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 | |
|---|---|---|---|---|---|---|
1176
PUT
Kenvue
KVUE
$36.8B
| $7.91M | ﹤0.01% |
370,500
+4,200
| +1% | +$95.2K |
|
1177
CALL
Tyson Foods
TSN
$20.1B
| $7.9M | ﹤0.01% |
137,500
+24,100
| +21% | +$1.46M |
|
1178
PUT
Amphenol
APH
$191B
| $7.89M | ﹤0.01% |
113,600
-211,900
| -65% | -$14.8M |
|
1179
PUT
Bunge Global
BG
$23.7B
| $7.86M | ﹤0.01% |
101,100
+35,400
| +54% | +$3.11M |
|
1180
CALL
D-Wave Quantum
QBTS
$6.13B
| $7.85M | ﹤0.01% |
935,100
+897,100
| +2,361% | +$2.68M |
|
1181
CALL
Copart
CPRT
$25.8B
| $7.85M | ﹤0.01% |
136,800
+69,000
| +102% | +$3.93M |
|
1182
CALL
Hasbro
HAS
$12.5B
| $7.81M | ﹤0.01% |
139,700
-22,400
| -14% | -$1.46M |
|
1183
PUT
Cummins
CMI
$91.8B
| $7.77M | ﹤0.01% |
22,300
+5,200
| +30% | +$1.83M |
|
|
CMA
1184
PUT
DELISTED
Comerica
CMA
| $7.76M | ﹤0.01% |
125,500
-124,200
| -50% | -$8.07M |
|
1185
Costco
COST
$413B
| $7.76M | ﹤0.01% |
8,469
+6,209
| +275% | +$5.76M |
|
|
AMTM
1186
PUT
Amentum Holdings
AMTM
$5.56B
| $7.75M | ﹤0.01% |
+368,700
| New | +$9.53M |
|
1187
PUT
Paycom
PAYC
$6.74B
| $7.73M | ﹤0.01% |
37,700
-16,200
| -30% | -$3.3M |
|
1188
CALL
Doximity
DOCS
$3.7B
| $7.72M | ﹤0.01% |
144,700
-60,900
| -30% | -$2.98M |
|
|
DENT
1189
CALL
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $7.72M | ﹤0.01% |
1,942,200
+590,000
| +44% | +$2.34M |
|
1190
CALL
Calumet Specialty Products
CLMT
$3.65B
| $7.71M | ﹤0.01% |
350,400
+153,400
| +78% | +$3.23M |
|
1191
CALL
NetEase
NTES
$76.9B
| $7.7M | ﹤0.01% |
86,300
+39,900
| +86% | +$3.5M |
|
1192
CALL
WIX.com
WIX
$2.16B
| $7.68M | ﹤0.01% |
35,800
-300
| -0.8% | -$57.3K |
|
1193
CALL
J.M. Smucker
SJM
$12.5B
| $7.65M | ﹤0.01% |
69,500
-77,600
| -53% | -$8.93M |
|
1194
PUT
NuScale Power
SMR
$2.88B
| $7.63M | ﹤0.01% |
425,400
+324,900
| +323% | +$6.7M |
|
1195
CALL
Sweetgreen
SG
$718M
| $7.61M | ﹤0.01% |
237,500
-93,300
| -28% | -$3.48M |
|
1196
PUT
BHP
BHP
$213B
| $7.61M | ﹤0.01% |
155,800
-51,400
| -25% | -$2.79M |
|
1197
CALL
Credo Technology Group
CRDO
$40.6B
| $7.59M | ﹤0.01% |
112,900
+54,100
| +92% | +$2.69M |
|
1198
PUT
Yum China
YUMC
$14.8B
| $7.58M | ﹤0.01% |
157,400
-8,200
| -5% | -$389K |
|
1199
PUT
ProShares Ultra S&P500
SSO
$7.87B
| $7.49M | ﹤0.01% |
178,400
-19,800
| -10% | -$932K |
|
1200
CALL
Qorvo
QRVO
$7.69B
| $7.47M | ﹤0.01% |
106,900
+58,200
| +120% | +$4.66M |
|
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.