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 | |
|---|---|---|---|---|---|---|
2226
CALL
Goodyear
GT
$2.07B
| $1.92M | ﹤0.01% |
213,300
+50,900
| +31% | +$465K |
|
2227
PUT
uniQure
QURE
$2.68B
| $1.92M | ﹤0.01% |
108,600
+104,400
| +2,486% | +$901K |
|
2228
PUT
CareTrust REIT
CTRE
$10.2B
| $1.92M | ﹤0.01% |
70,800
+70,300
| +14,060% | +$2.1M |
|
2229
PUT
Brown-Forman Class B
BF.B
$12B
| $1.91M | ﹤0.01% |
50,400
+46,900
| +1,340% | +$2.06M |
|
2230
PUT
PTC
PTC
$13.7B
| $1.91M | ﹤0.01% |
10,400
+8,300
| +395% | +$1.57M |
|
2231
Western Alliance Bancorporation
WAL
$9.07B
| $1.91M | ﹤0.01% |
+22,880
| New | +$2.01M |
|
|
NVMI
2232
CALL
Nova
NVMI
$13.9B
| $1.91M | ﹤0.01% |
9,700
-1,300
| -12% | -$250K |
|
2233
CALL
indie Semiconductor
INDI
$733M
| $1.91M | ﹤0.01% |
471,500
+325,400
| +223% | +$1.34M |
|
2234
PUT
Fidelity National Information Services
FIS
$21.5B
| $1.91M | ﹤0.01% |
23,600
-11,100
| -32% | -$956K |
|
2235
Viatris
VTRS
$20.1B
| $1.91M | ﹤0.01% |
153,039
-46,671
| -23% | -$574K |
|
2236
PUT
American Water Works
AWK
$26.3B
| $1.9M | ﹤0.01% |
15,300
+4,700
| +44% | +$634K |
|
2237
CALL
Brookfield Renewable
BEPC
$6.12B
| $1.9M | ﹤0.01% |
68,800
+50,300
| +272% | +$1.55M |
|
2238
Simon Property Group
SPG
$74.5B
| $1.9M | ﹤0.01% |
+11,052
| New | +$1.94M |
|
2239
CALL
New Oriental
EDU
$7.84B
| $1.9M | ﹤0.01% |
29,600
-12,000
| -29% | -$769K |
|
2240
Enovix
ENVX
$862M
| $1.9M | ﹤0.01% |
199,661
+195,869
| +5,165% | +$1.72M |
|
2241
PUT
Navios Maritime Partners
NMM
$2.25B
| $1.9M | ﹤0.01% |
43,800
-39,800
| -48% | -$2.08M |
|
2242
PUT
Opendoor
OPEN
$3.69B
| $1.89M | ﹤0.01% |
1,221,607
+184,554
| +18% | +$334K |
|
2243
CALL
Under Armour Class C
UA
$2.92B
| $1.89M | ﹤0.01% |
250,400
-94,100
| -27% | -$785K |
|
2244
PUT
EVgo
EVGO
$200M
| $1.89M | ﹤0.01% |
466,300
+171,700
| +58% | +$1.09M |
|
2245
Hecla Mining
HL
$10.2B
| $1.89M | ﹤0.01% |
384,284
+66,046
| +21% | +$395K |
|
|
MESO
2246
CALL
Mesoblast
MESO
$1.99B
| $1.89M | ﹤0.01% |
95,300
-5,700
| -6% | -$63.1K |
|
2247
PUT
Boot Barn
BOOT
$4.55B
| $1.88M | ﹤0.01% |
12,400
-31,100
| -71% | -$4.59M |
|
2248
PUT
Service Corp International
SCI
$11.4B
| $1.88M | ﹤0.01% |
23,500
+1,200
| +5% | +$98.2K |
|
2249
PUT
DTE Energy
DTE
$31.1B
| $1.87M | ﹤0.01% |
15,500
+14,300
| +1,192% | +$1.76M |
|
|
2250
PUT
Under Armour Class C
UA
$2.92B
| $1.87M | ﹤0.01% |
226,300
+88,000
| +64% | +$734K |
|
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.