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 | |
|---|---|---|---|---|---|---|
1226
PUT
Calumet Specialty Products
CLMT
$3.65B
| $7.11M | ﹤0.01% |
322,700
-45,900
| -12% | -$965K |
|
1227
PUT
Shift4
FOUR
$3.8B
| $7.1M | ﹤0.01% |
68,400
-8,900
| -12% | -$884K |
|
1228
CALL
Texas Pacific Land
TPL
$29.1B
| $7.08M | ﹤0.01% |
19,200
+18,600
| +3,100% | +$7.6M |
|
1229
CALL
PureCycle Technologies
PCT
$1.2B
| $7.07M | ﹤0.01% |
690,000
-75,700
| -10% | -$878K |
|
1230
CALL
Sherwin-Williams
SHW
$78.3B
| $7.07M | ﹤0.01% |
20,800
-3,300
| -14% | -$1.23M |
|
1231
CALL
Lucid Motors
LCID
$2.42B
| $7.07M | ﹤0.01% |
234,080
-45,230
| -16% | -$1.18M |
|
1232
CALL
MACOM Technology Solutions
MTSI
$20.6B
| $7.07M | ﹤0.01% |
54,400
+1,200
| +2% | +$151K |
|
1233
PUT
Zions Bancorporation
ZION
$10.1B
| $7.06M | ﹤0.01% |
130,200
-17,500
| -12% | -$959K |
|
1234
iShares MSCI Brazil ETF
EWZ
$9.08B
| $7.06M | ﹤0.01% |
313,699
-75,446
| -19% | -$2.02M |
|
1235
PUT
SentinelOne
S
$6.2B
| $7.06M | ﹤0.01% |
318,100
-12,200
| -4% | -$311K |
|
1236
CALL
Joby Aviation
JOBY
$7.04B
| $6.99M | ﹤0.01% |
860,200
+122,100
| +17% | +$810K |
|
1237
CALL
Simon Property Group
SPG
$74.2B
| $6.99M | ﹤0.01% |
40,600
-38,900
| -49% | -$6.83M |
|
1238
PUT
Wolfspeed
WOLF
$1.21B
| $6.97M | ﹤0.01% |
1,046,600
-114,700
| -10% | -$1.17M |
|
1239
CALL
ProShares Ultra S&P500
SSO
$7.88B
| $6.96M | ﹤0.01% |
166,800
+36,000
| +28% | +$1.7M |
|
|
QLTB
1240
PUT
DELISTED
ISHARES BAA BA RATED CORP BOND FUND
QLTB
| $6.96M | ﹤0.01% |
35,200
+29,400
| +507% | +$5.81M |
|
1241
PUT
Galicia Financial Group
GGAL
$8.16B
| $6.95M | ﹤0.01% |
111,600
+19,000
| +21% | +$1.05M |
|
1242
NextEra Energy
NEE
$186B
| $6.95M | ﹤0.01% |
96,980
+29,777
| +44% | +$2.31M |
|
1243
PUT
Freshpet
FRPT
$2.83B
| $6.95M | ﹤0.01% |
46,900
-8,300
| -15% | -$1.21M |
|
1244
iShares MSCI Emerging Markets ETF
EEM
$28.2B
| $6.93M | ﹤0.01% |
165,847
+131,802
| +387% | +$5.84M |
|
1245
PUT
Nasdaq
NDAQ
$52.4B
| $6.93M | ﹤0.01% |
89,600
-14,700
| -14% | -$1.14M |
|
1246
CALL
Canadian Imperial Bank of Commerce
CM
$107B
| $6.92M | ﹤0.01% |
109,400
-71,100
| -39% | -$4.52M |
|
1247
CALL
Zeta Global
ZETA
$4.84B
| $6.92M | ﹤0.01% |
384,400
+251,100
| +188% | +$6.34M |
|
1248
PUT
WIX.com
WIX
$2.16B
| $6.91M | ﹤0.01% |
32,200
+200
| +0.6% | +$38.2K |
|
1249
CALL
Air Products & Chemicals
APD
$66B
| $6.9M | ﹤0.01% |
23,800
+3,200
| +16% | +$1M |
|
1250
PUT
Procore
PCOR
$6.43B
| $6.9M | ﹤0.01% |
92,100
+24,100
| +35% | +$1.71M |
|
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.