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 | |
|---|---|---|---|---|---|---|
3251
PUT
dLocal
DLO
$4.39B
| $667K | ﹤0.01% |
59,300
-18,400
| -24% | -$185K |
|
3252
CALL
Hudbay
HBM
$9.79B
| $667K | ﹤0.01% |
82,400
-29,700
| -26% | -$266K |
|
3253
CALL
La-Z-Boy
LZB
$1.61B
| $666K | ﹤0.01% |
15,300
+9,200
| +151% | +$389K |
|
3254
CALL
Prothena Corp
PRTA
$459M
| $666K | ﹤0.01% |
48,100
+27,800
| +137% | +$439K |
|
3255
CALL
Kanzhun
BZ
$6.99B
| $665K | ﹤0.01% |
48,200
+7,800
| +19% | +$115K |
|
3256
PUT
Global Water Resources
GWRS
$210M
| $664K | ﹤0.01% |
+57,800
| New | +$725K |
|
3257
GigaCloud Technology
GCT
$1.45B
| $662K | ﹤0.01% |
35,781
-2,420
| -6% | -$56K |
|
3258
PUT
Genesis Energy
GEL
$1.81B
| $662K | ﹤0.01% |
65,500
+4,500
| +7% | +$53.2K |
|
3259
CALL
Iridium Communications
IRDM
$4.84B
| $661K | ﹤0.01% |
22,800
+1,300
| +6% | +$38.7K |
|
|
FFAI
3260
Faraday Future Intelligent Electric
FFAI
$13.1M
| $661K | ﹤0.01% |
+1,815
| New | +$482K |
|
3261
BuzzFeed
BZFD
$94.1M
| $659K | ﹤0.01% |
246,883
+88,811
| +56% | +$279K |
|
3262
CALL
Rush Enterprises Class A
RUSHA
$5.99B
| $657K | ﹤0.01% |
12,000
+3,900
| +48% | +$223K |
|
3263
CALL
Talos Energy
TALO
$2.36B
| $656K | ﹤0.01% |
67,600
+53,700
| +386% | +$565K |
|
3264
PUT
Banco Bradesco
BBD
$38.4B
| $655K | ﹤0.01% |
343,100
+222,800
| +185% | +$522K |
|
|
BORR
3265
Borr Drilling
BORR
$1.27B
| $654K | ﹤0.01% |
167,792
+87,135
| +108% | +$372K |
|
3266
PUT
Ardelyx
ARDX
$1.27B
| $653K | ﹤0.01% |
128,900
-82,600
| -39% | -$456K |
|
3267
CALL
Masco
MAS
$16.2B
| $653K | ﹤0.01% |
9,000
-11,100
| -55% | -$888K |
|
3268
PUT
Impinj
PI
$3.88B
| $653K | ﹤0.01% |
4,500
+2,400
| +114% | +$455K |
|
3269
PUT
BioCryst Pharmaceuticals
BCRX
$2.48B
| $652K | ﹤0.01% |
86,800
+23,100
| +36% | +$175K |
|
3270
PUT
GXO Logistics
GXO
$6.11B
| $652K | ﹤0.01% |
15,000
+13,700
| +1,054% | +$754K |
|
3271
CALL
Pinnacle West Capital
PNW
$12.8B
| $652K | ﹤0.01% |
7,700
+3,400
| +79% | +$302K |
|
3272
PUT
B2Gold
BTG
$5.13B
| $650K | ﹤0.01% |
266,400
+4,900
| +2% | +$14.4K |
|
3273
PUT
CONMED
CNMD
$1.3B
| $650K | ﹤0.01% |
9,500
+8,900
| +1,483% | +$620K |
|
|
NLOP
3274
CALL
Net Lease Office Properties
NLOP
$170M
| $649K | ﹤0.01% |
20,800
-6,200
| -23% | -$193K |
|
3275
PUT
Evolent Health
EVH
$441M
| $648K | ﹤0.01% |
57,600
-113,800
| -66% | -$2M |
|
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.