
3173
FundStrat Granny Shots US Large Cap ETF
GRNY
$4.3B
| $722K | ﹤0.01% |
+36,196
| New | +$744K |
|
3174
PUT
Black Stone Minerals
BSM
$3.16B
| $721K | ﹤0.01% |
49,400
-3,800
| -7% | -$56.6K |
|
3175
CALL
First Horizon
FHN
$12.1B
| $721K | ﹤0.01% |
35,800
-40,900
| -53% | -$769K |
|
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.