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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
PUT
Intercontinental Exchange
ICE
$81.8B
| $7.14M | ﹤0.01% |
52,200
-12,600
| -19% | -$1.69M |
|
|
SKX
1227
PUT
DELISTED
Skechers
SKX
| $7.08M | ﹤0.01% |
102,500
+71,300
| +229% | +$4.72M |
|
1228
CALL
Aspen Aerogels
ASPN
$389M
| $7.07M | ﹤0.01% |
296,300
+151,200
| +104% | +$3.55M |
|
1229
CALL
Monolithic Power Systems
MPWR
$65.4B
| $7.07M | ﹤0.01% |
8,600
-4,100
| -32% | -$2.96M |
|
1230
PUT
Quanta Services
PWR
$94.2B
| $7.06M | ﹤0.01% |
27,800
-63,100
| -69% | -$16.7M |
|
1231
CALL
British American Tobacco
BTI
$132B
| $7.06M | ﹤0.01% |
228,300
+29,000
| +15% | +$881K |
|
1232
CALL
Futu Holdings
FUTU
$13.9B
| $7.05M | ﹤0.01% |
107,500
-96,700
| -47% | -$6.54M |
|
1233
CALL
KB Home
KBH
$3.48B
| $7.03M | ﹤0.01% |
100,100
-37,200
| -27% | -$2.53M |
|
1234
CALL
Dutch Bros
BROS
$8.8B
| $7M | ﹤0.01% |
169,200
+96,700
| +133% | +$3.32M |
|
|
FITB
1235
CALL
Fifth Third Bancorp
FITB
$52.1B
| $6.96M | ﹤0.01% |
190,800
-94,200
| -33% | -$3.44M |
|
1236
PUT
Southern Company
SO
$109B
| $6.94M | ﹤0.01% |
89,500
+12,300
| +16% | +$932K |
|
1237
PUT
Sweetgreen
SG
$720M
| $6.93M | ﹤0.01% |
229,800
+146,000
| +174% | +$4M |
|
|
1238
CALL
Sweetgreen
SG
$720M
| $6.92M | ﹤0.01% |
229,600
+78,500
| +52% | +$2.15M |
|
1239
PUT
Hartford Financial Services
HIG
$38.5B
| $6.92M | ﹤0.01% |
68,800
+45,300
| +193% | +$4.55M |
|
1240
PUT
TE Connectivity
TEL
$58.4B
| $6.9M | ﹤0.01% |
45,900
+13,900
| +43% | +$2.04M |
|
1241
PUT
Nutanix
NTNX
$14.7B
| $6.9M | ﹤0.01% |
121,400
-8,000
| -6% | -$491K |
|
1242
PUT
Freshpet
FRPT
$2.83B
| $6.88M | ﹤0.01% |
53,200
-16,400
| -24% | -$1.97M |
|
1243
PUT
Huntington Bancshares
HBAN
$35B
| $6.85M | ﹤0.01% |
519,900
+182,600
| +54% | +$2.46M |
|
1244
PUT
Samsara
IOT
$19.2B
| $6.84M | ﹤0.01% |
202,900
-70,400
| -26% | -$2.43M |
|
1245
PUT
EPAM Systems
EPAM
$4.75B
| $6.83M | ﹤0.01% |
36,300
+27,900
| +332% | +$5.95M |
|
1246
CALL
SAP
SAP
$188B
| $6.82M | ﹤0.01% |
33,800
-16,400
| -33% | -$3.1M |
|
1247
PUT
Scotiabank
BNS
$106B
| $6.81M | ﹤0.01% |
149,000
+21,100
| +16% | +$1,000K |
|
1248
iShares US Real Estate ETF
IYR
$4.59B
| $6.79M | ﹤0.01% |
77,379
+35,783
| +86% | +$3.07M |
|
1249
iShares MSCI China ETF
MCHI
$6.04B
| $6.78M | ﹤0.01% |
160,815
+106,280
| +195% | +$4.57M |
|
1250
CALL
Avis
CAR
$5.62B
| $6.77M | ﹤0.01% |
64,800
+7,500
| +13% | +$841K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.